Merge https://github.com/MarlinFirmware/Marlin into tm3-utf-minus-kanji

Conflicts:
	Marlin/example_configurations/delta/generic/Configuration.h
	Marlin/example_configurations/delta/kossel_mini/Configuration.h
	Marlin/language.h

Conflicts solved

Documentation/changelog.md

+### Version 1.0.3
+* Reduced code size, maybe a lot depending on your configuration.
+* Improved support for Delta, SCARA, and COREXY kinematics.
+* Move parts of Configuration files to `Conditionals.h` and `SanityCheck.h`.
+* Clean up of temperature code.
+* Enhanced `G29` with improved grid bed leveling based on Roxy code. See documentation.
+* Various bugs fixed from 1.0.2.
+* EEPROM layout updated to `V17`.
+* Added `M204` travel acceleration options.
+* `M204` "`P`" parameter replaces "`S`." "`S`" retained for backward compatibility.
+* Support for more RAMPS-based boards.
+* Configurator utility under development.
+* `M404` "`N`" parameter replaced with "`W`." ("`N`" is for line numbers only).
+* Much cleanup of the code.
+* Improved support for Cyrillic and accented languages.
+* LCD controller knob acceleration.
+* Improved compatibility with various sensors, MAX6675 thermocouple.
+* Filament runout sensor support.
+* Filament width measurement support.
+* Support for TMC and L6470 stepper drivers.
+* Better support of G-Code `;` comments, `\`, `N` line numbers, and `*` checksums.
+* Moved GCode handling code into individual functions per-code.
 
+### Version 1.0.2
+* Progress bar for character-based LCD displays.
+
+### Version 1.0.1
+
+### Version 1.0.0
+* Initial release

Marlin/Conditionals.h

+/**
+ * Conditionals.h
+ * Defines that depend on configuration but are not editable.
+ */
+#ifndef CONDITIONALS_H
+
+#ifndef CONFIGURATION_LCD // Get the LCD defines which are needed first
+
+  #define CONFIGURATION_LCD
+
+  #if defined(MAKRPANEL)
+    #define DOGLCD
+    #define SDSUPPORT
+    #define DEFAULT_LCD_CONTRAST 17
+    #define ULTIPANEL
+    #define NEWPANEL
+  #endif
+
+  #if defined(miniVIKI) || defined(VIKI2)
+    #define ULTRA_LCD  //general LCD support, also 16x2
+    #define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
+    #define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
+
+    #ifdef miniVIKI
+      #define DEFAULT_LCD_CONTRAST 95
+    #else
+      #define DEFAULT_LCD_CONTRAST 40
+    #endif
+
+    #define ENCODER_PULSES_PER_STEP 4
+    #define ENCODER_STEPS_PER_MENU_ITEM 1
+  #endif
+
+  #ifdef PANEL_ONE
+    #define SDSUPPORT
+    #define ULTIMAKERCONTROLLER
+  #endif
+
+  #ifdef REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER
+    #define DOGLCD
+    #define U8GLIB_ST7920
+    #define REPRAP_DISCOUNT_SMART_CONTROLLER
+  #endif
+
+  #if defined(ULTIMAKERCONTROLLER) || defined(REPRAP_DISCOUNT_SMART_CONTROLLER) || defined(G3D_PANEL)
+    #define ULTIPANEL
+    #define NEWPANEL
+  #endif
+
+  #ifdef REPRAPWORLD_KEYPAD
+    #define ULTIPANEL
+    #define NEWPANEL
+  #endif
+
+  #ifdef RA_CONTROL_PANEL
+    #define LCD_I2C_TYPE_PCA8574
+    #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
+    #define ULTIPANEL
+    #define NEWPANEL
+  #endif
+
+  /**
+   * I2C PANELS
+   */
+
+  #ifdef LCD_I2C_SAINSMART_YWROBOT
+    // This uses the LiquidCrystal_I2C library ( https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home )
+    // Make sure it is placed in the Arduino libraries directory.
+    #define LCD_I2C_TYPE_PCF8575
+    #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
+    #define ULTIPANEL
+    #define NEWPANEL
+  #endif
+
+  // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+  #ifdef LCD_I2C_PANELOLU2
+    // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+    // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+    // (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
+    // Note: The PANELOLU2 encoder click input can either be directly connected to a pin
+    //       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
+    #define LCD_I2C_TYPE_MCP23017
+    #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
+    #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
+
+    #ifndef ENCODER_PULSES_PER_STEP
+      #define ENCODER_PULSES_PER_STEP 4
+    #endif
+
+    #ifndef ENCODER_STEPS_PER_MENU_ITEM
+      #define ENCODER_STEPS_PER_MENU_ITEM 1
+    #endif
+
+    #ifdef LCD_USE_I2C_BUZZER
+      #define LCD_FEEDBACK_FREQUENCY_HZ 1000
+      #define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100
+    #endif
+
+    #define ULTIPANEL
+    #define NEWPANEL
+  #endif
+
+  // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
+  #ifdef LCD_I2C_VIKI
+    // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
+    // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
+    // Note: The pause/stop/resume LCD button pin should be connected to the Arduino
+    //       BTN_ENC pin (or set BTN_ENC to -1 if not used)
+    #define LCD_I2C_TYPE_MCP23017
+    #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
+    #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD (requires LiquidTWI2 v1.2.3 or later)
+    #define ULTIPANEL
+    #define NEWPANEL
+  #endif
+
+  // Shift register panels
+  // ---------------------
+  // 2 wire Non-latching LCD SR from:
+  // https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection
+
+  #ifdef SAV_3DLCD
+     #define SR_LCD_2W_NL    // Non latching 2 wire shiftregister
+     #define ULTIPANEL
+     #define NEWPANEL
+  #endif
+
+
+  #ifdef ULTIPANEL
+    #define NEWPANEL  //enable this if you have a click-encoder panel
+    #define SDSUPPORT
+    #define ULTRA_LCD
+    #ifdef DOGLCD // Change number of lines to match the DOG graphic display
+      #define LCD_WIDTH 22
+      #define LCD_HEIGHT 5
+    #else
+      #define LCD_WIDTH 20
+      #define LCD_HEIGHT 4
+    #endif
+  #else //no panel but just LCD
+    #ifdef ULTRA_LCD
+    #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
+      #define LCD_WIDTH 22
+      #define LCD_HEIGHT 5
+    #else
+      #define LCD_WIDTH 16
+      #define LCD_HEIGHT 2
+    #endif
+    #endif
+  #endif
+
+  /**
+   * Default LCD contrast for dogm-like LCD displays
+   */
+  #if defined(DOGLCD) && !defined(DEFAULT_LCD_CONTRAST)
+    #define DEFAULT_LCD_CONTRAST 32
+  #endif
+
+#else // CONFIGURATION_LCD
+
+  #define CONDITIONALS_H
+
+  #ifndef AT90USB
+    #define HardwareSerial_h // trick to disable the standard HWserial
+  #endif
+
+  #if (ARDUINO >= 100)
+    #include "Arduino.h"
+  #else
+    #include "WProgram.h"
+  #endif
+
+  #include "pins.h"
+
+  /**
+   * ENDSTOPPULLUPS
+   */
+  #ifdef ENDSTOPPULLUPS
+    #ifndef DISABLE_MAX_ENDSTOPS
+      #define ENDSTOPPULLUP_XMAX
+      #define ENDSTOPPULLUP_YMAX
+      #define ENDSTOPPULLUP_ZMAX
+    #endif
+    #ifndef DISABLE_MIN_ENDSTOPS
+      #define ENDSTOPPULLUP_XMIN
+      #define ENDSTOPPULLUP_YMIN
+      #define ENDSTOPPULLUP_ZMIN
+    #endif
+  #endif
+
+  /**
+   * Axis lengths
+   */
+  #define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS)
+  #define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS)
+  #define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)
+
+  /**
+   * SCARA
+   */
+  #ifdef SCARA
+    #undef SLOWDOWN
+    #define QUICK_HOME //SCARA needs Quickhome
+  #endif
+
+  /**
+   * AUTOSET LOCATIONS OF LIMIT SWITCHES
+   * Added by ZetaPhoenix 09-15-2012
+   */
+  #ifdef MANUAL_HOME_POSITIONS  // Use manual limit switch locations
+    #define X_HOME_POS MANUAL_X_HOME_POS
+    #define Y_HOME_POS MANUAL_Y_HOME_POS
+    #define Z_HOME_POS MANUAL_Z_HOME_POS
+  #else //!MANUAL_HOME_POSITIONS – Use home switch positions based on homing direction and travel limits
+    #ifdef BED_CENTER_AT_0_0
+      #define X_HOME_POS X_MAX_LENGTH * X_HOME_DIR * 0.5
+      #define Y_HOME_POS Y_MAX_LENGTH * Y_HOME_DIR * 0.5
+    #else
+      #define X_HOME_POS (X_HOME_DIR < 0 ? X_MIN_POS : X_MAX_POS)
+      #define Y_HOME_POS (Y_HOME_DIR < 0 ? Y_MIN_POS : Y_MAX_POS)
+    #endif
+    #define Z_HOME_POS (Z_HOME_DIR < 0 ? Z_MIN_POS : Z_MAX_POS)
+  #endif //!MANUAL_HOME_POSITIONS
+
+  /**
+   * Auto Bed Leveling
+   */
+  #ifdef ENABLE_AUTO_BED_LEVELING
+    // Boundaries for probing based on set limits
+    #define MIN_PROBE_X (max(X_MIN_POS, X_MIN_POS + X_PROBE_OFFSET_FROM_EXTRUDER))
+    #define MAX_PROBE_X (min(X_MAX_POS, X_MAX_POS + X_PROBE_OFFSET_FROM_EXTRUDER))
+    #define MIN_PROBE_Y (max(Y_MIN_POS, Y_MIN_POS + Y_PROBE_OFFSET_FROM_EXTRUDER))
+    #define MAX_PROBE_Y (min(Y_MAX_POS, Y_MAX_POS + Y_PROBE_OFFSET_FROM_EXTRUDER))
+  #endif
+
+  /**
+   * MAX_STEP_FREQUENCY differs for TOSHIBA
+   */
+  #ifdef CONFIG_STEPPERS_TOSHIBA
+    #define MAX_STEP_FREQUENCY 10000 // Max step frequency for Toshiba Stepper Controllers
+  #else
+    #define MAX_STEP_FREQUENCY 40000 // Max step frequency for Ultimaker (5000 pps / half step)
+  #endif
+
+  // MS1 MS2 Stepper Driver Microstepping mode table
+  #define MICROSTEP1 LOW,LOW
+  #define MICROSTEP2 HIGH,LOW
+  #define MICROSTEP4 LOW,HIGH
+  #define MICROSTEP8 HIGH,HIGH
+  #define MICROSTEP16 HIGH,HIGH
+
+  /**
+   * Advance calculated values
+   */
+  #ifdef ADVANCE
+    #define EXTRUSION_AREA (0.25 * D_FILAMENT * D_FILAMENT * 3.14159)
+    #define STEPS_PER_CUBIC_MM_E (axis_steps_per_unit[E_AXIS] / EXTRUSION_AREA)
+  #endif
+
+  #ifdef ULTIPANEL
+   #undef SDCARDDETECTINVERTED
+  #endif
+
+  // Power Signal Control Definitions
+  // By default use ATX definition
+  #ifndef POWER_SUPPLY
+    #define POWER_SUPPLY 1
+  #endif
+  // 1 = ATX
+  #if (POWER_SUPPLY == 1)
+    #define PS_ON_AWAKE  LOW
+    #define PS_ON_ASLEEP HIGH
+  #endif
+  // 2 = X-Box 360 203W
+  #if (POWER_SUPPLY == 2)
+    #define PS_ON_AWAKE  HIGH
+    #define PS_ON_ASLEEP LOW
+  #endif
+
+  /**
+   * Temp Sensor defines
+   */
+  #if TEMP_SENSOR_0 == -2
+    #define HEATER_0_USES_MAX6675
+  #elif TEMP_SENSOR_0 == -1
+    #define HEATER_0_USES_AD595
+  #elif TEMP_SENSOR_0 == 0
+    #undef HEATER_0_MINTEMP
+    #undef HEATER_0_MAXTEMP
+  #elif TEMP_SENSOR_0 > 0
+    #define THERMISTORHEATER_0 TEMP_SENSOR_0
+    #define HEATER_0_USES_THERMISTOR
+  #endif
+
+  #if TEMP_SENSOR_1 == -1
+    #define HEATER_1_USES_AD595
+  #elif TEMP_SENSOR_1 == 0
+    #undef HEATER_1_MINTEMP
+    #undef HEATER_1_MAXTEMP
+  #elif TEMP_SENSOR_1 > 0
+    #define THERMISTORHEATER_1 TEMP_SENSOR_1
+    #define HEATER_1_USES_THERMISTOR
+  #endif
+
+  #if TEMP_SENSOR_2 == -1
+    #define HEATER_2_USES_AD595
+  #elif TEMP_SENSOR_2 == 0
+    #undef HEATER_2_MINTEMP
+    #undef HEATER_2_MAXTEMP
+  #elif TEMP_SENSOR_2 > 0
+    #define THERMISTORHEATER_2 TEMP_SENSOR_2
+    #define HEATER_2_USES_THERMISTOR
+  #endif
+
+  #if TEMP_SENSOR_3 == -1
+    #define HEATER_3_USES_AD595
+  #elif TEMP_SENSOR_3 == 0
+    #undef HEATER_3_MINTEMP
+    #undef HEATER_3_MAXTEMP
+  #elif TEMP_SENSOR_3 > 0
+    #define THERMISTORHEATER_3 TEMP_SENSOR_3
+    #define HEATER_3_USES_THERMISTOR
+  #endif
+
+  #if TEMP_SENSOR_BED == -1
+    #define BED_USES_AD595
+  #elif TEMP_SENSOR_BED == 0
+    #undef BED_MINTEMP
+    #undef BED_MAXTEMP
+  #elif TEMP_SENSOR_BED > 0
+    #define THERMISTORBED TEMP_SENSOR_BED
+    #define BED_USES_THERMISTOR
+  #endif
+
+  /**
+   * ARRAY_BY_EXTRUDERS based on EXTRUDERS
+   */
+  #if EXTRUDERS > 3
+    #define ARRAY_BY_EXTRUDERS(v1, v2, v3, v4) { v1, v2, v3, v4 }
+  #elif EXTRUDERS > 2
+    #define ARRAY_BY_EXTRUDERS(v1, v2, v3, v4) { v1, v2, v3 }
+  #elif EXTRUDERS > 1
+    #define ARRAY_BY_EXTRUDERS(v1, v2, v3, v4) { v1, v2 }
+  #else
+    #define ARRAY_BY_EXTRUDERS(v1, v2, v3, v4) { v1 }
+  #endif
+
+  /**
+   * Shorthand for pin tests, for temperature.cpp
+   */
+  #define HAS_TEMP_0 (defined(TEMP_0_PIN) && TEMP_0_PIN >= 0)
+  #define HAS_TEMP_1 (defined(TEMP_1_PIN) && TEMP_1_PIN >= 0)
+  #define HAS_TEMP_2 (defined(TEMP_2_PIN) && TEMP_2_PIN >= 0)
+  #define HAS_TEMP_3 (defined(TEMP_3_PIN) && TEMP_3_PIN >= 0)
+  #define HAS_TEMP_BED (defined(TEMP_BED_PIN) && TEMP_BED_PIN >= 0)
+  #define HAS_FILAMENT_SENSOR (defined(FILAMENT_SENSOR) && defined(FILWIDTH_PIN) && FILWIDTH_PIN >= 0)
+  #define HAS_HEATER_0 (defined(HEATER_0_PIN) && HEATER_0_PIN >= 0)
+  #define HAS_HEATER_1 (defined(HEATER_1_PIN) && HEATER_1_PIN >= 0)
+  #define HAS_HEATER_2 (defined(HEATER_2_PIN) && HEATER_2_PIN >= 0)
+  #define HAS_HEATER_3 (defined(HEATER_3_PIN) && HEATER_3_PIN >= 0)
+  #define HAS_HEATER_BED (defined(HEATER_BED_PIN) && HEATER_BED_PIN >= 0)
+  #define HAS_AUTO_FAN_0 (defined(EXTRUDER_0_AUTO_FAN_PIN) && EXTRUDER_0_AUTO_FAN_PIN >= 0)
+  #define HAS_AUTO_FAN_1 (defined(EXTRUDER_1_AUTO_FAN_PIN) && EXTRUDER_1_AUTO_FAN_PIN >= 0)
+  #define HAS_AUTO_FAN_2 (defined(EXTRUDER_2_AUTO_FAN_PIN) && EXTRUDER_2_AUTO_FAN_PIN >= 0)
+  #define HAS_AUTO_FAN_3 (defined(EXTRUDER_3_AUTO_FAN_PIN) && EXTRUDER_3_AUTO_FAN_PIN >= 0)
+  #define HAS_AUTO_FAN HAS_AUTO_FAN_0 || HAS_AUTO_FAN_1 || HAS_AUTO_FAN_2 || HAS_AUTO_FAN_3
+  #define HAS_FAN (defined(FAN_PIN) && FAN_PIN >= 0)
+
+  /**
+   * Helper Macros for heaters and extruder fan
+   */
+  #define WRITE_HEATER_0P(v) WRITE(HEATER_0_PIN, v)
+  #if EXTRUDERS > 1 || defined(HEATERS_PARALLEL)
+    #define WRITE_HEATER_1(v) WRITE(HEATER_1_PIN, v)
+    #if EXTRUDERS > 2
+      #define WRITE_HEATER_2(v) WRITE(HEATER_2_PIN, v)
+      #if EXTRUDERS > 3
+        #define WRITE_HEATER_3(v) WRITE(HEATER_3_PIN, v)
+      #endif
+    #endif
+  #endif
+  #ifdef HEATERS_PARALLEL
+    #define WRITE_HEATER_0(v) { WRITE_HEATER_0P(v); WRITE_HEATER_1(v); }
+  #else
+    #define WRITE_HEATER_0(v) WRITE_HEATER_0P(v)
+  #endif
+  #if HAS_HEATER_BED
+    #define WRITE_HEATER_BED(v) WRITE(HEATER_BED_PIN, v)
+  #endif
+  #if HAS_FAN
+    #define WRITE_FAN(v) WRITE(FAN_PIN, v)
+  #endif
+
+  /**
+   * Sampling period of the temperature routine
+   * This override comes originally from temperature.cpp
+   * The Configuration.h option is basically ignored.
+   */
+  #ifdef PID_dT
+    #undef PID_dT
+  #endif
+  #define PID_dT ((OVERSAMPLENR * 12.0)/(F_CPU / 64.0 / 256.0))
+
+
+#endif //CONFIGURATION_LCD
+#endif //CONDITIONALS_H

Marlin/Configuration.h

 #define Y_MAX_POS 200
 #define Z_MAX_POS 200
 
-#define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS)
-#define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS)
-#define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)
-
 //===========================================================================
 //============================= Filament Runout Sensor ======================
 //===========================================================================
 //#define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
 
 //===========================================================================
+//============================ Manual Bed Leveling ==========================
+//===========================================================================
+
+// #define MANUAL_BED_LEVELING  // Add display menu option for bed leveling
+// #define MESH_BED_LEVELING    // Enable mesh bed leveling
+
+#if defined(MESH_BED_LEVELING)
+  #define MESH_MIN_X 10
+  #define MESH_MAX_X (X_MAX_POS - MESH_MIN_X)
+  #define MESH_MIN_Y 10
+  #define MESH_MAX_Y (Y_MAX_POS - MESH_MIN_Y)
+  #define MESH_NUM_X_POINTS 3  // Don't use more than 7 points per axis, implementation limited
+  #define MESH_NUM_Y_POINTS 3
+  #define MESH_HOME_SEARCH_Z 4  // Z after Home, bed somewhere below but above 0.0
+#endif  // MESH_BED_LEVELING
+
+//===========================================================================
 //============================= Bed Auto Leveling ===========================
 //===========================================================================
 
 
   #ifdef AUTO_BED_LEVELING_GRID
 
-    // Use one of these defines to specify the origin
-    // for a topographical map to be printed for your bed.
-    enum { OriginBackLeft, OriginFrontLeft, OriginBackRight, OriginFrontRight };
-    #define TOPO_ORIGIN OriginFrontLeft
-
-    // The edges of the rectangle in which to probe
     #define LEFT_PROBE_BED_POSITION 15
     #define RIGHT_PROBE_BED_POSITION 170
     #define FRONT_PROBE_BED_POSITION 20
 // REMEMBER TO INSTALL LiquidCrystal_I2C.h in your ARDUINO library folder: https://github.com/kiyoshigawa/LiquidCrystal_I2C
 //#define RA_CONTROL_PANEL
 
-//automatic expansion
-#if defined (MAKRPANEL)
- #define DOGLCD
- #define SDSUPPORT
- #define ULTIPANEL
- #define NEWPANEL
- #define DEFAULT_LCD_CONTRAST 17
-#endif
-
-#if defined(miniVIKI) || defined(VIKI2)
- #define ULTRA_LCD  //general LCD support, also 16x2
- #define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
- #define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
- 
-  #ifdef miniVIKI
-   #define DEFAULT_LCD_CONTRAST 95
-  #else
-   #define DEFAULT_LCD_CONTRAST 40
-  #endif
-  
- #define ENCODER_PULSES_PER_STEP 4
- #define ENCODER_STEPS_PER_MENU_ITEM 1
-#endif
-
-#if defined (PANEL_ONE)
- #define SDSUPPORT
- #define ULTIMAKERCONTROLLER
-#endif
-
-#if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
- #define DOGLCD
- #define U8GLIB_ST7920
- #define REPRAP_DISCOUNT_SMART_CONTROLLER
-#endif
-
-#if defined(ULTIMAKERCONTROLLER) || defined(REPRAP_DISCOUNT_SMART_CONTROLLER) || defined(G3D_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
-#endif
-
-#if defined(REPRAPWORLD_KEYPAD)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
-#if defined(RA_CONTROL_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
- #define LCD_I2C_TYPE_PCA8574
- #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-#endif
-
-//I2C PANELS
+/**
+ * I2C Panels
+ */
 
 //#define LCD_I2C_SAINSMART_YWROBOT
-#ifdef LCD_I2C_SAINSMART_YWROBOT
-  // This uses the LiquidCrystal_I2C library ( https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home )
-  // Make sure it is placed in the Arduino libraries directory.
-  #define LCD_I2C_TYPE_PCF8575
-  #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
 //#define LCD_I2C_PANELOLU2
-#ifdef LCD_I2C_PANELOLU2
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
-  // Note: The PANELOLU2 encoder click input can either be directly connected to a pin
-  //       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
-  #define NEWPANEL
-  #define ULTIPANEL
-
-  #ifndef ENCODER_PULSES_PER_STEP
-	#define ENCODER_PULSES_PER_STEP 4
-  #endif
-
-  #ifndef ENCODER_STEPS_PER_MENU_ITEM
-	#define ENCODER_STEPS_PER_MENU_ITEM 1
-  #endif
-
-
-  #ifdef LCD_USE_I2C_BUZZER
-	#define LCD_FEEDBACK_FREQUENCY_HZ 1000
-	#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100
-  #endif
-
-#endif
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
 //#define LCD_I2C_VIKI
-#ifdef LCD_I2C_VIKI
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // Note: The pause/stop/resume LCD button pin should be connected to the Arduino
-  //       BTN_ENC pin (or set BTN_ENC to -1 if not used)
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD (requires LiquidTWI2 v1.2.3 or later)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // Shift register panels
 // ---------------------
 // https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection 
 
 //#define SAV_3DLCD
-#ifdef SAV_3DLCD
-   #define SR_LCD_2W_NL    // Non latching 2 wire shiftregister
-   #define NEWPANEL
-   #define ULTIPANEL
-#endif
-
-
-#ifdef ULTIPANEL
-//  #define NEWPANEL  //enable this if you have a click-encoder panel
-  #define SDSUPPORT
-  #define ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the DOG graphic display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 20
-    #define LCD_HEIGHT 4
-  #endif
-#else //no panel but just LCD
-  #ifdef ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 16
-    #define LCD_HEIGHT 2
-  #endif
-  #endif
-#endif
-
-// default LCD contrast for dogm-like LCD displays
-#ifdef DOGLCD
-# ifndef DEFAULT_LCD_CONTRAST
-#  define DEFAULT_LCD_CONTRAST 32
-# endif
-#endif
 
 // Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
 //#define FAST_PWM_FAN
 
-// Temperature status LEDs that display the hotend and bet temperature.
-// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
-// Otherwise the RED led is on. There is 1C hysteresis.
-//#define TEMP_STAT_LEDS
-
 // Use software PWM to drive the fan, as for the heaters. This uses a very low frequency
 // which is not ass annoying as with the hardware PWM. On the other hand, if this frequency
 // is too low, you should also increment SOFT_PWM_SCALE.
 // at zero value, there are 128 effective control positions.
 #define SOFT_PWM_SCALE 0
 
+// Temperature status LEDs that display the hotend and bet temperature.
+// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
+// Otherwise the RED led is on. There is 1C hysteresis.
+//#define TEMP_STAT_LEDS
+
 // M240  Triggers a camera by emulating a Canon RC-1 Remote
 // Data from: http://www.doc-diy.net/photo/rc-1_hacked/
 // #define PHOTOGRAPH_PIN     23
 #include "Configuration_adv.h"
 #include "thermistortables.h"
 
-#endif //__CONFIGURATION_H
+#endif //CONFIGURATION_H

Marlin/ConfigurationStore.cpp

  *  max_xy_jerk
  *  max_z_jerk
  *  max_e_jerk
- *  add_homing (x3)
+ *  home_offset (x3)
+ *
+ * Mesh bed leveling:
+ *  active
+ *  mesh_num_x
+ *  mesh_num_y
+ *  z_values[][]
  *
  * DELTA:
  *  endstop_adj (x3)
 #include "ultralcd.h"
 #include "ConfigurationStore.h"
 
+#if defined(MESH_BED_LEVELING)
+   #include "mesh_bed_leveling.h"
+#endif  // MESH_BED_LEVELING
+
 void _EEPROM_writeData(int &pos, uint8_t* value, uint8_t size) {
   uint8_t c;
   while(size--) {
 // wrong data being written to the variables.
 // ALSO:  always make sure the variables in the Store and retrieve sections are in the same order.
 
-#define EEPROM_VERSION "V16"
+#define EEPROM_VERSION "V17"
 
 #ifdef EEPROM_SETTINGS
 
   EEPROM_WRITE_VAR(i, max_xy_jerk);
   EEPROM_WRITE_VAR(i, max_z_jerk);
   EEPROM_WRITE_VAR(i, max_e_jerk);
-  EEPROM_WRITE_VAR(i, add_homing);
+  EEPROM_WRITE_VAR(i, home_offset);
+
+  uint8_t mesh_num_x = 3;
+  uint8_t mesh_num_y = 3;
+  #if defined(MESH_BED_LEVELING)
+    // Compile time test that sizeof(mbl.z_values) is as expected
+    typedef char c_assert[(sizeof(mbl.z_values) == MESH_NUM_X_POINTS*MESH_NUM_Y_POINTS*sizeof(dummy)) ? 1 : -1];
+    mesh_num_x = MESH_NUM_X_POINTS;
+    mesh_num_y = MESH_NUM_Y_POINTS;
+    EEPROM_WRITE_VAR(i, mbl.active);
+    EEPROM_WRITE_VAR(i, mesh_num_x);
+    EEPROM_WRITE_VAR(i, mesh_num_y);
+    EEPROM_WRITE_VAR(i, mbl.z_values);
+  #else
+    uint8_t dummy_uint8 = 0;
+    EEPROM_WRITE_VAR(i, dummy_uint8);
+    EEPROM_WRITE_VAR(i, mesh_num_x);
+    EEPROM_WRITE_VAR(i, mesh_num_y);
+    dummy = 0.0f;
+    for (int q=0; q<mesh_num_x*mesh_num_y; q++) {
+      EEPROM_WRITE_VAR(i, dummy);
+    }
+  #endif  // MESH_BED_LEVELING
 
   #ifdef DELTA
     EEPROM_WRITE_VAR(i, endstop_adj);               // 3 floats
     EEPROM_READ_VAR(i, max_feedrate);
     EEPROM_READ_VAR(i, max_acceleration_units_per_sq_second);
 
-        // steps per sq second need to be updated to agree with the units per sq second (as they are what is used in the planner)
+    // steps per sq second need to be updated to agree with the units per sq second (as they are what is used in the planner)
     reset_acceleration_rates();
 
     EEPROM_READ_VAR(i, acceleration);
     EEPROM_READ_VAR(i, max_xy_jerk);
     EEPROM_READ_VAR(i, max_z_jerk);
     EEPROM_READ_VAR(i, max_e_jerk);
-    EEPROM_READ_VAR(i, add_homing);
+    EEPROM_READ_VAR(i, home_offset);
+
+    uint8_t mesh_num_x = 0;
+    uint8_t mesh_num_y = 0;
+    #if defined(MESH_BED_LEVELING)
+      EEPROM_READ_VAR(i, mbl.active);
+      EEPROM_READ_VAR(i, mesh_num_x);
+      EEPROM_READ_VAR(i, mesh_num_y);
+      if (mesh_num_x != MESH_NUM_X_POINTS ||
+          mesh_num_y != MESH_NUM_Y_POINTS) {
+        mbl.reset();
+        for (int q=0; q<mesh_num_x*mesh_num_y; q++) {
+          EEPROM_READ_VAR(i, dummy);
+        }
+      } else {
+        EEPROM_READ_VAR(i, mbl.z_values);
+      }
+    #else
+      uint8_t dummy_uint8 = 0;
+      EEPROM_READ_VAR(i, dummy_uint8);
+      EEPROM_READ_VAR(i, mesh_num_x);
+      EEPROM_READ_VAR(i, mesh_num_y);
+      for (int q=0; q<mesh_num_x*mesh_num_y; q++) {
+        EEPROM_READ_VAR(i, dummy);
+      }
+    #endif  // MESH_BED_LEVELING
 
     #ifdef DELTA
       EEPROM_READ_VAR(i, endstop_adj);                // 3 floats
   max_xy_jerk = DEFAULT_XYJERK;
   max_z_jerk = DEFAULT_ZJERK;
   max_e_jerk = DEFAULT_EJERK;
-  add_homing[X_AXIS] = add_homing[Y_AXIS] = add_homing[Z_AXIS] = 0;
+  home_offset[X_AXIS] = home_offset[Y_AXIS] = home_offset[Z_AXIS] = 0;
+
+  #if defined(MESH_BED_LEVELING)
+    mbl.active = 0;
+  #endif  // MESH_BED_LEVELING
 
   #ifdef DELTA
     endstop_adj[X_AXIS] = endstop_adj[Y_AXIS] = endstop_adj[Z_AXIS] = 0;
     SERIAL_ECHOLNPGM("Home offset (mm):");
     SERIAL_ECHO_START;
   }
-  SERIAL_ECHOPAIR("  M206 X", add_homing[X_AXIS] );
-  SERIAL_ECHOPAIR(" Y", add_homing[Y_AXIS] );
-  SERIAL_ECHOPAIR(" Z", add_homing[Z_AXIS] );
+  SERIAL_ECHOPAIR("  M206 X", home_offset[X_AXIS] );
+  SERIAL_ECHOPAIR(" Y", home_offset[Y_AXIS] );
+  SERIAL_ECHOPAIR(" Z", home_offset[Z_AXIS] );
   SERIAL_EOL;
 
   #ifdef DELTA

Marlin/Configuration_adv.h

 #ifndef CONFIGURATION_ADV_H
 #define CONFIGURATION_ADV_H
 
+#include "Conditionals.h"
+
 //===========================================================================
 //=============================Thermal Settings  ============================
 //===========================================================================
 
 #define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing
 
-
-//// AUTOSET LOCATIONS OF LIMIT SWITCHES
-//// Added by ZetaPhoenix 09-15-2012
-#ifdef MANUAL_HOME_POSITIONS  // Use manual limit switch locations
-  #define X_HOME_POS MANUAL_X_HOME_POS
-  #define Y_HOME_POS MANUAL_Y_HOME_POS
-  #define Z_HOME_POS MANUAL_Z_HOME_POS
-#else //Set min/max homing switch positions based upon homing direction and min/max travel limits
-  //X axis
-  #if X_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * -0.5
-    #else
-      #define X_HOME_POS X_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * 0.5
-    #else
-      #define X_HOME_POS X_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //X_HOME_DIR == -1
-
-  //Y axis
-  #if Y_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * -0.5
-    #else
-      #define Y_HOME_POS Y_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * 0.5
-    #else
-      #define Y_HOME_POS Y_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //Y_HOME_DIR == -1
-
-  // Z axis
-  #if Z_HOME_DIR == -1 //BED_CENTER_AT_0_0 not used
-    #define Z_HOME_POS Z_MIN_POS
-  #else
-    #define Z_HOME_POS Z_MAX_POS
-  #endif //Z_HOME_DIR == -1
-#endif //End auto min/max positions
-//END AUTOSET LOCATIONS OF LIMIT SWITCHES -ZP
-
-
 //#define Z_LATE_ENABLE // Enable Z the last moment. Needed if your Z driver overheats.
 
 // A single Z stepper driver is usually used to drive 2 stepper motors.
 // On a RAMPS (or other 5 driver) motherboard, using this feature will limit you to using 1 extruder.
 //#define Z_DUAL_STEPPER_DRIVERS
 
-#ifdef Z_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
 // Same again but for Y Axis.
 //#define Y_DUAL_STEPPER_DRIVERS
 
 // Define if the two Y drives need to rotate in opposite directions
 #define INVERT_Y2_VS_Y_DIR true
 
-#ifdef Y_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
-#if defined (Z_DUAL_STEPPER_DRIVERS) && defined (Y_DUAL_STEPPER_DRIVERS)
-  #error "You cannot have dual drivers for both Y and Z"
-#endif
-
 // Enable this for dual x-carriage printers.
 // A dual x-carriage design has the advantage that the inactive extruder can be parked which
 // prevents hot-end ooze contaminating the print. It also reduces the weight of each x-carriage
 // allowing faster printing speeds.
 //#define DUAL_X_CARRIAGE
 #ifdef DUAL_X_CARRIAGE
-// Configuration for second X-carriage
-// Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
-// the second x-carriage always homes to the maximum endstop.
-#define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
-#define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
-#define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position
-#define X2_HOME_POS X2_MAX_POS // default home position is the maximum carriage position
-    // However: In this mode the EXTRUDER_OFFSET_X value for the second extruder provides a software
-    // override for X2_HOME_POS. This also allow recalibration of the distance between the two endstops
-    // without modifying the firmware (through the "M218 T1 X???" command).
-    // Remember: you should set the second extruder x-offset to 0 in your slicer.
-
-// Pins for second x-carriage stepper driver (defined here to avoid further complicating pins.h)
-#define X2_ENABLE_PIN 29
-#define X2_STEP_PIN 25
-#define X2_DIR_PIN 23
-
-// There are a few selectable movement modes for dual x-carriages using M605 S<mode>
-//    Mode 0: Full control. The slicer has full control over both x-carriages and can achieve optimal travel results
-//                           as long as it supports dual x-carriages. (M605 S0)
-//    Mode 1: Auto-park mode. The firmware will automatically park and unpark the x-carriages on tool changes so
-//                           that additional slicer support is not required. (M605 S1)
-//    Mode 2: Duplication mode. The firmware will transparently make the second x-carriage and extruder copy all
-//                           actions of the first x-carriage. This allows the printer to print 2 arbitrary items at
-//                           once. (2nd extruder x offset and temp offset are set using: M605 S2 [Xnnn] [Rmmm])
-
-// This is the default power-up mode which can be later using M605.
-#define DEFAULT_DUAL_X_CARRIAGE_MODE 0
-
-// Default settings in "Auto-park Mode"
-#define TOOLCHANGE_PARK_ZLIFT   0.2      // the distance to raise Z axis when parking an extruder
-#define TOOLCHANGE_UNPARK_ZLIFT 1        // the distance to raise Z axis when unparking an extruder
-
-// Default x offset in duplication mode (typically set to half print bed width)
-#define DEFAULT_DUPLICATION_X_OFFSET 100
+  // Configuration for second X-carriage
+  // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
+  // the second x-carriage always homes to the maximum endstop.
+  #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
+  #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
+  #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position
+  #define X2_HOME_POS X2_MAX_POS // default home position is the maximum carriage position
+      // However: In this mode the EXTRUDER_OFFSET_X value for the second extruder provides a software
+      // override for X2_HOME_POS. This also allow recalibration of the distance between the two endstops
+      // without modifying the firmware (through the "M218 T1 X???" command).
+      // Remember: you should set the second extruder x-offset to 0 in your slicer.
+
+  // Pins for second x-carriage stepper driver (defined here to avoid further complicating pins.h)
+  #define X2_ENABLE_PIN 29
+  #define X2_STEP_PIN 25
+  #define X2_DIR_PIN 23
+
+  // There are a few selectable movement modes for dual x-carriages using M605 S<mode>
+  //    Mode 0: Full control. The slicer has full control over both x-carriages and can achieve optimal travel results
+  //                           as long as it supports dual x-carriages. (M605 S0)
+  //    Mode 1: Auto-park mode. The firmware will automatically park and unpark the x-carriages on tool changes so
+  //                           that additional slicer support is not required. (M605 S1)
+  //    Mode 2: Duplication mode. The firmware will transparently make the second x-carriage and extruder copy all
+  //                           actions of the first x-carriage. This allows the printer to print 2 arbitrary items at
+  //                           once. (2nd extruder x offset and temp offset are set using: M605 S2 [Xnnn] [Rmmm])
+
+  // This is the default power-up mode which can be later using M605.
+  #define DEFAULT_DUAL_X_CARRIAGE_MODE 0
+
+  // Default settings in "Auto-park Mode"
+  #define TOOLCHANGE_PARK_ZLIFT   0.2      // the distance to raise Z axis when parking an extruder
+  #define TOOLCHANGE_UNPARK_ZLIFT 1        // the distance to raise Z axis when unparking an extruder
+
+  // Default x offset in duplication mode (typically set to half print bed width)
+  #define DEFAULT_DUPLICATION_X_OFFSET 100
 
 #endif //DUAL_X_CARRIAGE
 
 //#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
-#ifdef CONFIG_STEPPERS_TOSHIBA
-#define MAX_STEP_FREQUENCY 10000 // Max step frequency for Toshiba Stepper Controllers
-#else
-#define MAX_STEP_FREQUENCY 40000 // Max step frequency for Ultimaker (5000 pps / half step)
-#endif
+
 //By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false
 #define INVERT_Y_STEP_PIN false
 #define INVERT_Z_STEP_PIN false
 #define INVERT_E_STEP_PIN false
 
-//default stepper release if idle. Set to 0 to deactivate.
+// Default stepper release if idle. Set to 0 to deactivate.
 #define DEFAULT_STEPPER_DEACTIVE_TIME 60
 
 #define DEFAULT_MINIMUMFEEDRATE       0.0     // minimum feedrate
 #define DEFAULT_MINTRAVELFEEDRATE     0.0
 
-// Feedrates for manual moves along X, Y, Z, E from panel
-#ifdef ULTIPANEL
-#define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60}  // set the speeds for manual moves (mm/min)
-#endif
-
-//Comment to disable setting feedrate multiplier via encoder
 #ifdef ULTIPANEL
-    #define ULTIPANEL_FEEDMULTIPLY
+  #define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60} // Feedrates for manual moves along X, Y, Z, E from panel
+  #define ULTIPANEL_FEEDMULTIPLY  // Comment to disable setting feedrate multiplier via encoder
 #endif
 
 // minimum time in microseconds that a movement needs to take if the buffer is emptied.
 // if unwanted behavior is observed on a user's machine when running at very slow speeds.
 #define MINIMUM_PLANNER_SPEED 0.05// (mm/sec)
 
-// MS1 MS2 Stepper Driver Microstepping mode table
-#define MICROSTEP1 LOW,LOW
-#define MICROSTEP2 HIGH,LOW
-#define MICROSTEP4 LOW,HIGH
-#define MICROSTEP8 HIGH,HIGH
-#define MICROSTEP16 HIGH,HIGH
-
 // Microstep setting (Only functional when stepper driver microstep pins are connected to MCU.
 #define MICROSTEP_MODES {16,16,16,16,16} // [1,2,4,8,16]
 
   #define PROGRESS_MSG_EXPIRE   0
   // Enable this to show messages for MSG_TIME then hide them
   //#define PROGRESS_MSG_ONCE
-  #ifdef DOGLCD
-    #warning LCD_PROGRESS_BAR does not apply to graphical displays at this time.
-  #endif
-  #ifdef FILAMENT_LCD_DISPLAY
-    #error LCD_PROGRESS_BAR and FILAMENT_LCD_DISPLAY are not fully compatible. Comment out this line to use both.
-  #endif
 #endif
 
 // The hardware watchdog should reset the microcontroller disabling all outputs, in case the firmware gets stuck and doesn't do temperature regulation.
   #define BABYSTEP_XY  //not only z, but also XY in the menu. more clutter, more functions
   #define BABYSTEP_INVERT_Z false  //true for inverse movements in Z
   #define BABYSTEP_Z_MULTIPLICATOR 2 //faster z movements
-
-  #ifdef COREXY
-    #error BABYSTEPPING not implemented for COREXY yet.
-  #endif
-
-  #ifdef DELTA
-    #ifdef BABYSTEP_XY
-      #error BABYSTEPPING only implemented for Z axis on deltabots.
-    #endif
-  #endif
 #endif
 
 // extruder advance constant (s2/mm3)
 
 #ifdef ADVANCE
   #define EXTRUDER_ADVANCE_K .0
-
   #define D_FILAMENT 2.85
   #define STEPS_MM_E 836
-  #define EXTRUSION_AREA (0.25 * D_FILAMENT * D_FILAMENT * 3.14159)
-  #define STEPS_PER_CUBIC_MM_E (axis_steps_per_unit[E_AXIS]/ EXTRUSION_AREA)
-
 #endif // ADVANCE
 
 // Arc interpretation settings:
 // be commented out otherwise
 #define SDCARDDETECTINVERTED
 
-#ifdef ULTIPANEL
- #undef SDCARDDETECTINVERTED
-#endif
-
-// Power Signal Control Definitions
-// By default use ATX definition
-#ifndef POWER_SUPPLY
-  #define POWER_SUPPLY 1
-#endif
-// 1 = ATX
-#if (POWER_SUPPLY == 1)
-  #define PS_ON_AWAKE  LOW
-  #define PS_ON_ASLEEP HIGH
-#endif
-// 2 = X-Box 360 203W
-#if (POWER_SUPPLY == 2)
-  #define PS_ON_AWAKE  HIGH
-  #define PS_ON_ASLEEP LOW
-#endif
-
 // Control heater 0 and heater 1 in parallel.
 //#define HEATERS_PARALLEL
 
 
 // The number of linear motions that can be in the plan at any give time.
 // THE BLOCK_BUFFER_SIZE NEEDS TO BE A POWER OF 2, i.g. 8,16,32 because shifts and ors are used to do the ring-buffering.
-#if defined SDSUPPORT
+#ifdef SDSUPPORT
   #define BLOCK_BUFFER_SIZE 16   // SD,LCD,Buttons take more memory, block buffer needs to be smaller
 #else
   #define BLOCK_BUFFER_SIZE 16 // maximize block buffer
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-//adds support for experimental filament exchange support M600; requires display
+// Add support for experimental filament exchange support M600; requires display
 #ifdef ULTIPANEL
-  #define FILAMENTCHANGEENABLE
+  //#define FILAMENTCHANGEENABLE
   #ifdef FILAMENTCHANGEENABLE
     #define FILAMENTCHANGE_XPOS 3
     #define FILAMENTCHANGE_YPOS 3
   #endif
 #endif
 
-#ifdef FILAMENTCHANGEENABLE
-  #ifdef EXTRUDER_RUNOUT_PREVENT
-    #error EXTRUDER_RUNOUT_PREVENT currently incompatible with FILAMENTCHANGE
-  #endif
-#endif
-
-
 /******************************************************************************\
  * enable this section if you have TMC26X motor drivers. 
  * you need to import the TMC26XStepper library into the arduino IDE for this
 	
 #endif
 
+#include "Conditionals.h"
+#include "SanityCheck.h"
 
-//===========================================================================
-//=============================  Define Defines  ============================
-//===========================================================================
-
-#if defined (ENABLE_AUTO_BED_LEVELING) && defined (DELTA)
-  #error "Bed Auto Leveling is still not compatible with Delta Kinematics."
-#endif
-
-#if EXTRUDERS > 1 && defined TEMP_SENSOR_1_AS_REDUNDANT
-  #error "You cannot use TEMP_SENSOR_1_AS_REDUNDANT if EXTRUDERS > 1"
-#endif
-
-#if EXTRUDERS > 1 && defined HEATERS_PARALLEL
-  #error "You cannot use HEATERS_PARALLEL if EXTRUDERS > 1"
-#endif
-
-#if TEMP_SENSOR_0 > 0
-  #define THERMISTORHEATER_0 TEMP_SENSOR_0
-  #define HEATER_0_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_1 > 0
-  #define THERMISTORHEATER_1 TEMP_SENSOR_1
-  #define HEATER_1_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_2 > 0
-  #define THERMISTORHEATER_2 TEMP_SENSOR_2
-  #define HEATER_2_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_3 > 0
-  #define THERMISTORHEATER_3 TEMP_SENSOR_3
-  #define HEATER_3_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_BED > 0
-  #define THERMISTORBED TEMP_SENSOR_BED
-  #define BED_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_0 == -1
-  #define HEATER_0_USES_AD595
-#endif
-#if TEMP_SENSOR_1 == -1
-  #define HEATER_1_USES_AD595
-#endif
-#if TEMP_SENSOR_2 == -1
-  #define HEATER_2_USES_AD595
-#endif
-#if TEMP_SENSOR_3 == -1
-  #define HEATER_3_USES_AD595
-#endif
-#if TEMP_SENSOR_BED == -1
-  #define BED_USES_AD595
-#endif
-#if TEMP_SENSOR_0 == -2
-  #define HEATER_0_USES_MAX6675
-#endif
-#if TEMP_SENSOR_0 == 0
-  #undef HEATER_0_MINTEMP
-  #undef HEATER_0_MAXTEMP
-#endif
-#if TEMP_SENSOR_1 == 0
-  #undef HEATER_1_MINTEMP
-  #undef HEATER_1_MAXTEMP
-#endif
-#if TEMP_SENSOR_2 == 0
-  #undef HEATER_2_MINTEMP
-  #undef HEATER_2_MAXTEMP
-#endif
-#if TEMP_SENSOR_3 == 0
-  #undef HEATER_3_MINTEMP
-  #undef HEATER_3_MAXTEMP
-#endif
-#if TEMP_SENSOR_BED == 0
-  #undef BED_MINTEMP
-  #undef BED_MAXTEMP
-#endif
-
-
-#endif //__CONFIGURATION_ADV_H
+#endif //CONFIGURATION_ADV_H

Marlin/Marlin.h

 
 #include "fastio.h"
 #include "Configuration.h"
-#include "pins.h"
-
-#ifndef AT90USB
-  #define  HardwareSerial_h // trick to disable the standard HWserial
-#endif
 
 #if (ARDUINO >= 100)
   #include "Arduino.h"
   #define disable_e3() /* nothing */
 #endif
 
-enum AxisEnum {X_AXIS=0, Y_AXIS=1, Z_AXIS=2, E_AXIS=3, X_HEAD=4, Y_HEAD=5}; 
+enum AxisEnum {X_AXIS=0, Y_AXIS=1, A_AXIS=0, B_AXIS=1, Z_AXIS=2, E_AXIS=3, X_HEAD=4, Y_HEAD=5};
 //X_HEAD and Y_HEAD is used for systems that don't have a 1:1 relationship between X_AXIS and X Head movement, like CoreXY bots.
 
 void FlushSerialRequestResend();
 
 void get_coordinates();
 #ifdef DELTA
-void calculate_delta(float cartesian[3]);
+  void calculate_delta(float cartesian[3]);
   #ifdef ENABLE_AUTO_BED_LEVELING
-  extern int delta_grid_spacing[2];
-  void adjust_delta(float cartesian[3]);
+    extern int delta_grid_spacing[2];
+    void adjust_delta(float cartesian[3]);
   #endif
-extern float delta[3];
-void prepare_move_raw();
+  extern float delta[3];
+  void prepare_move_raw();
 #endif
 #ifdef SCARA
-void calculate_delta(float cartesian[3]);
-void calculate_SCARA_forward_Transform(float f_scara[3]);
+  void calculate_delta(float cartesian[3]);
+  void calculate_SCARA_forward_Transform(float f_scara[3]);
 #endif
 void reset_bed_level();
 void prepare_move();
 void Stop();
 
 #ifdef FILAMENT_RUNOUT_SENSOR
-void filrunout();
+  void filrunout();
 #endif
 
 bool IsStopped();
 void refresh_cmd_timeout(void);
 
 #ifdef FAST_PWM_FAN
-void setPwmFrequency(uint8_t pin, int val);
+  void setPwmFrequency(uint8_t pin, int val);
 #endif
 
 #ifndef CRITICAL_SECTION_START
 extern float filament_size[EXTRUDERS]; // cross-sectional area of filament (in millimeters), typically around 1.75 or 2.85, 0 disables the volumetric calculations for the extruder.
 extern float volumetric_multiplier[EXTRUDERS]; // reciprocal of cross-sectional area of filament (in square millimeters), stored this way to reduce computational burden in planner
 extern float current_position[NUM_AXIS] ;
-extern float add_homing[3];
+extern float home_offset[3];
 #ifdef DELTA
-extern float endstop_adj[3];
-extern float delta_radius;
-extern float delta_diagonal_rod;
-extern float delta_segments_per_second;
-void recalc_delta_settings(float radius, float diagonal_rod);
+  extern float endstop_adj[3];
+  extern float delta_radius;
+  extern float delta_diagonal_rod;
+  extern float delta_segments_per_second;
+  void recalc_delta_settings(float radius, float diagonal_rod);
 #endif
 #ifdef SCARA
-extern float axis_scaling[3];  // Build size scaling
+  extern float axis_scaling[3];  // Build size scaling
 #endif
 extern float min_pos[3];
 extern float max_pos[3];
 extern float zprobe_zoffset;
 extern int fanSpeed;
 #ifdef BARICUDA
-extern int ValvePressure;
-extern int EtoPPressure;
+  extern int ValvePressure;
+  extern int EtoPPressure;
 #endif
 
 #ifdef FAN_SOFT_PWM
-extern unsigned char fanSpeedSoftPwm;
+  extern unsigned char fanSpeedSoftPwm;
 #endif
 
 #ifdef FILAMENT_SENSOR
   extern bool filament_sensor;  //indicates that filament sensor readings should control extrusion
   extern float filament_width_meas; //holds the filament diameter as accurately measured
   extern signed char measurement_delay[];  //ring buffer to delay measurement
-  extern int delay_index1, delay_index2;  //index into ring buffer
+  extern int delay_index1, delay_index2;  //ring buffer index. used by planner, temperature, and main code
   extern float delay_dist; //delay distance counter
   extern int meas_delay_cm; //delay distance
 #endif
 
 #ifdef FWRETRACT
-extern bool autoretract_enabled;
-extern bool retracted[EXTRUDERS];
-extern float retract_length, retract_length_swap, retract_feedrate, retract_zlift;
-extern float retract_recover_length, retract_recover_length_swap, retract_recover_feedrate;
+  extern bool autoretract_enabled;
+  extern bool retracted[EXTRUDERS];
+  extern float retract_length, retract_length_swap, retract_feedrate, retract_zlift;
+  extern float retract_recover_length, retract_recover_length_swap, retract_recover_feedrate;
 #endif
 
 extern unsigned long starttime;
 extern uint8_t active_extruder;
 
 #ifdef DIGIPOT_I2C
-extern void digipot_i2c_set_current( int channel, float current );
-extern void digipot_i2c_init();
-#endif
-
+  extern void digipot_i2c_set_current( int channel, float current );
+  extern void digipot_i2c_init();
 #endif
 
 extern void calculate_volumetric_multipliers();
 
+#endif //MARLIN_H

Marlin/Marlin_main.cpp

 #include "Marlin.h"
 
 #ifdef ENABLE_AUTO_BED_LEVELING
-  #if Z_MIN_PIN == -1
-    #error "You must have a Z_MIN endstop to enable Auto Bed Leveling feature. Z_MIN_PIN must point to a valid hardware pin."
-  #endif
   #include "vector_3.h"
   #ifdef AUTO_BED_LEVELING_GRID
     #include "qr_solve.h"
 
 #define SERVO_LEVELING defined(ENABLE_AUTO_BED_LEVELING) && PROBE_SERVO_DEACTIVATION_DELAY > 0
 
+#if defined(MESH_BED_LEVELING)
+  #include "mesh_bed_leveling.h"
+#endif  // MESH_BED_LEVELING
+
 #include "ultralcd.h"
 #include "planner.h"
 #include "stepper.h"
   #endif
 };
 float current_position[NUM_AXIS] = { 0.0, 0.0, 0.0, 0.0 };
-float add_homing[3] = { 0, 0, 0 };
+float home_offset[3] = { 0, 0, 0 };
 #ifdef DELTA
   float endstop_adj[3] = { 0, 0, 0 };
 #endif
 XYZ_CONSTS_FROM_CONFIG(signed char, home_dir,  HOME_DIR);
 
 #ifdef DUAL_X_CARRIAGE
-  #if EXTRUDERS == 1 || defined(COREXY) \
-      || !defined(X2_ENABLE_PIN) || !defined(X2_STEP_PIN) || !defined(X2_DIR_PIN) \
-      || !defined(X2_HOME_POS) || !defined(X2_MIN_POS) || !defined(X2_MAX_POS) \
-      || !defined(X_MAX_PIN) || X_MAX_PIN < 0
-    #error "Missing or invalid definitions for DUAL_X_CARRIAGE mode."
-  #endif
-  #if X_HOME_DIR != -1 || X2_HOME_DIR != 1
-    #error "Please use canonical x-carriage assignment" // the x-carriages are defined by their homing directions
-  #endif
 
-#define DXC_FULL_CONTROL_MODE 0
-#define DXC_AUTO_PARK_MODE    1
-#define DXC_DUPLICATION_MODE  2
-static int dual_x_carriage_mode = DEFAULT_DUAL_X_CARRIAGE_MODE;
-
-static float x_home_pos(int extruder) {
-  if (extruder == 0)
-    return base_home_pos(X_AXIS) + add_homing[X_AXIS];
-  else
-    // In dual carriage mode the extruder offset provides an override of the
-    // second X-carriage offset when homed - otherwise X2_HOME_POS is used.
-    // This allow soft recalibration of the second extruder offset position without firmware reflash
-    // (through the M218 command).
-    return (extruder_offset[X_AXIS][1] > 0) ? extruder_offset[X_AXIS][1] : X2_HOME_POS;
-}
+  #define DXC_FULL_CONTROL_MODE 0
+  #define DXC_AUTO_PARK_MODE    1
+  #define DXC_DUPLICATION_MODE  2
 
-static int x_home_dir(int extruder) {
-  return (extruder == 0) ? X_HOME_DIR : X2_HOME_DIR;
-}
+  static int dual_x_carriage_mode = DEFAULT_DUAL_X_CARRIAGE_MODE;
+
+  static float x_home_pos(int extruder) {
+    if (extruder == 0)
+      return base_home_pos(X_AXIS) + add_homing[X_AXIS];
+    else
+      // In dual carriage mode the extruder offset provides an override of the
+      // second X-carriage offset when homed - otherwise X2_HOME_POS is used.
+      // This allow soft recalibration of the second extruder offset position without firmware reflash
+      // (through the M218 command).
+      return (extruder_offset[X_AXIS][1] > 0) ? extruder_offset[X_AXIS][1] : X2_HOME_POS;
+  }
+
+  static int x_home_dir(int extruder) {
+    return (extruder == 0) ? X_HOME_DIR : X2_HOME_DIR;
+  }
+
+  static float inactive_extruder_x_pos = X2_MAX_POS; // used in mode 0 & 1
+  static bool active_extruder_parked = false; // used in mode 1 & 2
+  static float raised_parked_position[NUM_AXIS]; // used in mode 1
+  static unsigned long delayed_move_time = 0; // used in mode 1
+  static float duplicate_extruder_x_offset = DEFAULT_DUPLICATION_X_OFFSET; // used in mode 2
+  static float duplicate_extruder_temp_offset = 0; // used in mode 2
+  bool extruder_duplication_enabled = false; // used in mode 2
 
-static float inactive_extruder_x_pos = X2_MAX_POS; // used in mode 0 & 1
-static bool active_extruder_parked = false; // used in mode 1 & 2
-static float raised_parked_position[NUM_AXIS]; // used in mode 1
-static unsigned long delayed_move_time = 0; // used in mode 1
-static float duplicate_extruder_x_offset = DEFAULT_DUPLICATION_X_OFFSET; // used in mode 2
-static float duplicate_extruder_temp_offset = 0; // used in mode 2
-bool extruder_duplication_enabled = false; // used in mode 2
 #endif //DUAL_X_CARRIAGE
 
 static void axis_is_at_home(int axis) {
       return;
     }
     else if (dual_x_carriage_mode == DXC_DUPLICATION_MODE && active_extruder == 0) {
-      current_position[X_AXIS] = base_home_pos(X_AXIS) + add_homing[X_AXIS];
-      min_pos[X_AXIS] =          base_min_pos(X_AXIS) + add_homing[X_AXIS];
-      max_pos[X_AXIS] =          min(base_max_pos(X_AXIS) + add_homing[X_AXIS],
+      current_position[X_AXIS] = base_home_pos(X_AXIS) + home_offset[X_AXIS];
+      min_pos[X_AXIS] =          base_min_pos(X_AXIS) + home_offset[X_AXIS];
+      max_pos[X_AXIS] =          min(base_max_pos(X_AXIS) + home_offset[X_AXIS],
                                   max(extruder_offset[X_AXIS][1], X2_MAX_POS) - duplicate_extruder_x_offset);
       return;
     }
      
      for (i=0; i<2; i++)
      {
-        delta[i] -= add_homing[i];
+        delta[i] -= home_offset[i];
      } 
      
-    // SERIAL_ECHOPGM("addhome X="); SERIAL_ECHO(add_homing[X_AXIS]);
-  // SERIAL_ECHOPGM(" addhome Y="); SERIAL_ECHO(add_homing[Y_AXIS]);
+    // SERIAL_ECHOPGM("addhome X="); SERIAL_ECHO(home_offset[X_AXIS]);
+  // SERIAL_ECHOPGM(" addhome Y="); SERIAL_ECHO(home_offset[Y_AXIS]);
     // SERIAL_ECHOPGM(" addhome Theta="); SERIAL_ECHO(delta[X_AXIS]);
     // SERIAL_ECHOPGM(" addhome Psi+Theta="); SERIAL_ECHOLN(delta[Y_AXIS]);
       
    } 
    else
    {
-      current_position[axis] = base_home_pos(axis) + add_homing[axis];
-      min_pos[axis] =          base_min_pos(axis) + add_homing[axis];
-      max_pos[axis] =          base_max_pos(axis) + add_homing[axis];
+      current_position[axis] = base_home_pos(axis) + home_offset[axis];
+      min_pos[axis] =          base_min_pos(axis) + home_offset[axis];
+      max_pos[axis] =          base_max_pos(axis) + home_offset[axis];
    }
 #else
-  current_position[axis] = base_home_pos(axis) + add_homing[axis];
-  min_pos[axis] =          base_min_pos(axis) + add_homing[axis];
-  max_pos[axis] =          base_max_pos(axis) + add_homing[axis];
+  current_position[axis] = base_home_pos(axis) + home_offset[axis];
+  min_pos[axis] =          base_min_pos(axis) + home_offset[axis];
+  max_pos[axis] =          base_max_pos(axis) + home_offset[axis];
 #endif
 }
 
 static void retract_z_probe() {
   // Retract Z Servo endstop if enabled
   #ifdef SERVO_ENDSTOPS
-    if (servo_endstops[Z_AXIS] > -1) {
+    if (servo_endstops[Z_AXIS] > -1)
+    {
+      #if Z_RAISE_AFTER_PROBING > 0
+        do_blocking_move_to(current_position[X_AXIS], current_position[Y_AXIS], Z_RAISE_AFTER_PROBING);
+        st_synchronize();
+      #endif
+    
       #if SERVO_LEVELING
         servos[servo_endstops[Z_AXIS]].attach(0);
       #endif
   #elif defined(Z_PROBE_ALLEN_KEY)
     // Move up for safety
     feedrate = homing_feedrate[X_AXIS];
-    destination[Z_AXIS] = current_position[Z_AXIS] + 20;
+    destination[Z_AXIS] = current_position[Z_AXIS] + Z_RAISE_AFTER_PROBING;
     prepare_move_raw();
 
     // Move to the start position to initiate retraction
 
 }
 
-enum ProbeAction { ProbeStay, ProbeEngage, ProbeRetract, ProbeEngageRetract };
+enum ProbeAction {
+  ProbeStay             = 0,
+  ProbeEngage           = BIT(0),
+  ProbeRetract          = BIT(1),
+  ProbeEngageAndRetract = (ProbeEngage | ProbeRetract)
+};
 
 /// Probe bed height at position (x,y), returns the measured z value
-static float probe_pt(float x, float y, float z_before, ProbeAction retract_action=ProbeEngageRetract, int verbose_level=1) {
+static float probe_pt(float x, float y, float z_before, ProbeAction retract_action=ProbeEngageAndRetract, int verbose_level=1) {
   // move to right place
   do_blocking_move_to(current_position[X_AXIS], current_position[Y_AXIS], z_before);
   do_blocking_move_to(x - X_PROBE_OFFSET_FROM_EXTRUDER, y - Y_PROBE_OFFSET_FROM_EXTRUDER, current_position[Z_AXIS]);
     #endif
   #endif
 
+  #if defined(MESH_BED_LEVELING)
+    uint8_t mbl_was_active = mbl.active;
+    mbl.active = 0;
+  #endif  // MESH_BED_LEVELING
+
   saved_feedrate = feedrate;
   saved_feedmultiply = feedmultiply;
   feedmultiply = 100;
       if (code_value_long() != 0) {
           current_position[X_AXIS] = code_value()
             #ifndef SCARA
-              + add_homing[X_AXIS]
+              + home_offset[X_AXIS]
             #endif
           ;
       }
     if (code_seen(axis_codes[Y_AXIS]) && code_value_long() != 0) {
       current_position[Y_AXIS] = code_value()
         #ifndef SCARA
-          + add_homing[Y_AXIS]
+          + home_offset[Y_AXIS]
         #endif
       ;
     }
 
 
     if (code_seen(axis_codes[Z_AXIS]) && code_value_long() != 0)
-      current_position[Z_AXIS] = code_value() + add_homing[Z_AXIS];
+      current_position[Z_AXIS] = code_value() + home_offset[Z_AXIS];
 
     #ifdef ENABLE_AUTO_BED_LEVELING
       if (home_all_axis || code_seen(axis_codes[Z_AXIS]))
     enable_endstops(false);
   #endif
 
+  #if defined(MESH_BED_LEVELING)
+    if (mbl_was_active) {
+      current_position[X_AXIS] = mbl.get_x(0);
+      current_position[Y_AXIS] = mbl.get_y(0);
+      destination[X_AXIS] = current_position[X_AXIS];
+      destination[Y_AXIS] = current_position[Y_AXIS];
+      destination[Z_AXIS] = current_position[Z_AXIS];
+      destination[E_AXIS] = current_position[E_AXIS];
+      feedrate = homing_feedrate[X_AXIS];
+      plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], feedrate, active_extruder);
+      st_synchronize();
+      current_position[Z_AXIS] = MESH_HOME_SEARCH_Z;
+      plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]);
+      mbl.active = 1;
+    }
+  #endif
+
   feedrate = saved_feedrate;
   feedmultiply = saved_feedmultiply;
   previous_millis_cmd = millis();
   endstops_hit_on_purpose();
 }
 
-#ifdef ENABLE_AUTO_BED_LEVELING
+#if defined(MESH_BED_LEVELING)
 
-  // Define the possible boundaries for probing based on set limits
-  #define MIN_PROBE_X (max(X_MIN_POS, X_MIN_POS + X_PROBE_OFFSET_FROM_EXTRUDER))
-  #define MAX_PROBE_X (min(X_MAX_POS, X_MAX_POS + X_PROBE_OFFSET_FROM_EXTRUDER))
-  #define MIN_PROBE_Y (max(Y_MIN_POS, Y_MIN_POS + Y_PROBE_OFFSET_FROM_EXTRUDER))
-  #define MAX_PROBE_Y (min(Y_MAX_POS, Y_MAX_POS + Y_PROBE_OFFSET_FROM_EXTRUDER))
+  inline void gcode_G29() {
+    static int probe_point = -1;
+    int state = 0;
+    if (code_seen('S') || code_seen('s')) {
+      state = code_value_long();
+      if (state < 0 || state > 2) {
+        SERIAL_PROTOCOLPGM("S out of range (0-2).\n");
+        return;
+      }
+    }
 
-  #ifdef AUTO_BED_LEVELING_GRID
+    if (state == 0) { // Dump mesh_bed_leveling
+      if (mbl.active) {
+        SERIAL_PROTOCOLPGM("Num X,Y: ");
+        SERIAL_PROTOCOL(MESH_NUM_X_POINTS);
+        SERIAL_PROTOCOLPGM(",");
+        SERIAL_PROTOCOL(MESH_NUM_Y_POINTS);
+        SERIAL_PROTOCOLPGM("\nZ search height: ");
+        SERIAL_PROTOCOL(MESH_HOME_SEARCH_Z);
+        SERIAL_PROTOCOLPGM("\nMeasured points:\n");              
+        for (int y=0; y<MESH_NUM_Y_POINTS; y++) {
+          for (int x=0; x<MESH_NUM_X_POINTS; x++) {
+            SERIAL_PROTOCOLPGM("  ");              
+            SERIAL_PROTOCOL_F(mbl.z_values[y][x], 5);
+          }
+          SERIAL_EOL;
+        }
+      } else {
+        SERIAL_PROTOCOLPGM("Mesh bed leveling not active.\n");
+      }
 
-    // Make sure probing points are reachable
+    } else if (state == 1) { // Begin probing mesh points
 
-    #if LEFT_PROBE_BED_POSITION < MIN_PROBE_X
-      #error "The given LEFT_PROBE_BED_POSITION can't be reached by the probe."
-    #elif RIGHT_PROBE_BED_POSITION > MAX_PROBE_X
-      #error "The given RIGHT_PROBE_BED_POSITION can't be reached by the probe."
-    #elif FRONT_PROBE_BED_POSITION < MIN_PROBE_Y
-      #error "The given FRONT_PROBE_BED_POSITION can't be reached by the probe."
-    #elif BACK_PROBE_BED_POSITION > MAX_PROBE_Y
-      #error "The given BACK_PROBE_BED_POSITION can't be reached by the probe."
-    #endif
+      mbl.reset();
+      probe_point = 0;
+      enquecommands_P(PSTR("G28"));
+      enquecommands_P(PSTR("G29 S2"));
 
-  #else // !AUTO_BED_LEVELING_GRID
-
-    #if ABL_PROBE_PT_1_X < MIN_PROBE_X || ABL_PROBE_PT_1_X > MAX_PROBE_X
-      #error "The given ABL_PROBE_PT_1_X can't be reached by the probe."
-    #elif ABL_PROBE_PT_2_X < MIN_PROBE_X || ABL_PROBE_PT_2_X > MAX_PROBE_X
-      #error "The given ABL_PROBE_PT_2_X can't be reached by the probe."
-    #elif ABL_PROBE_PT_3_X < MIN_PROBE_X || ABL_PROBE_PT_3_X > MAX_PROBE_X
-      #error "The given ABL_PROBE_PT_3_X can't be reached by the probe."
-    #elif ABL_PROBE_PT_1_Y < MIN_PROBE_Y || ABL_PROBE_PT_1_Y > MAX_PROBE_Y
-      #error "The given ABL_PROBE_PT_1_Y can't be reached by the probe."
-    #elif ABL_PROBE_PT_2_Y < MIN_PROBE_Y || ABL_PROBE_PT_2_Y > MAX_PROBE_Y
-      #error "The given ABL_PROBE_PT_2_Y can't be reached by the probe."
-    #elif ABL_PROBE_PT_3_Y < MIN_PROBE_Y || ABL_PROBE_PT_3_Y > MAX_PROBE_Y
-      #error "The given ABL_PROBE_PT_3_Y can't be reached by the probe."
-    #endif
+    } else if (state == 2) { // Goto next point
+
+      if (probe_point < 0) {
+        SERIAL_PROTOCOLPGM("Mesh probing not started.\n");
+        return;
+      }
+      int ix, iy;
+      if (probe_point == 0) {
+        current_position[Z_AXIS] = MESH_HOME_SEARCH_Z;
+        plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]);
+      } else {
+        ix = (probe_point-1) % MESH_NUM_X_POINTS;
+        iy = (probe_point-1) / MESH_NUM_X_POINTS;
+        if (iy&1) { // Zig zag
+          ix = (MESH_NUM_X_POINTS - 1) - ix;
+        }
+        mbl.set_z(ix, iy, current_position[Z_AXIS]);
+        current_position[Z_AXIS] = MESH_HOME_SEARCH_Z;
+        plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], homing_feedrate[X_AXIS]/60, active_extruder);
+        st_synchronize();
+      }
+      if (probe_point == MESH_NUM_X_POINTS*MESH_NUM_Y_POINTS) {
+        SERIAL_PROTOCOLPGM("Mesh done.\n");
+        probe_point = -1;
+        mbl.active = 1;
+        enquecommands_P(PSTR("G28"));
+        return;
+      }
+      ix = probe_point % MESH_NUM_X_POINTS;
+      iy = probe_point / MESH_NUM_X_POINTS;
+      if (iy&1) { // Zig zag
+        ix = (MESH_NUM_X_POINTS - 1) - ix;
+      }
+      current_position[X_AXIS] = mbl.get_x(ix);
+      current_position[Y_AXIS] = mbl.get_y(iy);
+      plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], homing_feedrate[X_AXIS]/60, active_extruder);
+      st_synchronize();
+      probe_point++;
+    }
+  }
+
+#endif
 
-  #endif // !AUTO_BED_LEVELING_GRID
+#ifdef ENABLE_AUTO_BED_LEVELING
 
   /**
    * G29: Detailed Z-Probe, probes the bed at 3 or more points.
     #ifdef AUTO_BED_LEVELING_GRID
 
     #ifndef DELTA
-      bool topo_flag = verbose_level > 2 || code_seen('T') || code_seen('t');
+      bool do_topography_map = verbose_level > 2 || code_seen('T') || code_seen('t');
     #endif
 
       if (verbose_level > 0)
 
     #ifdef Z_PROBE_SLED
       dock_sled(false); // engage (un-dock) the probe
-    #elif not defined(SERVO_ENDSTOPS)
+    #elif defined(Z_PROBE_ALLEN_KEY)
       engage_z_probe();
     #endif
 
     st_synchronize();
 
-  #ifdef DELTA
-    reset_bed_level();
-  #else
+    #ifdef DELTA
+      reset_bed_level();
+    #else
+
     // make sure the bed_level_rotation_matrix is identity or the planner will get it incorectly
     //vector_3 corrected_position = plan_get_position_mm();
     //corrected_position.debug("position before G29");
       delta_grid_spacing[1] = yGridSpacing;
 
       float z_offset = Z_PROBE_OFFSET_FROM_EXTRUDER;
-      if (code_seen(axis_codes[Z_AXIS])) {
-        z_offset += code_value();
-      }
+      if (code_seen(axis_codes[Z_AXIS])) z_offset += code_value();
     #endif
 
       int probePointCounter = 0;
       bool zig = true;
 
-      for (int yCount=0; yCount < auto_bed_leveling_grid_points; yCount++)
-      {
+      for (int yCount = 0; yCount < auto_bed_leveling_grid_points; yCount++) {
         double yProbe = front_probe_bed_position + yGridSpacing * yCount;
         int xStart, xStop, xInc;
 
-        if (zig)
-        {
+        if (zig) {
           xStart = 0;
           xStop = auto_bed_leveling_grid_points;
           xInc = 1;
           zig = false;
         }
-        else
-        {
+        else {
           xStart = auto_bed_leveling_grid_points - 1;
           xStop = -1;
           xInc = -1;
           zig = true;
         }
 
-      #ifndef DELTA
-        // If topo_flag is set then don't zig-zag. Just scan in one direction.
-        // This gets the probe points in more readable order.
-        if (!topo_flag) zig = !zig;
-      #endif
+        #ifndef DELTA
+          // If do_topography_map is set then don't zig-zag. Just scan in one direction.
+          // This gets the probe points in more readable order.
+          if (!do_topography_map) zig = !zig;
+        #endif
 
-        for (int xCount=xStart; xCount != xStop; xCount += xInc)
-        {
+        for (int xCount = xStart; xCount != xStop; xCount += xInc) {
           double xProbe = left_probe_bed_position + xGridSpacing * xCount;
 
           // raise extruder
               act = ProbeStay;
           }
           else
-            act = ProbeEngageRetract;
+            act = ProbeEngageAndRetract;
 
           measured_z = probe_pt(xProbe, yProbe, z_before, act, verbose_level);
 
         }
       }
 
-      if (topo_flag) {
-
-        int xx, yy;
+      // Show the Topography map if enabled
+      if (do_topography_map) {
 
         SERIAL_PROTOCOLPGM(" \nBed Height Topography: \n");
-        #if TOPO_ORIGIN == OriginFrontLeft
-          SERIAL_PROTOCOLPGM("+-----------+\n");
-          SERIAL_PROTOCOLPGM("|...Back....|\n");
-          SERIAL_PROTOCOLPGM("|Left..Right|\n");
-          SERIAL_PROTOCOLPGM("|...Front...|\n");
-          SERIAL_PROTOCOLPGM("+-----------+\n");
-          for (yy = auto_bed_leveling_grid_points - 1; yy >= 0; yy--)
-        #else
-          for (yy = 0; yy < auto_bed_leveling_grid_points; yy++)
-        #endif
-          {
-            #if TOPO_ORIGIN == OriginBackRight
-              for (xx = 0; xx < auto_bed_leveling_grid_points; xx++)
-            #else
-              for (xx = auto_bed_leveling_grid_points - 1; xx >= 0; xx--)
-            #endif
-              {
-                int ind =
-                  #if TOPO_ORIGIN == OriginBackRight || TOPO_ORIGIN == OriginFrontLeft
-                    yy * auto_bed_leveling_grid_points + xx
-                  #elif TOPO_ORIGIN == OriginBackLeft
-                    xx * auto_bed_leveling_grid_points + yy
-                  #elif TOPO_ORIGIN == OriginFrontRight
-                    abl2 - xx * auto_bed_leveling_grid_points - yy - 1
-                  #endif
-                ;
-                float diff = eqnBVector[ind] - mean;
-                if (diff >= 0.0)
-                  SERIAL_PROTOCOLPGM(" +");   // Include + for column alignment
-                else
-                  SERIAL_PROTOCOLPGM(" ");
-                SERIAL_PROTOCOL_F(diff, 5);
-              } // xx
-              SERIAL_EOL;
-          } // yy
+        SERIAL_PROTOCOLPGM("+-----------+\n");
+        SERIAL_PROTOCOLPGM("|...Back....|\n");
+        SERIAL_PROTOCOLPGM("|Left..Right|\n");
+        SERIAL_PROTOCOLPGM("|...Front...|\n");
+        SERIAL_PROTOCOLPGM("+-----------+\n");
+
+        for (int yy = auto_bed_leveling_grid_points - 1; yy >= 0; yy--) {
+          for (int xx = auto_bed_leveling_grid_points - 1; xx >= 0; xx--) {
+            int ind = yy * auto_bed_leveling_grid_points + xx;
+            float diff = eqnBVector[ind] - mean;
+            if (diff >= 0.0)
+              SERIAL_PROTOCOLPGM(" +");   // Include + for column alignment
+            else
+              SERIAL_PROTOCOLPGM(" ");
+            SERIAL_PROTOCOL_F(diff, 5);
+          } // xx
           SERIAL_EOL;
+        } // yy
+        SERIAL_EOL;
 
-      } //topo_flag
+      } //do_topography_map
 
 
       set_bed_level_equation_lsq(plane_equation_coefficients);
         z_at_pt_3 = probe_pt(ABL_PROBE_PT_3_X, ABL_PROBE_PT_3_Y, current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS, ProbeRetract, verbose_level);
       }
       else {
-        z_at_pt_1 = probe_pt(ABL_PROBE_PT_1_X, ABL_PROBE_PT_1_Y, Z_RAISE_BEFORE_PROBING, verbose_level=verbose_level);
-        z_at_pt_2 = probe_pt(ABL_PROBE_PT_2_X, ABL_PROBE_PT_2_Y, current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS, verbose_level=verbose_level);
-        z_at_pt_3 = probe_pt(ABL_PROBE_PT_3_X, ABL_PROBE_PT_3_Y, current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS, verbose_level=verbose_level);
+        z_at_pt_1 = probe_pt(ABL_PROBE_PT_1_X, ABL_PROBE_PT_1_Y, Z_RAISE_BEFORE_PROBING, ProbeEngageAndRetract, verbose_level);
+        z_at_pt_2 = probe_pt(ABL_PROBE_PT_2_X, ABL_PROBE_PT_2_Y, current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS, ProbeEngageAndRetract, verbose_level);
+        z_at_pt_3 = probe_pt(ABL_PROBE_PT_3_X, ABL_PROBE_PT_3_Y, current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS, ProbeEngageAndRetract, verbose_level);
       }
       clean_up_after_endstop_move();
       set_bed_level_equation_3pts(z_at_pt_1, z_at_pt_2, z_at_pt_3);
 
     #endif // !AUTO_BED_LEVELING_GRID
 
-    do_blocking_move_to(current_position[X_AXIS], current_position[Y_AXIS], Z_RAISE_AFTER_PROBING);
-    st_synchronize();
-
   #ifndef DELTA
     if (verbose_level > 0)
       plan_bed_level_matrix.debug(" \n\nBed Level Correction Matrix:");
 
   #ifdef Z_PROBE_SLED
     dock_sled(true, -SLED_DOCKING_OFFSET); // dock the probe, correcting for over-travel
-  #elif not defined(SERVO_ENDSTOPS)
+  #elif defined(Z_PROBE_ALLEN_KEY)
     retract_z_probe();
   #endif
     
   if (!code_seen(axis_codes[E_AXIS]))
     st_synchronize();
 
-  for (int i=0;i<NUM_AXIS;i++) {
+  for (int i = 0; i < NUM_AXIS; i++) {
     if (code_seen(axis_codes[i])) {
-      if (i == E_AXIS) {
-        current_position[i] = code_value();
+      current_position[i] = code_value();
+      if (i == E_AXIS)
         plan_set_e_position(current_position[E_AXIS]);
-      }
-      else {
-        current_position[i] = code_value() +
-          #ifdef SCARA
-            ((i != X_AXIS && i != Y_AXIS) ? add_homing[i] : 0)
-          #else
-            add_homing[i]
-          #endif
-        ;
+      else
         plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]);
-      }
     }
   }
 }
     SERIAL_PROTOCOLLN("");
     
     SERIAL_PROTOCOLPGM("SCARA Cal - Theta:");
-    SERIAL_PROTOCOL(delta[X_AXIS]+add_homing[X_AXIS]);
+    SERIAL_PROTOCOL(delta[X_AXIS]+home_offset[X_AXIS]);
     SERIAL_PROTOCOLPGM("   Psi+Theta (90):");
-    SERIAL_PROTOCOL(delta[Y_AXIS]-delta[X_AXIS]-90+add_homing[Y_AXIS]);
+    SERIAL_PROTOCOL(delta[Y_AXIS]-delta[X_AXIS]-90+home_offset[Y_AXIS]);
     SERIAL_PROTOCOLLN("");
     
     SERIAL_PROTOCOLPGM("SCARA step Cal - Theta:");
 inline void gcode_M206() {
   for (int8_t i=X_AXIS; i <= Z_AXIS; i++) {
     if (code_seen(axis_codes[i])) {
-      add_homing[i] = code_value();
+      home_offset[i] = code_value();
     }
   }
   #ifdef SCARA
-    if (code_seen('T')) add_homing[X_AXIS] = code_value(); // Theta
-    if (code_seen('P')) add_homing[Y_AXIS] = code_value(); // Psi
+    if (code_seen('T')) home_offset[X_AXIS] = code_value(); // Theta
+    if (code_seen('P')) home_offset[Y_AXIS] = code_value(); // Psi
   #endif
 }
 
 }
 
 #ifdef SCARA
-
-  /**
-   * M360: SCARA calibration: Move to cal-position ThetaA (0 deg calibration)
-   */
-  inline bool gcode_M360() {
-    SERIAL_ECHOLN(" Cal: Theta 0 ");
+  bool SCARA_move_to_cal(uint8_t delta_x, uint8_t delta_y) {
     //SoftEndsEnabled = false;              // Ignore soft endstops during calibration
     //SERIAL_ECHOLN(" Soft endstops disabled ");
     if (! Stopped) {
       //get_coordinates(); // For X Y Z E F
-      delta[X_AXIS] = 0;
-      delta[Y_AXIS] = 120;
+      delta[X_AXIS] = delta_x;
+      delta[Y_AXIS] = delta_y;
       calculate_SCARA_forward_Transform(delta);
       destination[X_AXIS] = delta[X_AXIS]/axis_scaling[X_AXIS];
       destination[Y_AXIS] = delta[Y_AXIS]/axis_scaling[Y_AXIS];
   }
 
   /**
+   * M360: SCARA calibration: Move to cal-position ThetaA (0 deg calibration)
+   */
+  inline bool gcode_M360() {
+    SERIAL_ECHOLN(" Cal: Theta 0 ");
+    return SCARA_move_to_cal(0, 120);
+  }
+
+  /**
    * M361: SCARA calibration: Move to cal-position ThetaB (90 deg calibration - steps per degree)
    */
   inline bool gcode_M361() {
     SERIAL_ECHOLN(" Cal: Theta 90 ");
-    //SoftEndsEnabled = false;              // Ignore soft endstops during calibration
-    //SERIAL_ECHOLN(" Soft endstops disabled ");
-    if (! Stopped) {
-      //get_coordinates(); // For X Y Z E F
-      delta[X_AXIS] = 90;
-      delta[Y_AXIS] = 130;
-      calculate_SCARA_forward_Transform(delta);
-      destination[X_AXIS] = delta[X_AXIS]/axis_scaling[X_AXIS];
-      destination[Y_AXIS] = delta[Y_AXIS]/axis_scaling[Y_AXIS];
-      prepare_move();
-      //ClearToSend();
-      return true;
-    }
-    return false;
+    return SCARA_move_to_cal(90, 130);
   }
 
   /**
    */
   inline bool gcode_M362() {
     SERIAL_ECHOLN(" Cal: Psi 0 ");
-    //SoftEndsEnabled = false;              // Ignore soft endstops during calibration
-    //SERIAL_ECHOLN(" Soft endstops disabled ");
-    if (! Stopped) {
-      //get_coordinates(); // For X Y Z E F
-      delta[X_AXIS] = 60;
-      delta[Y_AXIS] = 180;
-      calculate_SCARA_forward_Transform(delta);
-      destination[X_AXIS] = delta[X_AXIS]/axis_scaling[X_AXIS];
-      destination[Y_AXIS] = delta[Y_AXIS]/axis_scaling[Y_AXIS];
-      prepare_move();
-      //ClearToSend();
-      return true;
-    }
-    return false;
+    return SCARA_move_to_cal(60, 180);
   }
 
   /**
    */
   inline bool gcode_M363() {
     SERIAL_ECHOLN(" Cal: Psi 90 ");
-    //SoftEndsEnabled = false;              // Ignore soft endstops during calibration
-    //SERIAL_ECHOLN(" Soft endstops disabled ");
-    if (! Stopped) {
-      //get_coordinates(); // For X Y Z E F
-      delta[X_AXIS] = 50;
-      delta[Y_AXIS] = 90;
-      calculate_SCARA_forward_Transform(delta);
-      destination[X_AXIS] = delta[X_AXIS]/axis_scaling[X_AXIS];
-      destination[Y_AXIS] = delta[Y_AXIS]/axis_scaling[Y_AXIS];
-      prepare_move();
-      //ClearToSend();
-      return true;
-    }
-    return false;
+    return SCARA_move_to_cal(50, 90);
   }
 
   /**
    */
   inline bool gcode_M364() {
     SERIAL_ECHOLN(" Cal: Theta-Psi 90 ");
-   // SoftEndsEnabled = false;              // Ignore soft endstops during calibration
-    //SERIAL_ECHOLN(" Soft endstops disabled ");
-    if (! Stopped) {
-      //get_coordinates(); // For X Y Z E F
-      delta[X_AXIS] = 45;
-      delta[Y_AXIS] = 135;
-      calculate_SCARA_forward_Transform(delta);
-      destination[X_AXIS] = delta[X_AXIS] / axis_scaling[X_AXIS];
-      destination[Y_AXIS] = delta[Y_AXIS] / axis_scaling[Y_AXIS];
-      prepare_move();
-      //ClearToSend();
-      return true;
-    }
-    return false;
+    return SCARA_move_to_cal(45, 135);
   }
 
   /**
       gcode_G28();
       break;
 
+    #if defined(MESH_BED_LEVELING)
+      case 29: // G29 Handle mesh based leveling
+        gcode_G29();
+        break;
+    #endif
+
     #ifdef ENABLE_AUTO_BED_LEVELING
 
       case 29: // G29 Detailed Z-Probe, probes the bed at 3 or more points.
     float negative_z_offset = 0;
     #ifdef ENABLE_AUTO_BED_LEVELING
       if (Z_PROBE_OFFSET_FROM_EXTRUDER < 0) negative_z_offset = negative_z_offset + Z_PROBE_OFFSET_FROM_EXTRUDER;
-      if (add_homing[Z_AXIS] < 0) negative_z_offset = negative_z_offset + add_homing[Z_AXIS];
+      if (home_offset[Z_AXIS] < 0) negative_z_offset = negative_z_offset + home_offset[Z_AXIS];
     #endif
     
     if (target[Z_AXIS] < min_pos[Z_AXIS]+negative_z_offset) target[Z_AXIS] = min_pos[Z_AXIS]+negative_z_offset;
 }
 #endif //DELTA
 
+#if defined(MESH_BED_LEVELING)
+#if !defined(MIN)
+#define MIN(_v1, _v2) (((_v1) < (_v2)) ? (_v1) : (_v2))
+#endif  // ! MIN
+// This function is used to split lines on mesh borders so each segment is only part of one mesh area
+void mesh_plan_buffer_line(float x, float y, float z, const float e, float feed_rate, const uint8_t &extruder, uint8_t x_splits=0xff, uint8_t y_splits=0xff)
+{
+  if (!mbl.active) {
+    plan_buffer_line(x, y, z, e, feed_rate, extruder);
+    for(int8_t i=0; i < NUM_AXIS; i++) {
+      current_position[i] = destination[i];
+    }
+    return;
+  }
+  int pix = mbl.select_x_index(current_position[X_AXIS]);
+  int piy = mbl.select_y_index(current_position[Y_AXIS]);
+  int ix = mbl.select_x_index(x);
+  int iy = mbl.select_y_index(y);
+  pix = MIN(pix, MESH_NUM_X_POINTS-2);
+  piy = MIN(piy, MESH_NUM_Y_POINTS-2);
+  ix = MIN(ix, MESH_NUM_X_POINTS-2);
+  iy = MIN(iy, MESH_NUM_Y_POINTS-2);
+  if (pix == ix && piy == iy) {
+    // Start and end on same mesh square
+    plan_buffer_line(x, y, z, e, feed_rate, extruder);
+    for(int8_t i=0; i < NUM_AXIS; i++) {
+      current_position[i] = destination[i];
+    }
+    return;
+  }
+  float nx, ny, ne, normalized_dist;
+  if (ix > pix && (x_splits) & BIT(ix)) {
+    nx = mbl.get_x(ix);
+    normalized_dist = (nx - current_position[X_AXIS])/(x - current_position[X_AXIS]);
+    ny = current_position[Y_AXIS] + (y - current_position[Y_AXIS]) * normalized_dist;
+    ne = current_position[E_AXIS] + (e - current_position[E_AXIS]) * normalized_dist;
+    x_splits ^= BIT(ix);
+  } else if (ix < pix && (x_splits) & BIT(pix)) {
+    nx = mbl.get_x(pix);
+    normalized_dist = (nx - current_position[X_AXIS])/(x - current_position[X_AXIS]);
+    ny = current_position[Y_AXIS] + (y - current_position[Y_AXIS]) * normalized_dist;
+    ne = current_position[E_AXIS] + (e - current_position[E_AXIS]) * normalized_dist;
+    x_splits ^= BIT(pix);
+  } else if (iy > piy && (y_splits) & BIT(iy)) {
+    ny = mbl.get_y(iy);
+    normalized_dist = (ny - current_position[Y_AXIS])/(y - current_position[Y_AXIS]);
+    nx = current_position[X_AXIS] + (x - current_position[X_AXIS]) * normalized_dist;
+    ne = current_position[E_AXIS] + (e - current_position[E_AXIS]) * normalized_dist;
+    y_splits ^= BIT(iy);
+  } else if (iy < piy && (y_splits) & BIT(piy)) {
+    ny = mbl.get_y(piy);
+    normalized_dist = (ny - current_position[Y_AXIS])/(y - current_position[Y_AXIS]);
+    nx = current_position[X_AXIS] + (x - current_position[X_AXIS]) * normalized_dist;
+    ne = current_position[E_AXIS] + (e - current_position[E_AXIS]) * normalized_dist;
+    y_splits ^= BIT(piy);
+  } else {
+    // Already split on a border
+    plan_buffer_line(x, y, z, e, feed_rate, extruder);
+    for(int8_t i=0; i < NUM_AXIS; i++) {
+      current_position[i] = destination[i];
+    }
+    return;
+  }
+  // Do the split and look for more borders
+  destination[X_AXIS] = nx;
+  destination[Y_AXIS] = ny;
+  destination[E_AXIS] = ne;
+  mesh_plan_buffer_line(nx, ny, z, ne, feed_rate, extruder, x_splits, y_splits);
+  destination[X_AXIS] = x;
+  destination[Y_AXIS] = y;
+  destination[E_AXIS] = e;
+  mesh_plan_buffer_line(x, y, z, e, feed_rate, extruder, x_splits, y_splits);
+}
+#endif  // MESH_BED_LEVELING
+
 void prepare_move()
 {
   clamp_to_software_endstops(destination);
 #if ! (defined DELTA || defined SCARA)
   // Do not use feedmultiply for E or Z only moves
   if( (current_position[X_AXIS] == destination [X_AXIS]) && (current_position[Y_AXIS] == destination [Y_AXIS])) {
-      plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], feedrate/60, active_extruder);
-  }
-  else {
+    plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], feedrate/60, active_extruder);
+  } else {
+#if defined(MESH_BED_LEVELING)
+    mesh_plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], feedrate*feedmultiply/60/100.0, active_extruder);
+    return;
+#else
     plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], feedrate*feedmultiply/60/100.0, active_extruder);
+#endif  // MESH_BED_LEVELING
   }
 #endif // !(DELTA || SCARA)
 

Marlin/SanityCheck.h

+/**
+ * SanityCheck.h
+ *
+ * Test configuration values for errors at compile-time.
+ */
+#ifndef SANITYCHECK_H
+  #define SANITYCHECK_H
+
+  /**
+   * Dual Stepper Drivers
+   */
+  #if defined(Z_DUAL_STEPPER_DRIVERS) && defined(Y_DUAL_STEPPER_DRIVERS)
+    #error You cannot have dual stepper drivers for both Y and Z.
+  #endif
+
+  /**
+   * Progress Bar
+   */
+  #ifdef LCD_PROGRESS_BAR
+    #ifdef DOGLCD
+      #warning LCD_PROGRESS_BAR does not apply to graphical displays.
+    #endif
+    #ifdef FILAMENT_LCD_DISPLAY
+      #error LCD_PROGRESS_BAR and FILAMENT_LCD_DISPLAY are not fully compatible. Comment out this line to use both.
+    #endif
+  #endif
+
+  /**
+   * Babystepping
+   */
+  #ifdef BABYSTEPPING
+    #ifdef COREXY
+      #error BABYSTEPPING not implemented for COREXY yet.
+    #endif
+    #ifdef SCARA
+      #error BABYSTEPPING is not implemented for SCARA yet.
+    #endif
+    #if defined(DELTA) && defined(BABYSTEP_XY)
+      #error BABYSTEPPING only implemented for Z axis on deltabots.
+    #endif
+  #endif
+
+  /**
+   * Filament Change with Extruder Runout Prevention
+   */
+  #if defined(FILAMENTCHANGEENABLE) && defined(EXTRUDER_RUNOUT_PREVENT)
+    #error EXTRUDER_RUNOUT_PREVENT currently incompatible with FILAMENTCHANGE.
+  #endif
+
+  /**
+   * Options only for EXTRUDERS == 1
+   */
+  #if EXTRUDERS > 1
+
+    #if EXTRUDERS > 4
+      #error The maximum number of EXTRUDERS is 4.
+    #endif
+
+    #ifdef TEMP_SENSOR_1_AS_REDUNDANT
+      #error EXTRUDERS must be 1 with TEMP_SENSOR_1_AS_REDUNDANT.
+    #endif
+
+    #ifdef HEATERS_PARALLEL
+      #error EXTRUDERS must be 1 with HEATERS_PARALLEL.
+    #endif
+
+    #ifdef Y_DUAL_STEPPER_DRIVERS
+      #error EXTRUDERS must be 1 with Y_DUAL_STEPPER_DRIVERS.
+    #endif
+
+    #ifdef Z_DUAL_STEPPER_DRIVERS
+      #error EXTRUDERS must be 1 with Z_DUAL_STEPPER_DRIVERS.
+    #endif
+
+  #endif // EXTRUDERS > 1
+
+  /**
+   * Required LCD language
+   */
+  #if !defined(DOGLCD) && defined(ULTRA_LCD) && !defined(DISPLAY_CHARSET_HD44780_JAPAN) && !defined(DISPLAY_CHARSET_HD44780_WESTERN)
+    #error You must enable either DISPLAY_CHARSET_HD44780_JAPAN or DISPLAY_CHARSET_HD44780_WESTERN for your LCD controller.
+  #endif
+
+  /**
+   * Auto Bed Leveling
+   */
+  #ifdef ENABLE_AUTO_BED_LEVELING
+
+    /**
+     * Require a Z Min pin
+     */
+    #if Z_MIN_PIN == -1
+      #ifdef Z_PROBE_REPEATABILITY_TEST
+        #error You must have a Z_MIN endstop to enable Z_PROBE_REPEATABILITY_TEST.
+      #else
+        #error ENABLE_AUTO_BED_LEVELING requires a Z_MIN endstop. Z_MIN_PIN must point to a valid hardware pin.
+      #endif
+    #endif
+
+    /**
+     * Check if Probe_Offset * Grid Points is greater than Probing Range
+     */
+    #ifdef AUTO_BED_LEVELING_GRID
+
+      // Make sure probing points are reachable
+      #if LEFT_PROBE_BED_POSITION < MIN_PROBE_X
+        #error The given LEFT_PROBE_BED_POSITION can't be reached by the probe.
+      #elif RIGHT_PROBE_BED_POSITION > MAX_PROBE_X
+        #error The given RIGHT_PROBE_BED_POSITION can't be reached by the probe.
+      #elif FRONT_PROBE_BED_POSITION < MIN_PROBE_Y
+        #error The given FRONT_PROBE_BED_POSITION can't be reached by the probe.
+      #elif BACK_PROBE_BED_POSITION > MAX_PROBE_Y
+        #error The given BACK_PROBE_BED_POSITION can't be reached by the probe.
+      #endif
+
+      #define PROBE_SIZE_X (X_PROBE_OFFSET_FROM_EXTRUDER * (AUTO_BED_LEVELING_GRID_POINTS-1))
+      #define PROBE_SIZE_Y (Y_PROBE_OFFSET_FROM_EXTRUDER * (AUTO_BED_LEVELING_GRID_POINTS-1))
+      #define PROBE_AREA_WIDTH (RIGHT_PROBE_BED_POSITION - LEFT_PROBE_BED_POSITION)
+      #define PROBE_AREA_DEPTH (BACK_PROBE_BED_POSITION - FRONT_PROBE_BED_POSITION)
+      #if X_PROBE_OFFSET_FROM_EXTRUDER < 0
+        #if PROBE_SIZE_X <= -PROBE_AREA_WIDTH
+          #define X_PROBE_ERROR
+        #endif
+      #elif PROBE_SIZE_X >= PROBE_AREA_WIDTH
+        #define X_PROBE_ERROR
+      #endif
+      #ifdef X_PROBE_ERROR
+        #error The X axis probing range is too small to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS
+      #endif
+      #if Y_PROBE_OFFSET_FROM_EXTRUDER < 0
+        #if PROBE_SIZE_Y <= -PROBE_AREA_DEPTH
+          #define Y_PROBE_ERROR
+        #endif
+      #elif PROBE_SIZE_Y >= PROBE_AREA_DEPTH
+        #define Y_PROBE_ERROR
+      #endif
+      #ifdef Y_PROBE_ERROR
+        #error The Y axis probing range is to small to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS
+      #endif
+
+      #undef PROBE_SIZE_X
+      #undef PROBE_SIZE_Y
+      #undef PROBE_AREA_WIDTH
+      #undef PROBE_AREA_DEPTH
+
+    #else // !AUTO_BED_LEVELING_GRID
+
+      // Check the triangulation points
+      #if ABL_PROBE_PT_1_X < MIN_PROBE_X || ABL_PROBE_PT_1_X > MAX_PROBE_X
+        #error "The given ABL_PROBE_PT_1_X can't be reached by the probe."
+      #elif ABL_PROBE_PT_2_X < MIN_PROBE_X || ABL_PROBE_PT_2_X > MAX_PROBE_X
+        #error "The given ABL_PROBE_PT_2_X can't be reached by the probe."
+      #elif ABL_PROBE_PT_3_X < MIN_PROBE_X || ABL_PROBE_PT_3_X > MAX_PROBE_X
+        #error "The given ABL_PROBE_PT_3_X can't be reached by the probe."
+      #elif ABL_PROBE_PT_1_Y < MIN_PROBE_Y || ABL_PROBE_PT_1_Y > MAX_PROBE_Y
+        #error "The given ABL_PROBE_PT_1_Y can't be reached by the probe."
+      #elif ABL_PROBE_PT_2_Y < MIN_PROBE_Y || ABL_PROBE_PT_2_Y > MAX_PROBE_Y
+        #error "The given ABL_PROBE_PT_2_Y can't be reached by the probe."
+      #elif ABL_PROBE_PT_3_Y < MIN_PROBE_Y || ABL_PROBE_PT_3_Y > MAX_PROBE_Y
+        #error "The given ABL_PROBE_PT_3_Y can't be reached by the probe."
+      #endif
+
+    #endif // !AUTO_BED_LEVELING_GRID
+
+  #endif // ENABLE_AUTO_BED_LEVELING
+
+  /**
+   * ULTIPANEL encoder
+   */
+  #if defined(ULTIPANEL) && !defined(NEWPANEL) && !defined(SR_LCD_2W_NL) && !defined(SHIFT_CLK)
+    #error ULTIPANEL requires some kind of encoder.
+  #endif
+
+  /**
+   * Delta has limited bed leveling options
+   */
+  #ifdef DELTA
+
+    #ifdef ENABLE_AUTO_BED_LEVELING
+
+      #ifndef AUTO_BED_LEVELING_GRID
+        #error Only AUTO_BED_LEVELING_GRID is supported with DELTA.
+      #endif
+
+      #ifdef Z_PROBE_SLED
+        #error You cannot use Z_PROBE_SLED with DELTA.
+      #endif
+
+      #ifdef Z_PROBE_REPEATABILITY_TEST
+        #error Z_PROBE_REPEATABILITY_TEST is not supported with DELTA yet.
+      #endif
+
+    #endif
+
+  #endif
+
+  /**
+   * Allen Key Z Probe requires Auto Bed Leveling grid and Delta
+   */
+  #if defined(Z_PROBE_ALLEN_KEY) && !(defined(AUTO_BED_LEVELING_GRID) && defined(DELTA))
+    #error Invalid use of Z_PROBE_ALLEN_KEY.
+  #endif
+
+  /**
+   * Dual X Carriage requirements
+   */
+  #ifdef DUAL_X_CARRIAGE
+    #if EXTRUDERS == 1 || defined(COREXY) \
+        || !defined(X2_ENABLE_PIN) || !defined(X2_STEP_PIN) || !defined(X2_DIR_PIN) \
+        || !defined(X2_HOME_POS) || !defined(X2_MIN_POS) || !defined(X2_MAX_POS) \
+        || !defined(X_MAX_PIN) || X_MAX_PIN < 0
+      #error Missing or invalid definitions for DUAL_X_CARRIAGE mode.
+    #endif
+    #if X_HOME_DIR != -1 || X2_HOME_DIR != 1
+      #error Please use canonical x-carriage assignment.
+    #endif
+  #endif // DUAL_X_CARRIAGE
+
+  /**
+   * Make sure auto fan pins don't conflict with the fan pin
+   */
+  #if HAS_AUTO_FAN && HAS_FAN
+    #if EXTRUDER_0_AUTO_FAN_PIN == FAN_PIN
+      #error You cannot set EXTRUDER_0_AUTO_FAN_PIN equal to FAN_PIN
+    #elif EXTRUDER_1_AUTO_FAN_PIN == FAN_PIN
+      #error You cannot set EXTRUDER_1_AUTO_FAN_PIN equal to FAN_PIN
+    #elif EXTRUDER_2_AUTO_FAN_PIN == FAN_PIN
+      #error You cannot set EXTRUDER_2_AUTO_FAN_PIN equal to FAN_PIN
+    #elif EXTRUDER_3_AUTO_FAN_PIN == FAN_PIN
+      #error You cannot set EXTRUDER_3_AUTO_FAN_PIN equal to FAN_PIN
+    #endif
+  #endif
+
+  /**
+   * Test required HEATER defines
+   */
+  #if EXTRUDERS > 3
+    #if !HAS_HEATER_3
+      #error HEATER_3_PIN not defined for this board
+    #endif
+  #elif EXTRUDERS > 2
+    #if !HAS_HEATER_2
+      #error HEATER_2_PIN not defined for this board
+    #endif
+  #elif EXTRUDERS > 1 || defined(HEATERS_PARALLEL)
+    #if !HAS_HEATER_1
+      #error HEATER_1_PIN not defined for this board
+    #endif
+  #endif
+  #if !HAS_HEATER_0
+    #error HEATER_0_PIN not defined for this board
+  #endif
+
+#endif //SANITYCHECK_H

Marlin/Sd2PinMap.h

   uint8_t bit;
 };
 //------------------------------------------------------------------------------
-#if defined(__AVR_ATmega1280__)\
-|| defined(__AVR_ATmega2560__)
-// Mega
+#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__) // Mega
 
 // Two Wire (aka I2C) ports
 uint8_t const SDA_PIN = 20;  // D1
 
 #undef MOSI_PIN
 #undef MISO_PIN
+#undef SCK_PIN
 // SPI port
 uint8_t const SS_PIN = 53;    // B0
 uint8_t const MOSI_PIN = 51;  // B2

Marlin/configurator/config/Configuration.h

   // #define ENDSTOPPULLUP_ZMIN
 #endif
 
-#ifdef ENDSTOPPULLUPS
-  #define ENDSTOPPULLUP_XMAX
-  #define ENDSTOPPULLUP_YMAX
-  #define ENDSTOPPULLUP_ZMAX
-  #define ENDSTOPPULLUP_XMIN
-  #define ENDSTOPPULLUP_YMIN
-  #define ENDSTOPPULLUP_ZMIN
-#endif
-
 // The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
 const bool X_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
 const bool Y_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
 #define Y_MAX_POS 205
 #define Z_MAX_POS 200
 
-// @section hidden
+//===========================================================================
+//============================= Filament Runout Sensor ======================
+//===========================================================================
+//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
+                                 // In RAMPS uses servo pin 2. Can be changed in pins file. For other boards pin definition should be made.
+                                 // It is assumed that when logic high = filament available
+                                 //                    when logic  low = filament ran out
+//const bool FIL_RUNOUT_INVERTING = true;  // Should be uncommented and true or false should assigned
+//#define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
+
+//===========================================================================
+//============================ Manual Bed Leveling ==========================
+//===========================================================================
 
-#define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS)
-#define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS)
-#define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)
+// #define MANUAL_BED_LEVELING  // Add display menu option for bed leveling
+// #define MESH_BED_LEVELING    // Enable mesh bed leveling
 
+#if defined(MESH_BED_LEVELING)
+  #define MESH_MIN_X 10
+  #define MESH_MAX_X (X_MAX_POS - MESH_MIN_X)
+  #define MESH_MIN_Y 10
+  #define MESH_MAX_Y (Y_MAX_POS - MESH_MIN_Y)
+  #define MESH_NUM_X_POINTS 3  // Don't use more than 7 points per axis, implementation limited
+  #define MESH_NUM_Y_POINTS 3
+  #define MESH_HOME_SEARCH_Z 4  // Z after Home, bed somewhere below but above 0.0
+#endif  // MESH_BED_LEVELING
 
 //===========================================================================
 //============================= Bed Auto Leveling ===========================
 
   #ifdef AUTO_BED_LEVELING_GRID
 
-    // Use one of these defines to specify the origin
-    // for a topographical map to be printed for your bed.
-    enum { OriginBackLeft, OriginFrontLeft, OriginBackRight, OriginFrontRight };
-    #define TOPO_ORIGIN OriginFrontLeft
-
-    // The edges of the rectangle in which to probe
     #define LEFT_PROBE_BED_POSITION 15
     #define RIGHT_PROBE_BED_POSITION 170
     #define FRONT_PROBE_BED_POSITION 20
 // REMEMBER TO INSTALL LiquidCrystal_I2C.h in your ARDUINO library folder: https://github.com/kiyoshigawa/LiquidCrystal_I2C
 //#define RA_CONTROL_PANEL
 
-// @section hidden
-
-//automatic expansion
-#if defined (MAKRPANEL)
- #define DOGLCD
- #define SDSUPPORT
- #define ULTIPANEL
- #define NEWPANEL
- #define DEFAULT_LCD_CONTRAST 17
-#endif
-
-#if defined(miniVIKI) || defined(VIKI2)
- #define ULTRA_LCD  //general LCD support, also 16x2
- #define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
- #define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
- 
-  #ifdef miniVIKI
-   #define DEFAULT_LCD_CONTRAST 95
-  #else
-   #define DEFAULT_LCD_CONTRAST 40
-  #endif
-  
- #define ENCODER_PULSES_PER_STEP 4
- #define ENCODER_STEPS_PER_MENU_ITEM 1
-#endif
-
-#if defined (PANEL_ONE)
- #define SDSUPPORT
- #define ULTIMAKERCONTROLLER
-#endif
-
-#if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
- #define DOGLCD
- #define U8GLIB_ST7920
- #define REPRAP_DISCOUNT_SMART_CONTROLLER
-#endif
-
-#if defined(ULTIMAKERCONTROLLER) || defined(REPRAP_DISCOUNT_SMART_CONTROLLER) || defined(G3D_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
-#endif
-
-#if defined(REPRAPWORLD_KEYPAD)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
-#if defined(RA_CONTROL_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
- #define LCD_I2C_TYPE_PCA8574
- #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-#endif
-
-//I2C PANELS
+/**
+ * I2C Panels
+ */
 
 //#define LCD_I2C_SAINSMART_YWROBOT
-#ifdef LCD_I2C_SAINSMART_YWROBOT
-  // This uses the LiquidCrystal_I2C library ( https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home )
-  // Make sure it is placed in the Arduino libraries directory.
-  #define LCD_I2C_TYPE_PCF8575
-  #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
 //#define LCD_I2C_PANELOLU2
-#ifdef LCD_I2C_PANELOLU2
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
-  // Note: The PANELOLU2 encoder click input can either be directly connected to a pin
-  //       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
-  #define NEWPANEL
-  #define ULTIPANEL
-
-  #ifndef ENCODER_PULSES_PER_STEP
-	#define ENCODER_PULSES_PER_STEP 4
-  #endif
-
-  #ifndef ENCODER_STEPS_PER_MENU_ITEM
-	#define ENCODER_STEPS_PER_MENU_ITEM 1
-  #endif
-
-
-  #ifdef LCD_USE_I2C_BUZZER
-	#define LCD_FEEDBACK_FREQUENCY_HZ 1000
-	#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100
-  #endif
-
-#endif
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
 //#define LCD_I2C_VIKI
-#ifdef LCD_I2C_VIKI
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // Note: The pause/stop/resume LCD button pin should be connected to the Arduino
-  //       BTN_ENC pin (or set BTN_ENC to -1 if not used)
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD (requires LiquidTWI2 v1.2.3 or later)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // Shift register panels
 // ---------------------
 // https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection 
 
 //#define SAV_3DLCD
-#ifdef SAV_3DLCD
-   #define SR_LCD_2W_NL    // Non latching 2 wire shiftregister
-   #define NEWPANEL
-   #define ULTIPANEL
-#endif
-
-
-#ifdef ULTIPANEL
-//  #define NEWPANEL  //enable this if you have a click-encoder panel
-  #define SDSUPPORT
-  #define ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the DOG graphic display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 20
-    #define LCD_HEIGHT 4
-  #endif
-#else //no panel but just LCD
-  #ifdef ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 16
-    #define LCD_HEIGHT 2
-  #endif
-  #endif
-#endif
-
-// @section lcd
-
-// default LCD contrast for dogm-like LCD displays
-#ifdef DOGLCD
-# ifndef DEFAULT_LCD_CONTRAST
-#  define DEFAULT_LCD_CONTRAST 32
-# endif
-#endif
 
 // @section extras
 
 // Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
 //#define FAST_PWM_FAN
 
-// Temperature status LEDs that display the hotend and bet temperature.
-// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
-// Otherwise the RED led is on. There is 1C hysteresis.
-//#define TEMP_STAT_LEDS
-
 // Use software PWM to drive the fan, as for the heaters. This uses a very low frequency
 // which is not ass annoying as with the hardware PWM. On the other hand, if this frequency
 // is too low, you should also increment SOFT_PWM_SCALE.
 // at zero value, there are 128 effective control positions.
 #define SOFT_PWM_SCALE 0
 
+// Temperature status LEDs that display the hotend and bet temperature.
+// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
+// Otherwise the RED led is on. There is 1C hysteresis.
+//#define TEMP_STAT_LEDS
+
 // M240  Triggers a camera by emulating a Canon RC-1 Remote
 // Data from: http://www.doc-diy.net/photo/rc-1_hacked/
 // #define PHOTOGRAPH_PIN     23
 #include "Configuration_adv.h"
 #include "thermistortables.h"
 
-#endif //__CONFIGURATION_H
+#endif //CONFIGURATION_H

Marlin/configurator/config/Configuration_adv.h

 #ifndef CONFIGURATION_ADV_H
 #define CONFIGURATION_ADV_H
 
+#include "Conditionals.h"
+
 // @section temperature
 
 //===========================================================================
 
 #define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing
 
-
-// @section hidden
-
-
-//// AUTOSET LOCATIONS OF LIMIT SWITCHES
-//// Added by ZetaPhoenix 09-15-2012
-#ifdef MANUAL_HOME_POSITIONS  // Use manual limit switch locations
-  #define X_HOME_POS MANUAL_X_HOME_POS
-  #define Y_HOME_POS MANUAL_Y_HOME_POS
-  #define Z_HOME_POS MANUAL_Z_HOME_POS
-#else //Set min/max homing switch positions based upon homing direction and min/max travel limits
-  //X axis
-  #if X_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * -0.5
-    #else
-      #define X_HOME_POS X_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * 0.5
-    #else
-      #define X_HOME_POS X_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //X_HOME_DIR == -1
-
-  //Y axis
-  #if Y_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * -0.5
-    #else
-      #define Y_HOME_POS Y_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * 0.5
-    #else
-      #define Y_HOME_POS Y_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //Y_HOME_DIR == -1
-
-  // Z axis
-  #if Z_HOME_DIR == -1 //BED_CENTER_AT_0_0 not used
-    #define Z_HOME_POS Z_MIN_POS
-  #else
-    #define Z_HOME_POS Z_MAX_POS
-  #endif //Z_HOME_DIR == -1
-#endif //End auto min/max positions
-//END AUTOSET LOCATIONS OF LIMIT SWITCHES -ZP
-
 // @section extras
 
 //#define Z_LATE_ENABLE // Enable Z the last moment. Needed if your Z driver overheats.
 // On a RAMPS (or other 5 driver) motherboard, using this feature will limit you to using 1 extruder.
 //#define Z_DUAL_STEPPER_DRIVERS
 
-#ifdef Z_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
 // Same again but for Y Axis.
 //#define Y_DUAL_STEPPER_DRIVERS
 
 // Define if the two Y drives need to rotate in opposite directions
 #define INVERT_Y2_VS_Y_DIR true
 
-#ifdef Y_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
-#if defined (Z_DUAL_STEPPER_DRIVERS) && defined (Y_DUAL_STEPPER_DRIVERS)
-  #error "You cannot have dual drivers for both Y and Z"
-#endif
-
 // Enable this for dual x-carriage printers.
 // A dual x-carriage design has the advantage that the inactive extruder can be parked which
 // prevents hot-end ooze contaminating the print. It also reduces the weight of each x-carriage
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// @section hidden
-
-#ifdef CONFIG_STEPPERS_TOSHIBA
-  #define MAX_STEP_FREQUENCY 10000 // Max step frequency for Toshiba Stepper Controllers
-#else
-  #define MAX_STEP_FREQUENCY 40000 // Max step frequency for Ultimaker (5000 pps / half step)
-#endif
-
 // @section machine
 
 //By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_Z_STEP_PIN false
 #define INVERT_E_STEP_PIN false
 
-//default stepper release if idle. Set to 0 to deactivate.
+// Default stepper release if idle. Set to 0 to deactivate.
 #define DEFAULT_STEPPER_DEACTIVE_TIME 60
 
 #define DEFAULT_MINIMUMFEEDRATE       0.0     // minimum feedrate
 
 // @section lcd
 
-// Feedrates for manual moves along X, Y, Z, E from panel
 #ifdef ULTIPANEL
-#define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60}  // set the speeds for manual moves (mm/min)
-#endif
-
-//Comment to disable setting feedrate multiplier via encoder
-#ifdef ULTIPANEL
-    #define ULTIPANEL_FEEDMULTIPLY
+  #define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60} // Feedrates for manual moves along X, Y, Z, E from panel
+  #define ULTIPANEL_FEEDMULTIPLY  // Comment to disable setting feedrate multiplier via encoder
 #endif
 
 // @section extras
 // if unwanted behavior is observed on a user's machine when running at very slow speeds.
 #define MINIMUM_PLANNER_SPEED 0.05// (mm/sec)
 
-// MS1 MS2 Stepper Driver Microstepping mode table
-#define MICROSTEP1 LOW,LOW
-#define MICROSTEP2 HIGH,LOW
-#define MICROSTEP4 LOW,HIGH
-#define MICROSTEP8 HIGH,HIGH
-#define MICROSTEP16 HIGH,HIGH
-
 // Microstep setting (Only functional when stepper driver microstep pins are connected to MCU.
 #define MICROSTEP_MODES {16,16,16,16,16} // [1,2,4,8,16]
 
   #define PROGRESS_MSG_EXPIRE   0
   // Enable this to show messages for MSG_TIME then hide them
   //#define PROGRESS_MSG_ONCE
-  #ifdef DOGLCD
-    #warning LCD_PROGRESS_BAR does not apply to graphical displays at this time.
-  #endif
-  #ifdef FILAMENT_LCD_DISPLAY
-    #error LCD_PROGRESS_BAR and FILAMENT_LCD_DISPLAY are not fully compatible. Comment out this line to use both.
-  #endif
 #endif
 
 // @section more
   #define BABYSTEP_XY  //not only z, but also XY in the menu. more clutter, more functions
   #define BABYSTEP_INVERT_Z false  //true for inverse movements in Z
   #define BABYSTEP_Z_MULTIPLICATOR 2 //faster z movements
-
-  #ifdef COREXY
-    #error BABYSTEPPING not implemented for COREXY yet.
-  #endif
-
-  #ifdef DELTA
-    #ifdef BABYSTEP_XY
-      #error BABYSTEPPING only implemented for Z axis on deltabots.
-    #endif
-  #endif
 #endif
 
 // extruder advance constant (s2/mm3)
 // be commented out otherwise
 #define SDCARDDETECTINVERTED
 
-// @section hidden
-
-#ifdef ULTIPANEL
- #undef SDCARDDETECTINVERTED
-#endif
-
-// Power Signal Control Definitions
-// By default use ATX definition
-#ifndef POWER_SUPPLY
-  #define POWER_SUPPLY 1
-#endif
-// 1 = ATX
-#if (POWER_SUPPLY == 1)
-  #define PS_ON_AWAKE  LOW
-  #define PS_ON_ASLEEP HIGH
-#endif
-// 2 = X-Box 360 203W
-#if (POWER_SUPPLY == 2)
-  #define PS_ON_AWAKE  HIGH
-  #define PS_ON_ASLEEP LOW
-#endif
-
 // @section temperature
 
 // Control heater 0 and heater 1 in parallel.
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-//adds support for experimental filament exchange support M600; requires display
+// Add support for experimental filament exchange support M600; requires display
 #ifdef ULTIPANEL
-  #define FILAMENTCHANGEENABLE
+  //#define FILAMENTCHANGEENABLE
   #ifdef FILAMENTCHANGEENABLE
     #define FILAMENTCHANGE_XPOS 3
     #define FILAMENTCHANGE_YPOS 3
   #endif
 #endif
 
-#ifdef FILAMENTCHANGEENABLE
-  #ifdef EXTRUDER_RUNOUT_PREVENT
-    #error EXTRUDER_RUNOUT_PREVENT currently incompatible with FILAMENTCHANGE
-  #endif
-#endif
-
-//===========================================================================
-//=============================  Define Defines  ============================
-//===========================================================================
-
-// @section hidden
-
-#if defined (ENABLE_AUTO_BED_LEVELING) && defined (DELTA)
-  #error "Bed Auto Leveling is still not compatible with Delta Kinematics."
-#endif
-
-#if EXTRUDERS > 1 && defined TEMP_SENSOR_1_AS_REDUNDANT
-  #error "You cannot use TEMP_SENSOR_1_AS_REDUNDANT if EXTRUDERS > 1"
-#endif
-
-#if EXTRUDERS > 1 && defined HEATERS_PARALLEL
-  #error "You cannot use HEATERS_PARALLEL if EXTRUDERS > 1"
-#endif
-
-#if TEMP_SENSOR_0 > 0
-  #define THERMISTORHEATER_0 TEMP_SENSOR_0
-  #define HEATER_0_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_1 > 0
-  #define THERMISTORHEATER_1 TEMP_SENSOR_1
-  #define HEATER_1_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_2 > 0
-  #define THERMISTORHEATER_2 TEMP_SENSOR_2
-  #define HEATER_2_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_3 > 0
-  #define THERMISTORHEATER_3 TEMP_SENSOR_3
-  #define HEATER_3_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_BED > 0
-  #define THERMISTORBED TEMP_SENSOR_BED
-  #define BED_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_0 == -1
-  #define HEATER_0_USES_AD595
-#endif
-#if TEMP_SENSOR_1 == -1
-  #define HEATER_1_USES_AD595
-#endif
-#if TEMP_SENSOR_2 == -1
-  #define HEATER_2_USES_AD595
-#endif
-#if TEMP_SENSOR_3 == -1
-  #define HEATER_3_USES_AD595
-#endif
-#if TEMP_SENSOR_BED == -1
-  #define BED_USES_AD595
-#endif
-#if TEMP_SENSOR_0 == -2
-  #define HEATER_0_USES_MAX6675
-#endif
-#if TEMP_SENSOR_0 == 0
-  #undef HEATER_0_MINTEMP
-  #undef HEATER_0_MAXTEMP
-#endif
-#if TEMP_SENSOR_1 == 0
-  #undef HEATER_1_MINTEMP
-  #undef HEATER_1_MAXTEMP
-#endif
-#if TEMP_SENSOR_2 == 0
-  #undef HEATER_2_MINTEMP
-  #undef HEATER_2_MAXTEMP
-#endif
-#if TEMP_SENSOR_3 == 0
-  #undef HEATER_3_MINTEMP
-  #undef HEATER_3_MAXTEMP
-#endif
-#if TEMP_SENSOR_BED == 0
-  #undef BED_MINTEMP
-  #undef BED_MAXTEMP
-#endif
-
+#include "Conditionals.h"
+#include "SanityCheck.h"
 
-#endif //__CONFIGURATION_ADV_H
+#endif //CONFIGURATION_ADV_H

Marlin/example_configurations/Felix/Configuration.h

   // #define ENDSTOPPULLUP_ZMIN
 #endif
 
-#ifdef ENDSTOPPULLUPS
-  #define ENDSTOPPULLUP_XMAX
-  #define ENDSTOPPULLUP_YMAX
-  #define ENDSTOPPULLUP_ZMAX
-  #define ENDSTOPPULLUP_XMIN
-  #define ENDSTOPPULLUP_YMIN
-  #define ENDSTOPPULLUP_ZMIN
-#endif
-
 // The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
 const bool X_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
 const bool Y_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
 #define Z_MAX_POS 235
 #define Z_MIN_POS 0
 
-#define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS)
-#define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS)
-#define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)
+//===========================================================================
+//============================= Filament Runout Sensor ======================
+//===========================================================================
+//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
+                                 // In RAMPS uses servo pin 2. Can be changed in pins file. For other boards pin definition should be made.
+                                 // It is assumed that when logic high = filament available
+                                 //                    when logic  low = filament ran out
+//const bool FIL_RUNOUT_INVERTING = true;  // Should be uncommented and true or false should assigned
+//#define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
+
+//===========================================================================
+//============================ Manual Bed Leveling ==========================
+//===========================================================================
 
+// #define MANUAL_BED_LEVELING  // Add display menu option for bed leveling
+// #define MESH_BED_LEVELING    // Enable mesh bed leveling
+
+#if defined(MESH_BED_LEVELING)
+  #define MESH_MIN_X 10
+  #define MESH_MAX_X (X_MAX_POS - MESH_MIN_X)
+  #define MESH_MIN_Y 10
+  #define MESH_MAX_Y (Y_MAX_POS - MESH_MIN_Y)
+  #define MESH_NUM_X_POINTS 3  // Don't use more than 7 points per axis, implementation limited
+  #define MESH_NUM_Y_POINTS 3
+  #define MESH_HOME_SEARCH_Z 4  // Z after Home, bed somewhere below but above 0.0
+#endif  // MESH_BED_LEVELING
 
 //===========================================================================
 //============================= Bed Auto Leveling ===========================
   // Note: this feature occupies 10'206 byte
   #ifdef AUTO_BED_LEVELING_GRID
 
-    // Use one of these defines to specify the origin
-    // for a topographical map to be printed for your bed.
-    enum { OriginBackLeft, OriginFrontLeft, OriginBackRight, OriginFrontRight };
-    #define TOPO_ORIGIN OriginFrontLeft
-
-    // set the rectangle in which to probe
     #define LEFT_PROBE_BED_POSITION 15
     #define RIGHT_PROBE_BED_POSITION 170
     #define BACK_PROBE_BED_POSITION 180
 
   #endif
 
-  #ifdef AUTO_BED_LEVELING_GRID	// Check if Probe_Offset * Grid Points is greater than Probing Range
-    #if X_PROBE_OFFSET_FROM_EXTRUDER < 0
-      #if (-(X_PROBE_OFFSET_FROM_EXTRUDER * (AUTO_BED_LEVELING_GRID_POINTS-1)) >= (RIGHT_PROBE_BED_POSITION - LEFT_PROBE_BED_POSITION))
-	     #error "The X axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
-	  #endif
-	#else
-      #if ((X_PROBE_OFFSET_FROM_EXTRUDER * (AUTO_BED_LEVELING_GRID_POINTS-1)) >= (RIGHT_PROBE_BED_POSITION - LEFT_PROBE_BED_POSITION))
-	     #error "The X axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
-	  #endif
-	#endif
-    #if Y_PROBE_OFFSET_FROM_EXTRUDER < 0
-      #if (-(Y_PROBE_OFFSET_FROM_EXTRUDER * (AUTO_BED_LEVELING_GRID_POINTS-1)) >= (BACK_PROBE_BED_POSITION - FRONT_PROBE_BED_POSITION))
-	     #error "The Y axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
-	  #endif
-	#else
-      #if ((Y_PROBE_OFFSET_FROM_EXTRUDER * (AUTO_BED_LEVELING_GRID_POINTS-1)) >= (BACK_PROBE_BED_POSITION - FRONT_PROBE_BED_POSITION))
-	     #error "The Y axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
-	  #endif
-	#endif
-
-
-  #endif
-
 #endif // ENABLE_AUTO_BED_LEVELING
 
 
 // REMEMBER TO INSTALL LiquidCrystal_I2C.h in your ARDUINO library folder: https://github.com/kiyoshigawa/LiquidCrystal_I2C
 //#define RA_CONTROL_PANEL
 
-//automatic expansion
-#if defined (MAKRPANEL)
- #define DOGLCD
- #define SDSUPPORT
- #define ULTIPANEL
- #define NEWPANEL
- #define DEFAULT_LCD_CONTRAST 17
-#endif
-
-#if defined(miniVIKI) || defined(VIKI2)
- #define ULTRA_LCD  //general LCD support, also 16x2
- #define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
- #define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
-
-  #ifdef miniVIKI
-   #define DEFAULT_LCD_CONTRAST 95
-  #else
-   #define DEFAULT_LCD_CONTRAST 40
-  #endif
-
- #define ENCODER_PULSES_PER_STEP 4
- #define ENCODER_STEPS_PER_MENU_ITEM 1
-#endif
-
-#if defined (PANEL_ONE)
- #define SDSUPPORT
- #define ULTIMAKERCONTROLLER
-#endif
-
-#if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
- #define DOGLCD
- #define U8GLIB_ST7920
- #define REPRAP_DISCOUNT_SMART_CONTROLLER
-#endif
-
-#if defined(ULTIMAKERCONTROLLER) || defined(REPRAP_DISCOUNT_SMART_CONTROLLER) || defined(G3D_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
-#endif
-
-#if defined(REPRAPWORLD_KEYPAD)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
-#if defined(RA_CONTROL_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
- #define LCD_I2C_TYPE_PCA8574
- #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-#endif
-
-//I2C PANELS
+/**
+ * I2C Panels
+ */
 
 //#define LCD_I2C_SAINSMART_YWROBOT
-#ifdef LCD_I2C_SAINSMART_YWROBOT
-  // This uses the LiquidCrystal_I2C library ( https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home )
-  // Make sure it is placed in the Arduino libraries directory.
-  #define LCD_I2C_TYPE_PCF8575
-  #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
 //#define LCD_I2C_PANELOLU2
-#ifdef LCD_I2C_PANELOLU2
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
-  // Note: The PANELOLU2 encoder click input can either be directly connected to a pin
-  //       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
-  #define NEWPANEL
-  #define ULTIPANEL
-
-  #ifndef ENCODER_PULSES_PER_STEP
-	#define ENCODER_PULSES_PER_STEP 4
-  #endif
-
-  #ifndef ENCODER_STEPS_PER_MENU_ITEM
-	#define ENCODER_STEPS_PER_MENU_ITEM 1
-  #endif
-
-
-  #ifdef LCD_USE_I2C_BUZZER
-	#define LCD_FEEDBACK_FREQUENCY_HZ 1000
-	#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100
-  #endif
-
-#endif
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
 //#define LCD_I2C_VIKI
-#ifdef LCD_I2C_VIKI
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // Note: The pause/stop/resume LCD button pin should be connected to the Arduino
-  //       BTN_ENC pin (or set BTN_ENC to -1 if not used)
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD (requires LiquidTWI2 v1.2.3 or later)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // Shift register panels
 // ---------------------
 // https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection
 
 //#define SAV_3DLCD
-#ifdef SAV_3DLCD
-   #define SR_LCD_2W_NL    // Non latching 2 wire shiftregister
-   #define NEWPANEL
-   #define ULTIPANEL
-#endif
-
-
-#ifdef ULTIPANEL
-  #define NEWPANEL  //enable this if you have a click-encoder panel
-  #define SDSUPPORT
-  #define ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the DOG graphic display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 20
-    #define LCD_HEIGHT 4
-  #endif
-#else //no panel but just LCD
-  #ifdef ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 16
-    #define LCD_HEIGHT 2
-  #endif
-  #endif
-#endif
-
-// default LCD contrast for dogm-like LCD displays
-#ifdef DOGLCD
-# ifndef DEFAULT_LCD_CONTRAST
-#  define DEFAULT_LCD_CONTRAST 32
-# endif
-#endif
 
 // Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
 #define FAST_PWM_FAN
 //#define FILAMENT_LCD_DISPLAY
 
 
+
+
+
+
 #include "Configuration_adv.h"
 #include "thermistortables.h"
 
-#endif //__CONFIGURATION_H
+#endif //CONFIGURATION_H

Marlin/example_configurations/Felix/Configuration_DUAL.h

   // #define ENDSTOPPULLUP_ZMIN
 #endif
 
-#ifdef ENDSTOPPULLUPS
-  #define ENDSTOPPULLUP_XMAX
-  #define ENDSTOPPULLUP_YMAX
-  #define ENDSTOPPULLUP_ZMAX
-  #define ENDSTOPPULLUP_XMIN
-  #define ENDSTOPPULLUP_YMIN
-  #define ENDSTOPPULLUP_ZMIN
-#endif
-
 // The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
 const bool X_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
 const bool Y_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
 #define Z_MAX_POS 235
 #define Z_MIN_POS 0
 
-#define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS)
-#define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS)
-#define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)
+//===========================================================================
+//============================= Filament Runout Sensor ======================
+//===========================================================================
+//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
+                                 // In RAMPS uses servo pin 2. Can be changed in pins file. For other boards pin definition should be made.
+                                 // It is assumed that when logic high = filament available
+                                 //                    when logic  low = filament ran out
+//const bool FIL_RUNOUT_INVERTING = true;  // Should be uncommented and true or false should assigned
+//#define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
+
+//===========================================================================
+//============================ Manual Bed Leveling ==========================
+//===========================================================================
 
+// #define MANUAL_BED_LEVELING  // Add display menu option for bed leveling
+// #define MESH_BED_LEVELING    // Enable mesh bed leveling
+
+#if defined(MESH_BED_LEVELING)
+  #define MESH_MIN_X 10
+  #define MESH_MAX_X (X_MAX_POS - MESH_MIN_X)
+  #define MESH_MIN_Y 10
+  #define MESH_MAX_Y (Y_MAX_POS - MESH_MIN_Y)
+  #define MESH_NUM_X_POINTS 3  // Don't use more than 7 points per axis, implementation limited
+  #define MESH_NUM_Y_POINTS 3
+  #define MESH_HOME_SEARCH_Z 4  // Z after Home, bed somewhere below but above 0.0
+#endif  // MESH_BED_LEVELING
 
 //===========================================================================
 //============================= Bed Auto Leveling ===========================
   // Note: this feature occupies 10'206 byte
   #ifdef AUTO_BED_LEVELING_GRID
 
-    // Use one of these defines to specify the origin
-    // for a topographical map to be printed for your bed.
-    enum { OriginBackLeft, OriginFrontLeft, OriginBackRight, OriginFrontRight };
-    #define TOPO_ORIGIN OriginFrontLeft
-
-    // set the rectangle in which to probe
     #define LEFT_PROBE_BED_POSITION 15
     #define RIGHT_PROBE_BED_POSITION 170
     #define BACK_PROBE_BED_POSITION 180
 
   #endif
 
-  #ifdef AUTO_BED_LEVELING_GRID	// Check if Probe_Offset * Grid Points is greater than Probing Range
-    #if X_PROBE_OFFSET_FROM_EXTRUDER < 0
-      #if (-(X_PROBE_OFFSET_FROM_EXTRUDER * (AUTO_BED_LEVELING_GRID_POINTS-1)) >= (RIGHT_PROBE_BED_POSITION - LEFT_PROBE_BED_POSITION))
-	     #error "The X axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
-	  #endif
-	#else
-      #if ((X_PROBE_OFFSET_FROM_EXTRUDER * (AUTO_BED_LEVELING_GRID_POINTS-1)) >= (RIGHT_PROBE_BED_POSITION - LEFT_PROBE_BED_POSITION))
-	     #error "The X axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
-	  #endif
-	#endif
-    #if Y_PROBE_OFFSET_FROM_EXTRUDER < 0
-      #if (-(Y_PROBE_OFFSET_FROM_EXTRUDER * (AUTO_BED_LEVELING_GRID_POINTS-1)) >= (BACK_PROBE_BED_POSITION - FRONT_PROBE_BED_POSITION))
-	     #error "The Y axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
-	  #endif
-	#else
-      #if ((Y_PROBE_OFFSET_FROM_EXTRUDER * (AUTO_BED_LEVELING_GRID_POINTS-1)) >= (BACK_PROBE_BED_POSITION - FRONT_PROBE_BED_POSITION))
-	     #error "The Y axis probing range is not enough to fit all the points defined in AUTO_BED_LEVELING_GRID_POINTS"
-	  #endif
-	#endif
-
-
-  #endif
-
 #endif // ENABLE_AUTO_BED_LEVELING
 
 
 // REMEMBER TO INSTALL LiquidCrystal_I2C.h in your ARDUINO library folder: https://github.com/kiyoshigawa/LiquidCrystal_I2C
 //#define RA_CONTROL_PANEL
 
-//automatic expansion
-#if defined (MAKRPANEL)
- #define DOGLCD
- #define SDSUPPORT
- #define ULTIPANEL
- #define NEWPANEL
- #define DEFAULT_LCD_CONTRAST 17
-#endif
-
-#if defined(miniVIKI) || defined(VIKI2)
- #define ULTRA_LCD  //general LCD support, also 16x2
- #define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
- #define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
-
-  #ifdef miniVIKI
-   #define DEFAULT_LCD_CONTRAST 95
-  #else
-   #define DEFAULT_LCD_CONTRAST 40
-  #endif
-
- #define ENCODER_PULSES_PER_STEP 4
- #define ENCODER_STEPS_PER_MENU_ITEM 1
-#endif
-
-#if defined (PANEL_ONE)
- #define SDSUPPORT
- #define ULTIMAKERCONTROLLER
-#endif
-
-#if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
- #define DOGLCD
- #define U8GLIB_ST7920
- #define REPRAP_DISCOUNT_SMART_CONTROLLER
-#endif
-
-#if defined(ULTIMAKERCONTROLLER) || defined(REPRAP_DISCOUNT_SMART_CONTROLLER) || defined(G3D_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
-#endif
-
-#if defined(REPRAPWORLD_KEYPAD)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
-#if defined(RA_CONTROL_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
- #define LCD_I2C_TYPE_PCA8574
- #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-#endif
-
-//I2C PANELS
+/**
+ * I2C Panels
+ */
 
 //#define LCD_I2C_SAINSMART_YWROBOT
-#ifdef LCD_I2C_SAINSMART_YWROBOT
-  // This uses the LiquidCrystal_I2C library ( https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home )
-  // Make sure it is placed in the Arduino libraries directory.
-  #define LCD_I2C_TYPE_PCF8575
-  #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
 //#define LCD_I2C_PANELOLU2
-#ifdef LCD_I2C_PANELOLU2
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
-  // Note: The PANELOLU2 encoder click input can either be directly connected to a pin
-  //       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
-  #define NEWPANEL
-  #define ULTIPANEL
-
-  #ifndef ENCODER_PULSES_PER_STEP
-	#define ENCODER_PULSES_PER_STEP 4
-  #endif
-
-  #ifndef ENCODER_STEPS_PER_MENU_ITEM
-	#define ENCODER_STEPS_PER_MENU_ITEM 1
-  #endif
-
-
-  #ifdef LCD_USE_I2C_BUZZER
-	#define LCD_FEEDBACK_FREQUENCY_HZ 1000
-	#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100
-  #endif
-
-#endif
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
 //#define LCD_I2C_VIKI
-#ifdef LCD_I2C_VIKI
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // Note: The pause/stop/resume LCD button pin should be connected to the Arduino
-  //       BTN_ENC pin (or set BTN_ENC to -1 if not used)
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD (requires LiquidTWI2 v1.2.3 or later)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // Shift register panels
 // ---------------------
 // https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection
 
 //#define SAV_3DLCD
-#ifdef SAV_3DLCD
-   #define SR_LCD_2W_NL    // Non latching 2 wire shiftregister
-   #define NEWPANEL
-   #define ULTIPANEL
-#endif
-
-
-#ifdef ULTIPANEL
-  #define NEWPANEL  //enable this if you have a click-encoder panel
-  #define SDSUPPORT
-  #define ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the DOG graphic display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 20
-    #define LCD_HEIGHT 4
-  #endif
-#else //no panel but just LCD
-  #ifdef ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 16
-    #define LCD_HEIGHT 2
-  #endif
-  #endif
-#endif
 
-// default LCD contrast for dogm-like LCD displays
-#ifdef DOGLCD
-# ifndef DEFAULT_LCD_CONTRAST
-#  define DEFAULT_LCD_CONTRAST 32
-# endif
-#endif
 
 // Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
 #define FAST_PWM_FAN
 //#define FILAMENT_LCD_DISPLAY
 
 
+
+
+
+
 #include "Configuration_adv.h"
 #include "thermistortables.h"
 
-#endif //__CONFIGURATION_H
+#endif //CONFIGURATION_H

Marlin/example_configurations/Felix/Configuration_adv.h

 #ifndef CONFIGURATION_ADV_H
 #define CONFIGURATION_ADV_H
 
+#include "Conditionals.h"
+
 //===========================================================================
 //=============================Thermal Settings  ============================
 //===========================================================================
 
 #define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing
 
-
-//// AUTOSET LOCATIONS OF LIMIT SWITCHES
-//// Added by ZetaPhoenix 09-15-2012
-#ifdef MANUAL_HOME_POSITIONS  // Use manual limit switch locations
-  #define X_HOME_POS MANUAL_X_HOME_POS
-  #define Y_HOME_POS MANUAL_Y_HOME_POS
-  #define Z_HOME_POS MANUAL_Z_HOME_POS
-#else //Set min/max homing switch positions based upon homing direction and min/max travel limits
-  //X axis
-  #if X_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * -0.5
-    #else
-      #define X_HOME_POS X_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * 0.5
-    #else
-      #define X_HOME_POS X_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //X_HOME_DIR == -1
-
-  //Y axis
-  #if Y_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * -0.5
-    #else
-      #define Y_HOME_POS Y_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * 0.5
-    #else
-      #define Y_HOME_POS Y_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //Y_HOME_DIR == -1
-
-  // Z axis
-  #if Z_HOME_DIR == -1 //BED_CENTER_AT_0_0 not used
-    #define Z_HOME_POS Z_MIN_POS
-  #else
-    #define Z_HOME_POS Z_MAX_POS
-  #endif //Z_HOME_DIR == -1
-#endif //End auto min/max positions
-//END AUTOSET LOCATIONS OF LIMIT SWITCHES -ZP
-
-
 //#define Z_LATE_ENABLE // Enable Z the last moment. Needed if your Z driver overheats.
 
 // A single Z stepper driver is usually used to drive 2 stepper motors.
 // On a RAMPS (or other 5 driver) motherboard, using this feature will limit you to using 1 extruder.
 //#define Z_DUAL_STEPPER_DRIVERS
 
-#ifdef Z_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
 // Same again but for Y Axis.
 //#define Y_DUAL_STEPPER_DRIVERS
 
 // Define if the two Y drives need to rotate in opposite directions
 #define INVERT_Y2_VS_Y_DIR true
 
-#ifdef Y_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
-#if defined (Z_DUAL_STEPPER_DRIVERS) && defined (Y_DUAL_STEPPER_DRIVERS)
-  #error "You cannot have dual drivers for both Y and Z"
-#endif
-
 // Enable this for dual x-carriage printers.
 // A dual x-carriage design has the advantage that the inactive extruder can be parked which
 // prevents hot-end ooze contaminating the print. It also reduces the weight of each x-carriage
 //#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
-#ifdef CONFIG_STEPPERS_TOSHIBA
-#define MAX_STEP_FREQUENCY 10000 // Max step frequency for Toshiba Stepper Controllers
-#else
-#define MAX_STEP_FREQUENCY 40000 // Max step frequency for Ultimaker (5000 pps / half step)
-#endif
+
 //By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false
 #define INVERT_Y_STEP_PIN false
 #define INVERT_Z_STEP_PIN false
 #define INVERT_E_STEP_PIN false
 
-//default stepper release if idle. Set to 0 to deactivate.
+// Default stepper release if idle. Set to 0 to deactivate.
 #define DEFAULT_STEPPER_DEACTIVE_TIME 60
 
 #define DEFAULT_MINIMUMFEEDRATE       0.0     // minimum feedrate
 #define DEFAULT_MINTRAVELFEEDRATE     0.0
 
-// Feedrates for manual moves along X, Y, Z, E from panel
 #ifdef ULTIPANEL
-#define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60}  // set the speeds for manual moves (mm/min)
-#endif
-
-//Comment to disable setting feedrate multiplier via encoder
-#ifdef ULTIPANEL
-    #define ULTIPANEL_FEEDMULTIPLY
+  #define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60} // Feedrates for manual moves along X, Y, Z, E from panel
+  #define ULTIPANEL_FEEDMULTIPLY  // Comment to disable setting feedrate multiplier via encoder
 #endif
 
 // minimum time in microseconds that a movement needs to take if the buffer is emptied.
 // if unwanted behavior is observed on a user's machine when running at very slow speeds.
 #define MINIMUM_PLANNER_SPEED 0.05// (mm/sec)
 
-// MS1 MS2 Stepper Driver Microstepping mode table
-#define MICROSTEP1 LOW,LOW
-#define MICROSTEP2 HIGH,LOW
-#define MICROSTEP4 LOW,HIGH
-#define MICROSTEP8 HIGH,HIGH
-#define MICROSTEP16 HIGH,HIGH
-
 // Microstep setting (Only functional when stepper driver microstep pins are connected to MCU.
 #define MICROSTEP_MODES {16,16,16,16,16} // [1,2,4,8,16]
 
   #define PROGRESS_MSG_EXPIRE   0
   // Enable this to show messages for MSG_TIME then hide them
   //#define PROGRESS_MSG_ONCE
-  #ifdef DOGLCD
-    #warning LCD_PROGRESS_BAR does not apply to graphical displays at this time.
-  #endif
-  #ifdef FILAMENT_LCD_DISPLAY
-    #error LCD_PROGRESS_BAR and FILAMENT_LCD_DISPLAY are not fully compatible. Comment out this line to use both.
-  #endif
 #endif
 
 // The hardware watchdog should reset the microcontroller disabling all outputs, in case the firmware gets stuck and doesn't do temperature regulation.
   #define BABYSTEP_XY  //not only z, but also XY in the menu. more clutter, more functions
   #define BABYSTEP_INVERT_Z false  //true for inverse movements in Z
   #define BABYSTEP_Z_MULTIPLICATOR 2 //faster z movements
-
-  #ifdef COREXY
-    #error BABYSTEPPING not implemented for COREXY yet.
-  #endif
-
-  #ifdef DELTA
-    #ifdef BABYSTEP_XY
-      #error BABYSTEPPING only implemented for Z axis on deltabots.
-    #endif
-  #endif
 #endif
 
 // extruder advance constant (s2/mm3)
 
 #ifdef ADVANCE
   #define EXTRUDER_ADVANCE_K .0
-
   #define D_FILAMENT 2.85
   #define STEPS_MM_E 836
-  #define EXTRUSION_AREA (0.25 * D_FILAMENT * D_FILAMENT * 3.14159)
-  #define STEPS_PER_CUBIC_MM_E (axis_steps_per_unit[E_AXIS]/ EXTRUSION_AREA)
-
 #endif // ADVANCE
 
 // Arc interpretation settings:
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-//adds support for experimental filament exchange support M600; requires display
+// Add support for experimental filament exchange support M600; requires display
 #ifdef ULTIPANEL
-  #define FILAMENTCHANGEENABLE
+  //#define FILAMENTCHANGEENABLE
   #ifdef FILAMENTCHANGEENABLE
     #define FILAMENTCHANGE_XPOS 3
     #define FILAMENTCHANGE_YPOS 3
   #endif
 #endif
 
-#ifdef FILAMENTCHANGEENABLE
-  #ifdef EXTRUDER_RUNOUT_PREVENT
-    #error EXTRUDER_RUNOUT_PREVENT currently incompatible with FILAMENTCHANGE
-  #endif
-#endif
-
-//===========================================================================
-//=============================  Define Defines  ============================
-//===========================================================================
-
-#if defined (ENABLE_AUTO_BED_LEVELING) && defined (DELTA)
-  #error "Bed Auto Leveling is still not compatible with Delta Kinematics."
-#endif
-
-#if EXTRUDERS > 1 && defined TEMP_SENSOR_1_AS_REDUNDANT
-  #error "You cannot use TEMP_SENSOR_1_AS_REDUNDANT if EXTRUDERS > 1"
-#endif
-
-#if EXTRUDERS > 1 && defined HEATERS_PARALLEL
-  #error "You cannot use HEATERS_PARALLEL if EXTRUDERS > 1"
-#endif
-
-#if TEMP_SENSOR_0 > 0
-  #define THERMISTORHEATER_0 TEMP_SENSOR_0
-  #define HEATER_0_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_1 > 0
-  #define THERMISTORHEATER_1 TEMP_SENSOR_1
-  #define HEATER_1_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_2 > 0
-  #define THERMISTORHEATER_2 TEMP_SENSOR_2
-  #define HEATER_2_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_3 > 0
-  #define THERMISTORHEATER_3 TEMP_SENSOR_3
-  #define HEATER_3_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_BED > 0
-  #define THERMISTORBED TEMP_SENSOR_BED
-  #define BED_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_0 == -1
-  #define HEATER_0_USES_AD595
-#endif
-#if TEMP_SENSOR_1 == -1
-  #define HEATER_1_USES_AD595
-#endif
-#if TEMP_SENSOR_2 == -1
-  #define HEATER_2_USES_AD595
-#endif
-#if TEMP_SENSOR_3 == -1
-  #define HEATER_3_USES_AD595
-#endif
-#if TEMP_SENSOR_BED == -1
-  #define BED_USES_AD595
-#endif
-#if TEMP_SENSOR_0 == -2
-  #define HEATER_0_USES_MAX6675
-#endif
-#if TEMP_SENSOR_0 == 0
-  #undef HEATER_0_MINTEMP
-  #undef HEATER_0_MAXTEMP
-#endif
-#if TEMP_SENSOR_1 == 0
-  #undef HEATER_1_MINTEMP
-  #undef HEATER_1_MAXTEMP
-#endif
-#if TEMP_SENSOR_2 == 0
-  #undef HEATER_2_MINTEMP
-  #undef HEATER_2_MAXTEMP
-#endif
-#if TEMP_SENSOR_3 == 0
-  #undef HEATER_3_MINTEMP
-  #undef HEATER_3_MAXTEMP
-#endif
-#if TEMP_SENSOR_BED == 0
-  #undef BED_MINTEMP
-  #undef BED_MAXTEMP
-#endif
-
+#include "Conditionals.h"
+#include "SanityCheck.h"
 
-#endif //__CONFIGURATION_ADV_H
+#endif //CONFIGURATION_ADV_H

Marlin/example_configurations/Hephestos/Configuration.h

   // #define ENDSTOPPULLUP_ZMIN
 #endif
 
-#ifdef ENDSTOPPULLUPS
-  #define ENDSTOPPULLUP_XMAX
-  #define ENDSTOPPULLUP_YMAX
-  #define ENDSTOPPULLUP_ZMAX
-  #define ENDSTOPPULLUP_XMIN
-  #define ENDSTOPPULLUP_YMIN
-  #define ENDSTOPPULLUP_ZMIN
-#endif
-
 // The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
 const bool X_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
 const bool Y_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
 #define Z_MAX_POS 180
 #define Z_MIN_POS 0
 
-#define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS)
-#define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS)
-#define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)
+//===========================================================================
+//============================= Filament Runout Sensor ======================
+//===========================================================================
+//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
+                                 // In RAMPS uses servo pin 2. Can be changed in pins file. For other boards pin definition should be made.
+                                 // It is assumed that when logic high = filament available
+                                 //                    when logic  low = filament ran out
+//const bool FIL_RUNOUT_INVERTING = true;  // Should be uncommented and true or false should assigned
+//#define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
+
+//===========================================================================
+//============================ Manual Bed Leveling ==========================
+//===========================================================================
 
+// #define MANUAL_BED_LEVELING  // Add display menu option for bed leveling
+// #define MESH_BED_LEVELING    // Enable mesh bed leveling
+
+#if defined(MESH_BED_LEVELING)
+  #define MESH_MIN_X 10
+  #define MESH_MAX_X (X_MAX_POS - MESH_MIN_X)
+  #define MESH_MIN_Y 10
+  #define MESH_MAX_Y (Y_MAX_POS - MESH_MIN_Y)
+  #define MESH_NUM_X_POINTS 3  // Don't use more than 7 points per axis, implementation limited
+  #define MESH_NUM_Y_POINTS 3
+  #define MESH_HOME_SEARCH_Z 4  // Z after Home, bed somewhere below but above 0.0
+#endif  // MESH_BED_LEVELING
 
 //===========================================================================
 //============================= Bed Auto Leveling ===========================
 
   #ifdef AUTO_BED_LEVELING_GRID
 
-    // Use one of these defines to specify the origin
-    // for a topographical map to be printed for your bed.
-    enum { OriginBackLeft, OriginFrontLeft, OriginBackRight, OriginFrontRight };
-    #define TOPO_ORIGIN OriginFrontLeft
-
-    // The edges of the rectangle in which to probe
     #define LEFT_PROBE_BED_POSITION 15
     #define RIGHT_PROBE_BED_POSITION 170
     #define FRONT_PROBE_BED_POSITION 20
 // REMEMBER TO INSTALL LiquidCrystal_I2C.h in your ARDUINO library folder: https://github.com/kiyoshigawa/LiquidCrystal_I2C
 //#define RA_CONTROL_PANEL
 
-//automatic expansion
-#if defined (MAKRPANEL)
- #define DOGLCD
- #define SDSUPPORT
- #define ULTIPANEL
- #define NEWPANEL
- #define DEFAULT_LCD_CONTRAST 17
-#endif
-
-#if defined(miniVIKI) || defined(VIKI2)
- #define ULTRA_LCD  //general LCD support, also 16x2
- #define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
- #define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
- 
-  #ifdef miniVIKI
-   #define DEFAULT_LCD_CONTRAST 95
-  #else
-   #define DEFAULT_LCD_CONTRAST 40
-  #endif
-  
- #define ENCODER_PULSES_PER_STEP 4
- #define ENCODER_STEPS_PER_MENU_ITEM 1
-#endif
-
-#if defined (PANEL_ONE)
- #define SDSUPPORT
- #define ULTIMAKERCONTROLLER
-#endif
-
-#if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
- #define DOGLCD
- #define U8GLIB_ST7920
- #define REPRAP_DISCOUNT_SMART_CONTROLLER
-#endif
-
-#if defined(ULTIMAKERCONTROLLER) || defined(REPRAP_DISCOUNT_SMART_CONTROLLER) || defined(G3D_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
-#endif
-
-#if defined(REPRAPWORLD_KEYPAD)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
-#if defined(RA_CONTROL_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
- #define LCD_I2C_TYPE_PCA8574
- #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-#endif
-
-//I2C PANELS
+/**
+ * I2C Panels
+ */
 
 //#define LCD_I2C_SAINSMART_YWROBOT
-#ifdef LCD_I2C_SAINSMART_YWROBOT
-  // This uses the LiquidCrystal_I2C library ( https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home )
-  // Make sure it is placed in the Arduino libraries directory.
-  #define LCD_I2C_TYPE_PCF8575
-  #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
 //#define LCD_I2C_PANELOLU2
-#ifdef LCD_I2C_PANELOLU2
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
-  // Note: The PANELOLU2 encoder click input can either be directly connected to a pin
-  //       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
-  #define NEWPANEL
-  #define ULTIPANEL
-
-  #ifndef ENCODER_PULSES_PER_STEP
-	#define ENCODER_PULSES_PER_STEP 4
-  #endif
-
-  #ifndef ENCODER_STEPS_PER_MENU_ITEM
-	#define ENCODER_STEPS_PER_MENU_ITEM 1
-  #endif
-
-
-  #ifdef LCD_USE_I2C_BUZZER
-	#define LCD_FEEDBACK_FREQUENCY_HZ 1000
-	#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100
-  #endif
-
-#endif
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
 //#define LCD_I2C_VIKI
-#ifdef LCD_I2C_VIKI
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // Note: The pause/stop/resume LCD button pin should be connected to the Arduino
-  //       BTN_ENC pin (or set BTN_ENC to -1 if not used)
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD (requires LiquidTWI2 v1.2.3 or later)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // Shift register panels
 // ---------------------
 // https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection 
 
 //#define SAV_3DLCD
-#ifdef SAV_3DLCD
-   #define SR_LCD_2W_NL    // Non latching 2 wire shiftregister
-   #define NEWPANEL
-   #define ULTIPANEL
-#endif
-
-
-#ifdef ULTIPANEL
-//  #define NEWPANEL  //enable this if you have a click-encoder panel
-  #define SDSUPPORT
-  #define ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the DOG graphic display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 20
-    #define LCD_HEIGHT 4
-  #endif
-#else //no panel but just LCD
-  #ifdef ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 16
-    #define LCD_HEIGHT 2
-  #endif
-  #endif
-#endif
-
-// default LCD contrast for dogm-like LCD displays
-#ifdef DOGLCD
-# ifndef DEFAULT_LCD_CONTRAST
-#  define DEFAULT_LCD_CONTRAST 32
-# endif
-#endif
 
 // Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
 //#define FAST_PWM_FAN
 
-// Temperature status LEDs that display the hotend and bet temperature.
-// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
-// Otherwise the RED led is on. There is 1C hysteresis.
-//#define TEMP_STAT_LEDS
-
 // Use software PWM to drive the fan, as for the heaters. This uses a very low frequency
 // which is not ass annoying as with the hardware PWM. On the other hand, if this frequency
 // is too low, you should also increment SOFT_PWM_SCALE.
 // at zero value, there are 128 effective control positions.
 #define SOFT_PWM_SCALE 0
 
+// Temperature status LEDs that display the hotend and bet temperature.
+// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
+// Otherwise the RED led is on. There is 1C hysteresis.
+//#define TEMP_STAT_LEDS
+
 // M240  Triggers a camera by emulating a Canon RC-1 Remote
 // Data from: http://www.doc-diy.net/photo/rc-1_hacked/
 // #define PHOTOGRAPH_PIN     23
 #include "Configuration_adv.h"
 #include "thermistortables.h"
 
-#endif //__CONFIGURATION_H
+#endif //CONFIGURATION_H

Marlin/example_configurations/Hephestos/Configuration_adv.h

 #ifndef CONFIGURATION_ADV_H
 #define CONFIGURATION_ADV_H
 
+#include "Conditionals.h"
+
 //===========================================================================
 //=============================Thermal Settings  ============================
 //===========================================================================
 
 //#define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing
 
-
-//// AUTOSET LOCATIONS OF LIMIT SWITCHES
-//// Added by ZetaPhoenix 09-15-2012
-#ifdef MANUAL_HOME_POSITIONS  // Use manual limit switch locations
-  #define X_HOME_POS MANUAL_X_HOME_POS
-  #define Y_HOME_POS MANUAL_Y_HOME_POS
-  #define Z_HOME_POS MANUAL_Z_HOME_POS
-#else //Set min/max homing switch positions based upon homing direction and min/max travel limits
-  //X axis
-  #if X_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * -0.5
-    #else
-      #define X_HOME_POS X_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * 0.5
-    #else
-      #define X_HOME_POS X_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //X_HOME_DIR == -1
-
-  //Y axis
-  #if Y_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * -0.5
-    #else
-      #define Y_HOME_POS Y_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * 0.5
-    #else
-      #define Y_HOME_POS Y_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //Y_HOME_DIR == -1
-
-  // Z axis
-  #if Z_HOME_DIR == -1 //BED_CENTER_AT_0_0 not used
-    #define Z_HOME_POS Z_MIN_POS
-  #else
-    #define Z_HOME_POS Z_MAX_POS
-  #endif //Z_HOME_DIR == -1
-#endif //End auto min/max positions
-//END AUTOSET LOCATIONS OF LIMIT SWITCHES -ZP
-
-
 //#define Z_LATE_ENABLE // Enable Z the last moment. Needed if your Z driver overheats.
 
 // A single Z stepper driver is usually used to drive 2 stepper motors.
 // On a RAMPS (or other 5 driver) motherboard, using this feature will limit you to using 1 extruder.
 //#define Z_DUAL_STEPPER_DRIVERS
 
-#ifdef Z_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
 // Same again but for Y Axis.
 //#define Y_DUAL_STEPPER_DRIVERS
 
 // Define if the two Y drives need to rotate in opposite directions
 #define INVERT_Y2_VS_Y_DIR true
 
-#ifdef Y_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
-#if defined (Z_DUAL_STEPPER_DRIVERS) && defined (Y_DUAL_STEPPER_DRIVERS)
-  #error "You cannot have dual drivers for both Y and Z"
-#endif
-
 // Enable this for dual x-carriage printers.
 // A dual x-carriage design has the advantage that the inactive extruder can be parked which
 // prevents hot-end ooze contaminating the print. It also reduces the weight of each x-carriage
 #define INVERT_Z_STEP_PIN false
 #define INVERT_E_STEP_PIN false
 
-//default stepper release if idle. Set to 0 to deactivate.
+// Default stepper release if idle. Set to 0 to deactivate.
 #define DEFAULT_STEPPER_DEACTIVE_TIME 60
 
 #define DEFAULT_MINIMUMFEEDRATE       0.0     // minimum feedrate
 #define DEFAULT_MINTRAVELFEEDRATE     0.0
 
-// Feedrates for manual moves along X, Y, Z, E from panel
 #ifdef ULTIPANEL
-#define MANUAL_FEEDRATE {120*60, 120*60, 18*60, 60}  // set the speeds for manual moves (mm/min)
-#endif
-
-//Comment to disable setting feedrate multiplier via encoder
-#ifdef ULTIPANEL
-    #define ULTIPANEL_FEEDMULTIPLY
+  #define MANUAL_FEEDRATE {120*60, 120*60, 18*60, 60}  // Feedrates for manual moves along X, Y, Z, E from panel
+  #define ULTIPANEL_FEEDMULTIPLY  // Comment to disable setting feedrate multiplier via encoder
 #endif
 
 // minimum time in microseconds that a movement needs to take if the buffer is emptied.
 // if unwanted behavior is observed on a user's machine when running at very slow speeds.
 #define MINIMUM_PLANNER_SPEED 0.05// (mm/sec)
 
-// MS1 MS2 Stepper Driver Microstepping mode table
-#define MICROSTEP1 LOW,LOW
-#define MICROSTEP2 HIGH,LOW
-#define MICROSTEP4 LOW,HIGH
-#define MICROSTEP8 HIGH,HIGH
-#define MICROSTEP16 HIGH,HIGH
-
 // Microstep setting (Only functional when stepper driver microstep pins are connected to MCU.
 #define MICROSTEP_MODES {16,16,16,16,16} // [1,2,4,8,16]
 
   #define PROGRESS_MSG_EXPIRE   0
   // Enable this to show messages for MSG_TIME then hide them
   //#define PROGRESS_MSG_ONCE
-  #ifdef DOGLCD
-    #warning LCD_PROGRESS_BAR does not apply to graphical displays at this time.
-  #endif
-  #ifdef FILAMENT_LCD_DISPLAY
-    #error LCD_PROGRESS_BAR and FILAMENT_LCD_DISPLAY are not fully compatible. Comment out this line to use both.
-  #endif
 #endif
 
 // The hardware watchdog should reset the microcontroller disabling all outputs, in case the firmware gets stuck and doesn't do temperature regulation.
   #define BABYSTEP_XY  //not only z, but also XY in the menu. more clutter, more functions
   #define BABYSTEP_INVERT_Z false  //true for inverse movements in Z
   #define BABYSTEP_Z_MULTIPLICATOR 2 //faster z movements
-
-  #ifdef COREXY
-    #error BABYSTEPPING not implemented for COREXY yet.
-  #endif
-
-  #ifdef DELTA
-    #ifdef BABYSTEP_XY
-      #error BABYSTEPPING only implemented for Z axis on deltabots.
-    #endif
-  #endif
 #endif
 
 // extruder advance constant (s2/mm3)
 
 #ifdef ADVANCE
   #define EXTRUDER_ADVANCE_K .0
-
   #define D_FILAMENT 1.75
   #define STEPS_MM_E 100.47095761381482
-  #define EXTRUSION_AREA (0.25 * D_FILAMENT * D_FILAMENT * 3.14159)
-  #define STEPS_PER_CUBIC_MM_E (axis_steps_per_unit[E_AXIS]/ EXTRUSION_AREA)
-
 #endif // ADVANCE
 
 // Arc interpretation settings:
 // be commented out otherwise
 #define SDCARDDETECTINVERTED
 
-#ifdef ULTIPANEL
- #undef SDCARDDETECTINVERTED
-#endif
-
-// Power Signal Control Definitions
-// By default use ATX definition
-#ifndef POWER_SUPPLY
-  #define POWER_SUPPLY 1
-#endif
-// 1 = ATX
-#if (POWER_SUPPLY == 1)
-  #define PS_ON_AWAKE  LOW
-  #define PS_ON_ASLEEP HIGH
-#endif
-// 2 = X-Box 360 203W
-#if (POWER_SUPPLY == 2)
-  #define PS_ON_AWAKE  HIGH
-  #define PS_ON_ASLEEP LOW
-#endif
-
 // Control heater 0 and heater 1 in parallel.
 //#define HEATERS_PARALLEL
 
   #define RETRACT_RECOVER_FEEDRATE 8*60     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-//adds support for experimental filament exchange support M600; requires display
+// Add support for experimental filament exchange support M600; requires display
 #ifdef ULTIPANEL
-  #define FILAMENTCHANGEENABLE
+  //#define FILAMENTCHANGEENABLE
   #ifdef FILAMENTCHANGEENABLE
     #define FILAMENTCHANGE_XPOS 3
     #define FILAMENTCHANGE_YPOS 3
   #endif
 #endif
 
-#ifdef FILAMENTCHANGEENABLE
-  #ifdef EXTRUDER_RUNOUT_PREVENT
-    #error EXTRUDER_RUNOUT_PREVENT currently incompatible with FILAMENTCHANGE
-  #endif
-#endif
-
-//===========================================================================
-//=============================  Define Defines  ============================
-//===========================================================================
-
-#if defined (ENABLE_AUTO_BED_LEVELING) && defined (DELTA)
-  #error "Bed Auto Leveling is still not compatible with Delta Kinematics."
-#endif
-
-#if EXTRUDERS > 1 && defined TEMP_SENSOR_1_AS_REDUNDANT
-  #error "You cannot use TEMP_SENSOR_1_AS_REDUNDANT if EXTRUDERS > 1"
-#endif
-
-#if EXTRUDERS > 1 && defined HEATERS_PARALLEL
-  #error "You cannot use HEATERS_PARALLEL if EXTRUDERS > 1"
-#endif
-
-#if TEMP_SENSOR_0 > 0
-  #define THERMISTORHEATER_0 TEMP_SENSOR_0
-  #define HEATER_0_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_1 > 0
-  #define THERMISTORHEATER_1 TEMP_SENSOR_1
-  #define HEATER_1_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_2 > 0
-  #define THERMISTORHEATER_2 TEMP_SENSOR_2
-  #define HEATER_2_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_3 > 0
-  #define THERMISTORHEATER_3 TEMP_SENSOR_3
-  #define HEATER_3_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_BED > 0
-  #define THERMISTORBED TEMP_SENSOR_BED
-  #define BED_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_0 == -1
-  #define HEATER_0_USES_AD595
-#endif
-#if TEMP_SENSOR_1 == -1
-  #define HEATER_1_USES_AD595
-#endif
-#if TEMP_SENSOR_2 == -1
-  #define HEATER_2_USES_AD595
-#endif
-#if TEMP_SENSOR_3 == -1
-  #define HEATER_3_USES_AD595
-#endif
-#if TEMP_SENSOR_BED == -1
-  #define BED_USES_AD595
-#endif
-#if TEMP_SENSOR_0 == -2
-  #define HEATER_0_USES_MAX6675
-#endif
-#if TEMP_SENSOR_0 == 0
-  #undef HEATER_0_MINTEMP
-  #undef HEATER_0_MAXTEMP
-#endif
-#if TEMP_SENSOR_1 == 0
-  #undef HEATER_1_MINTEMP
-  #undef HEATER_1_MAXTEMP
-#endif
-#if TEMP_SENSOR_2 == 0
-  #undef HEATER_2_MINTEMP
-  #undef HEATER_2_MAXTEMP
-#endif
-#if TEMP_SENSOR_3 == 0
-  #undef HEATER_3_MINTEMP
-  #undef HEATER_3_MAXTEMP
-#endif
-#if TEMP_SENSOR_BED == 0
-  #undef BED_MINTEMP
-  #undef BED_MAXTEMP
-#endif
-
+#include "Conditionals.h"
+#include "SanityCheck.h"
 
-#endif //__CONFIGURATION_ADV_H
+#endif //CONFIGURATION_ADV_H

Marlin/example_configurations/K8200/Configuration.h

   #define ENDSTOPPULLUP_ZMIN
 #endif
 
-#ifdef ENDSTOPPULLUPS
-  // #define ENDSTOPPULLUP_XMAX
-  // #define ENDSTOPPULLUP_YMAX
-  // #define ENDSTOPPULLUP_ZMAX
-  #define ENDSTOPPULLUP_XMIN
-  #define ENDSTOPPULLUP_YMIN
-  #define ENDSTOPPULLUP_ZMIN
-#endif
-
 // The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
 const bool X_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
 const bool Y_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
 #define Z_MAX_POS 200
 #define Z_MIN_POS 0
 
-#define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS)
-#define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS)
-#define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)
+//===========================================================================
+//============================= Filament Runout Sensor ======================
+//===========================================================================
+//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
+                                 // In RAMPS uses servo pin 2. Can be changed in pins file. For other boards pin definition should be made.
+                                 // It is assumed that when logic high = filament available
+                                 //                    when logic  low = filament ran out
+//const bool FIL_RUNOUT_INVERTING = true;  // Should be uncommented and true or false should assigned
+//#define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
 
+//===========================================================================
+//============================ Manual Bed Leveling ==========================
+//===========================================================================
+
+// #define MANUAL_BED_LEVELING  // Add display menu option for bed leveling
+// #define MESH_BED_LEVELING    // Enable mesh bed leveling
+
+#if defined(MESH_BED_LEVELING)
+  #define MESH_MIN_X 10
+  #define MESH_MAX_X (X_MAX_POS - MESH_MIN_X)
+  #define MESH_MIN_Y 10
+  #define MESH_MAX_Y (Y_MAX_POS - MESH_MIN_Y)
+  #define MESH_NUM_X_POINTS 3  // Don't use more than 7 points per axis, implementation limited
+  #define MESH_NUM_Y_POINTS 3
+  #define MESH_HOME_SEARCH_Z 4  // Z after Home, bed somewhere below but above 0.0
+#endif  // MESH_BED_LEVELING
 
 //===========================================================================
 //============================= Bed Auto Leveling ===========================
 
   #ifdef AUTO_BED_LEVELING_GRID
 
-    // Use one of these defines to specify the origin
-    // for a topographical map to be printed for your bed.
-    enum { OriginBackLeft, OriginFrontLeft, OriginBackRight, OriginFrontRight };
-    #define TOPO_ORIGIN OriginFrontLeft
-
-    // The edges of the rectangle in which to probe
     #define LEFT_PROBE_BED_POSITION 15
     #define RIGHT_PROBE_BED_POSITION 170
     #define FRONT_PROBE_BED_POSITION 20
 // REMEMBER TO INSTALL LiquidCrystal_I2C.h in your ARDUINO library folder: https://github.com/kiyoshigawa/LiquidCrystal_I2C
 //#define RA_CONTROL_PANEL
 
-//automatic expansion
-#if defined (MAKRPANEL)
- #define DOGLCD
- #define SDSUPPORT
- #define ULTIPANEL
- #define NEWPANEL
- #define DEFAULT_LCD_CONTRAST 17
-#endif
-
-#if defined(miniVIKI) || defined(VIKI2)
- #define ULTRA_LCD  //general LCD support, also 16x2
- #define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
- #define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
- 
-  #ifdef miniVIKI
-   #define DEFAULT_LCD_CONTRAST 95
-  #else
-   #define DEFAULT_LCD_CONTRAST 40
-  #endif
-  
- #define ENCODER_PULSES_PER_STEP 4
- #define ENCODER_STEPS_PER_MENU_ITEM 1
-#endif
-
-#if defined (PANEL_ONE)
- #define SDSUPPORT
- #define ULTIMAKERCONTROLLER
-#endif
-
-#if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
- #define DOGLCD
- #define U8GLIB_ST7920
- #define REPRAP_DISCOUNT_SMART_CONTROLLER
-#endif
-
-#if defined(ULTIMAKERCONTROLLER) || defined(REPRAP_DISCOUNT_SMART_CONTROLLER) || defined(G3D_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
-#endif
-
-#if defined(REPRAPWORLD_KEYPAD)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
-#if defined(RA_CONTROL_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
- #define LCD_I2C_TYPE_PCA8574
- #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-#endif
-
-//I2C PANELS
+/**
+ * I2C Panels
+ */
 
 //#define LCD_I2C_SAINSMART_YWROBOT
-#ifdef LCD_I2C_SAINSMART_YWROBOT
-  // This uses the LiquidCrystal_I2C library ( https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home )
-  // Make sure it is placed in the Arduino libraries directory.
-  #define LCD_I2C_TYPE_PCF8575
-  #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
 //#define LCD_I2C_PANELOLU2
-#ifdef LCD_I2C_PANELOLU2
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
-  // Note: The PANELOLU2 encoder click input can either be directly connected to a pin
-  //       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
-  #define NEWPANEL
-  #define ULTIPANEL
-
-  #ifndef ENCODER_PULSES_PER_STEP
-	#define ENCODER_PULSES_PER_STEP 4
-  #endif
-
-  #ifndef ENCODER_STEPS_PER_MENU_ITEM
-	#define ENCODER_STEPS_PER_MENU_ITEM 1
-  #endif
-
-
-  #ifdef LCD_USE_I2C_BUZZER
-	#define LCD_FEEDBACK_FREQUENCY_HZ 1000
-	#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100
-  #endif
-
-#endif
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
 //#define LCD_I2C_VIKI
-#ifdef LCD_I2C_VIKI
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // Note: The pause/stop/resume LCD button pin should be connected to the Arduino
-  //       BTN_ENC pin (or set BTN_ENC to -1 if not used)
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD (requires LiquidTWI2 v1.2.3 or later)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // Shift register panels
 // ---------------------
 // https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection 
 
 //#define SAV_3DLCD
-#ifdef SAV_3DLCD
-   #define SR_LCD_2W_NL    // Non latching 2 wire shiftregister
-   #define NEWPANEL
-   #define ULTIPANEL
-#endif
-
-
-#ifdef ULTIPANEL
-//  #define NEWPANEL  //enable this if you have a click-encoder panel
-  #define SDSUPPORT
-  #define ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the DOG graphic display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 20
-    #define LCD_HEIGHT 4
-  #endif
-#else //no panel but just LCD
-  #ifdef ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 16
-    #define LCD_HEIGHT 2
-  #endif
-  #endif
-#endif
-
-// default LCD contrast for dogm-like LCD displays
-#ifdef DOGLCD
-# ifndef DEFAULT_LCD_CONTRAST
-#  define DEFAULT_LCD_CONTRAST 32
-# endif
-#endif
 
 // Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
 //#define FAST_PWM_FAN
 
-// Temperature status LEDs that display the hotend and bet temperature.
-// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
-// Otherwise the RED led is on. There is 1C hysteresis.
-//#define TEMP_STAT_LEDS
-
 // Use software PWM to drive the fan, as for the heaters. This uses a very low frequency
 // which is not ass annoying as with the hardware PWM. On the other hand, if this frequency
 // is too low, you should also increment SOFT_PWM_SCALE.
 // at zero value, there are 128 effective control positions.
 #define SOFT_PWM_SCALE 0
 
+// Temperature status LEDs that display the hotend and bet temperature.
+// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
+// Otherwise the RED led is on. There is 1C hysteresis.
+//#define TEMP_STAT_LEDS
+
 // M240  Triggers a camera by emulating a Canon RC-1 Remote
 // Data from: http://www.doc-diy.net/photo/rc-1_hacked/
 // #define PHOTOGRAPH_PIN     23
 #include "Configuration_adv.h"
 #include "thermistortables.h"
 
-#endif //__CONFIGURATION_H
+#endif //CONFIGURATION_H

Marlin/example_configurations/K8200/Configuration_adv.h

 #ifndef CONFIGURATION_ADV_H
 #define CONFIGURATION_ADV_H
 
+#include "Conditionals.h"
+
 //===========================================================================
 //=============================Thermal Settings  ============================
 //===========================================================================
 
 #define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing
 
-
-//// AUTOSET LOCATIONS OF LIMIT SWITCHES
-//// Added by ZetaPhoenix 09-15-2012
-#ifdef MANUAL_HOME_POSITIONS  // Use manual limit switch locations
-  #define X_HOME_POS MANUAL_X_HOME_POS
-  #define Y_HOME_POS MANUAL_Y_HOME_POS
-  #define Z_HOME_POS MANUAL_Z_HOME_POS
-#else //Set min/max homing switch positions based upon homing direction and min/max travel limits
-  //X axis
-  #if X_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * -0.5
-    #else
-      #define X_HOME_POS X_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * 0.5
-    #else
-      #define X_HOME_POS X_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //X_HOME_DIR == -1
-
-  //Y axis
-  #if Y_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * -0.5
-    #else
-      #define Y_HOME_POS Y_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * 0.5
-    #else
-      #define Y_HOME_POS Y_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //Y_HOME_DIR == -1
-
-  // Z axis
-  #if Z_HOME_DIR == -1 //BED_CENTER_AT_0_0 not used
-    #define Z_HOME_POS Z_MIN_POS
-  #else
-    #define Z_HOME_POS Z_MAX_POS
-  #endif //Z_HOME_DIR == -1
-#endif //End auto min/max positions
-//END AUTOSET LOCATIONS OF LIMIT SWITCHES -ZP
-
-
 //#define Z_LATE_ENABLE // Enable Z the last moment. Needed if your Z driver overheats.
 
 // A single Z stepper driver is usually used to drive 2 stepper motors.
 // On a RAMPS (or other 5 driver) motherboard, using this feature will limit you to using 1 extruder.
 //#define Z_DUAL_STEPPER_DRIVERS
 
-#ifdef Z_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
 // Same again but for Y Axis.
 //#define Y_DUAL_STEPPER_DRIVERS
 
 // Define if the two Y drives need to rotate in opposite directions
 #define INVERT_Y2_VS_Y_DIR true
 
-#ifdef Y_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
-#if defined (Z_DUAL_STEPPER_DRIVERS) && defined (Y_DUAL_STEPPER_DRIVERS)
-  #error "You cannot have dual drivers for both Y and Z"
-#endif
-
 // Enable this for dual x-carriage printers.
 // A dual x-carriage design has the advantage that the inactive extruder can be parked which
 // prevents hot-end ooze contaminating the print. It also reduces the weight of each x-carriage
 //#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
-#ifdef CONFIG_STEPPERS_TOSHIBA
-#define MAX_STEP_FREQUENCY 10000 // Max step frequency for Toshiba Stepper Controllers
-#else
-#define MAX_STEP_FREQUENCY 40000 // Max step frequency for Ultimaker (5000 pps / half step)
-#endif
+
 //By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false
 #define INVERT_Y_STEP_PIN false
 #define INVERT_Z_STEP_PIN false
 #define INVERT_E_STEP_PIN false
 
-//default stepper release if idle. Set to 0 to deactivate.
+// Default stepper release if idle. Set to 0 to deactivate.
 #define DEFAULT_STEPPER_DEACTIVE_TIME 60
 
 #define DEFAULT_MINIMUMFEEDRATE       0.0     // minimum feedrate
 #define DEFAULT_MINTRAVELFEEDRATE     0.0
 
-// Feedrates for manual moves along X, Y, Z, E from panel
-#ifdef ULTIPANEL
-#define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60}  // set the speeds for manual moves (mm/min)
-#endif
-
-//Comment to disable setting feedrate multiplier via encoder
 #ifdef ULTIPANEL
-    #define ULTIPANEL_FEEDMULTIPLY
+  #define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60} // Feedrates for manual moves along X, Y, Z, E from panel
+  #define ULTIPANEL_FEEDMULTIPLY  // Comment to disable setting feedrate multiplier via encoder
 #endif
 
 // minimum time in microseconds that a movement needs to take if the buffer is emptied.
 // if unwanted behavior is observed on a user's machine when running at very slow speeds.
 #define MINIMUM_PLANNER_SPEED 0.05// (mm/sec)
 
-// MS1 MS2 Stepper Driver Microstepping mode table
-#define MICROSTEP1 LOW,LOW
-#define MICROSTEP2 HIGH,LOW
-#define MICROSTEP4 LOW,HIGH
-#define MICROSTEP8 HIGH,HIGH
-#define MICROSTEP16 HIGH,HIGH
-
 // Microstep setting (Only functional when stepper driver microstep pins are connected to MCU.
 #define MICROSTEP_MODES {16,16,16,16,16} // [1,2,4,8,16]
 
   #define PROGRESS_MSG_EXPIRE   0
   // Enable this to show messages for MSG_TIME then hide them
   //#define PROGRESS_MSG_ONCE
-  #ifdef DOGLCD
-    #warning LCD_PROGRESS_BAR does not apply to graphical displays at this time.
-  #endif
-  #ifdef FILAMENT_LCD_DISPLAY
-    #error LCD_PROGRESS_BAR and FILAMENT_LCD_DISPLAY are not fully compatible. Comment out this line to use both.
-  #endif
 #endif
 
 // The hardware watchdog should reset the microcontroller disabling all outputs, in case the firmware gets stuck and doesn't do temperature regulation.
   #define BABYSTEP_XY  //not only z, but also XY in the menu. more clutter, more functions
   #define BABYSTEP_INVERT_Z false  //true for inverse movements in Z
   #define BABYSTEP_Z_MULTIPLICATOR 2 //faster z movements
-
-  #ifdef COREXY
-    #error BABYSTEPPING not implemented for COREXY yet.
-  #endif
-
-  #ifdef DELTA
-    #ifdef BABYSTEP_XY
-      #error BABYSTEPPING only implemented for Z axis on deltabots.
-    #endif
-  #endif
 #endif
 
 // extruder advance constant (s2/mm3)
 
 #ifdef ADVANCE
   #define EXTRUDER_ADVANCE_K .0
-
   #define D_FILAMENT 2.85
   #define STEPS_MM_E 836
-  #define EXTRUSION_AREA (0.25 * D_FILAMENT * D_FILAMENT * 3.14159)
-  #define STEPS_PER_CUBIC_MM_E (axis_steps_per_unit[E_AXIS]/ EXTRUSION_AREA)
-
 #endif // ADVANCE
 
 // Arc interpretation settings:
 // be commented out otherwise
 #define SDCARDDETECTINVERTED
 
-#ifdef ULTIPANEL
- #undef SDCARDDETECTINVERTED
-#endif
-
-// Power Signal Control Definitions
-// By default use ATX definition
-#ifndef POWER_SUPPLY
-  #define POWER_SUPPLY 1
-#endif
-// 1 = ATX
-#if (POWER_SUPPLY == 1)
-  #define PS_ON_AWAKE  LOW
-  #define PS_ON_ASLEEP HIGH
-#endif
-// 2 = X-Box 360 203W
-#if (POWER_SUPPLY == 2)
-  #define PS_ON_AWAKE  HIGH
-  #define PS_ON_ASLEEP LOW
-#endif
-
 // Control heater 0 and heater 1 in parallel.
 //#define HEATERS_PARALLEL
 
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-//adds support for experimental filament exchange support M600; requires display
+// Add support for experimental filament exchange support M600; requires display
 #ifdef ULTIPANEL
-  #define FILAMENTCHANGEENABLE
+  //#define FILAMENTCHANGEENABLE
   #ifdef FILAMENTCHANGEENABLE
     #define FILAMENTCHANGE_XPOS 3
     #define FILAMENTCHANGE_YPOS 3
   #endif
 #endif
 
-#ifdef FILAMENTCHANGEENABLE
-  #ifdef EXTRUDER_RUNOUT_PREVENT
-    #error EXTRUDER_RUNOUT_PREVENT currently incompatible with FILAMENTCHANGE
-  #endif
-#endif
-
-//===========================================================================
-//=============================  Define Defines  ============================
-//===========================================================================
-
-#if defined (ENABLE_AUTO_BED_LEVELING) && defined (DELTA)
-  #error "Bed Auto Leveling is still not compatible with Delta Kinematics."
-#endif
-
-#if EXTRUDERS > 1 && defined TEMP_SENSOR_1_AS_REDUNDANT
-  #error "You cannot use TEMP_SENSOR_1_AS_REDUNDANT if EXTRUDERS > 1"
-#endif
-
-#if EXTRUDERS > 1 && defined HEATERS_PARALLEL
-  #error "You cannot use HEATERS_PARALLEL if EXTRUDERS > 1"
-#endif
-
-#if TEMP_SENSOR_0 > 0
-  #define THERMISTORHEATER_0 TEMP_SENSOR_0
-  #define HEATER_0_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_1 > 0
-  #define THERMISTORHEATER_1 TEMP_SENSOR_1
-  #define HEATER_1_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_2 > 0
-  #define THERMISTORHEATER_2 TEMP_SENSOR_2
-  #define HEATER_2_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_3 > 0
-  #define THERMISTORHEATER_3 TEMP_SENSOR_3
-  #define HEATER_3_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_BED > 0
-  #define THERMISTORBED TEMP_SENSOR_BED
-  #define BED_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_0 == -1
-  #define HEATER_0_USES_AD595
-#endif
-#if TEMP_SENSOR_1 == -1
-  #define HEATER_1_USES_AD595
-#endif
-#if TEMP_SENSOR_2 == -1
-  #define HEATER_2_USES_AD595
-#endif
-#if TEMP_SENSOR_3 == -1
-  #define HEATER_3_USES_AD595
-#endif
-#if TEMP_SENSOR_BED == -1
-  #define BED_USES_AD595
-#endif
-#if TEMP_SENSOR_0 == -2
-  #define HEATER_0_USES_MAX6675
-#endif
-#if TEMP_SENSOR_0 == 0
-  #undef HEATER_0_MINTEMP
-  #undef HEATER_0_MAXTEMP
-#endif
-#if TEMP_SENSOR_1 == 0
-  #undef HEATER_1_MINTEMP
-  #undef HEATER_1_MAXTEMP
-#endif
-#if TEMP_SENSOR_2 == 0
-  #undef HEATER_2_MINTEMP
-  #undef HEATER_2_MAXTEMP
-#endif
-#if TEMP_SENSOR_3 == 0
-  #undef HEATER_3_MINTEMP
-  #undef HEATER_3_MAXTEMP
-#endif
-#if TEMP_SENSOR_BED == 0
-  #undef BED_MINTEMP
-  #undef BED_MAXTEMP
-#endif
-
+#include "Conditionals.h"
+#include "SanityCheck.h"
 
-#endif //__CONFIGURATION_ADV_H
+#endif //CONFIGURATION_ADV_H

Marlin/example_configurations/SCARA/Configuration.h

   // #define ENDSTOPPULLUP_ZMIN
 #endif
 
-#ifdef ENDSTOPPULLUPS
-  #define ENDSTOPPULLUP_XMAX
-  #define ENDSTOPPULLUP_YMAX
-  #define ENDSTOPPULLUP_ZMAX
-  #define ENDSTOPPULLUP_XMIN
-  #define ENDSTOPPULLUP_YMIN
-  #define ENDSTOPPULLUP_ZMIN
-#endif
-
 // The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
 const bool X_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
 const bool Y_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
 #define Z_MAX_POS 225
 #define Z_MIN_POS MANUAL_Z_HOME_POS
 
-#define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS)
-#define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS)
-#define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)
+//===========================================================================
+//============================= Filament Runout Sensor ======================
+//===========================================================================
+//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
+                                 // In RAMPS uses servo pin 2. Can be changed in pins file. For other boards pin definition should be made.
+                                 // It is assumed that when logic high = filament available
+                                 //                    when logic  low = filament ran out
+//const bool FIL_RUNOUT_INVERTING = true;  // Should be uncommented and true or false should assigned
+//#define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
+
+//===========================================================================
+//============================ Manual Bed Leveling ==========================
+//===========================================================================
+
+// #define MANUAL_BED_LEVELING  // Add display menu option for bed leveling
+// #define MESH_BED_LEVELING    // Enable mesh bed leveling
 
+#if defined(MESH_BED_LEVELING)
+  #define MESH_MIN_X 10
+  #define MESH_MAX_X (X_MAX_POS - MESH_MIN_X)
+  #define MESH_MIN_Y 10
+  #define MESH_MAX_Y (Y_MAX_POS - MESH_MIN_Y)
+  #define MESH_NUM_X_POINTS 3  // Don't use more than 7 points per axis, implementation limited
+  #define MESH_NUM_Y_POINTS 3
+  #define MESH_HOME_SEARCH_Z 4  // Z after Home, bed somewhere below but above 0.0
+#endif  // MESH_BED_LEVELING
 
 //===========================================================================
 //============================= Bed Auto Leveling ===========================
 
   #ifdef AUTO_BED_LEVELING_GRID
 
-    // Use one of these defines to specify the origin
-    // for a topographical map to be printed for your bed.
-    enum { OriginBackLeft, OriginFrontLeft, OriginBackRight, OriginFrontRight };
-    #define TOPO_ORIGIN OriginFrontLeft
-
-    // The edges of the rectangle in which to probe
     #define LEFT_PROBE_BED_POSITION 15
     #define RIGHT_PROBE_BED_POSITION 170
     #define FRONT_PROBE_BED_POSITION 20
 // REMEMBER TO INSTALL LiquidCrystal_I2C.h in your ARDUINO library folder: https://github.com/kiyoshigawa/LiquidCrystal_I2C
 //#define RA_CONTROL_PANEL
 
-//automatic expansion
-#if defined (MAKRPANEL)
- #define DOGLCD
- #define SDSUPPORT
- #define ULTIPANEL
- #define NEWPANEL
- #define DEFAULT_LCD_CONTRAST 17
-#endif
-
-#if defined(miniVIKI) || defined(VIKI2)
- #define ULTRA_LCD  //general LCD support, also 16x2
- #define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
- #define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
- 
-  #ifdef miniVIKI
-   #define DEFAULT_LCD_CONTRAST 95
-  #else
-   #define DEFAULT_LCD_CONTRAST 40
-  #endif
-  
- #define ENCODER_PULSES_PER_STEP 4
- #define ENCODER_STEPS_PER_MENU_ITEM 1
-#endif
-
-#if defined (PANEL_ONE)
- #define SDSUPPORT
- #define ULTIMAKERCONTROLLER
-#endif
-
-#if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
- #define DOGLCD
- #define U8GLIB_ST7920
- #define REPRAP_DISCOUNT_SMART_CONTROLLER
-#endif
-
-#if defined(ULTIMAKERCONTROLLER) || defined(REPRAP_DISCOUNT_SMART_CONTROLLER) || defined(G3D_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
-#endif
-
-#if defined(REPRAPWORLD_KEYPAD)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
-#if defined(RA_CONTROL_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
- #define LCD_I2C_TYPE_PCA8574
- #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-#endif
-
-//I2C PANELS
+/**
+ * I2C Panels
+ */
 
 //#define LCD_I2C_SAINSMART_YWROBOT
-#ifdef LCD_I2C_SAINSMART_YWROBOT
-  // This uses the LiquidCrystal_I2C library ( https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home )
-  // Make sure it is placed in the Arduino libraries directory.
-  #define LCD_I2C_TYPE_PCF8575
-  #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
 //#define LCD_I2C_PANELOLU2
-#ifdef LCD_I2C_PANELOLU2
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
-  // Note: The PANELOLU2 encoder click input can either be directly connected to a pin
-  //       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
-  #define NEWPANEL
-  #define ULTIPANEL
-
-  #ifndef ENCODER_PULSES_PER_STEP
-	#define ENCODER_PULSES_PER_STEP 4
-  #endif
-
-  #ifndef ENCODER_STEPS_PER_MENU_ITEM
-	#define ENCODER_STEPS_PER_MENU_ITEM 1
-  #endif
-
-
-  #ifdef LCD_USE_I2C_BUZZER
-	#define LCD_FEEDBACK_FREQUENCY_HZ 1000
-	#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100
-  #endif
-
-#endif
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
 //#define LCD_I2C_VIKI
-#ifdef LCD_I2C_VIKI
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // Note: The pause/stop/resume LCD button pin should be connected to the Arduino
-  //       BTN_ENC pin (or set BTN_ENC to -1 if not used)
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD (requires LiquidTWI2 v1.2.3 or later)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // Shift register panels
 // ---------------------
 // https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection 
 
 //#define SAV_3DLCD
-#ifdef SAV_3DLCD
-   #define SR_LCD_2W_NL    // Non latching 2 wire shiftregister
-   #define NEWPANEL
-   #define ULTIPANEL
-#endif
-
-
-#ifdef ULTIPANEL
-//  #define NEWPANEL  //enable this if you have a click-encoder panel
-  #define SDSUPPORT
-  #define ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the DOG graphic display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 20
-    #define LCD_HEIGHT 4
-  #endif
-#else //no panel but just LCD
-  #ifdef ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 16
-    #define LCD_HEIGHT 2
-  #endif
-  #endif
-#endif
-
-// default LCD contrast for dogm-like LCD displays
-#ifdef DOGLCD
-# ifndef DEFAULT_LCD_CONTRAST
-#  define DEFAULT_LCD_CONTRAST 32
-# endif
-#endif
 
 // Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
 //#define FAST_PWM_FAN
 
-// Temperature status LEDs that display the hotend and bet temperature.
-// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
-// Otherwise the RED led is on. There is 1C hysteresis.
-//#define TEMP_STAT_LEDS
-
 // Use software PWM to drive the fan, as for the heaters. This uses a very low frequency
 // which is not ass annoying as with the hardware PWM. On the other hand, if this frequency
 // is too low, you should also increment SOFT_PWM_SCALE.
 // at zero value, there are 128 effective control positions.
 #define SOFT_PWM_SCALE 0
 
+// Temperature status LEDs that display the hotend and bet temperature.
+// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
+// Otherwise the RED led is on. There is 1C hysteresis.
+//#define TEMP_STAT_LEDS
+
 // M240  Triggers a camera by emulating a Canon RC-1 Remote
 // Data from: http://www.doc-diy.net/photo/rc-1_hacked/
 // #define PHOTOGRAPH_PIN     23
 #include "Configuration_adv.h"
 #include "thermistortables.h"
 
-#endif //__CONFIGURATION_H
+#endif //CONFIGURATION_H

Marlin/example_configurations/SCARA/Configuration_adv.h

 #ifndef CONFIGURATION_ADV_H
 #define CONFIGURATION_ADV_H
 
+#include "Conditionals.h"
+
 //===========================================================================
 //=============================Thermal Settings  ============================
 //===========================================================================
 
 #define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing
 
-
-//// AUTOSET LOCATIONS OF LIMIT SWITCHES
-//// Added by ZetaPhoenix 09-15-2012
-#ifdef MANUAL_HOME_POSITIONS  // Use manual limit switch locations
-  #define X_HOME_POS MANUAL_X_HOME_POS
-  #define Y_HOME_POS MANUAL_Y_HOME_POS
-  #define Z_HOME_POS MANUAL_Z_HOME_POS
-#else //Set min/max homing switch positions based upon homing direction and min/max travel limits
-  //X axis
-  #if X_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * -0.5
-    #else
-      #define X_HOME_POS X_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * 0.5
-    #else
-      #define X_HOME_POS X_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //X_HOME_DIR == -1
-
-  //Y axis
-  #if Y_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * -0.5
-    #else
-      #define Y_HOME_POS Y_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * 0.5
-    #else
-      #define Y_HOME_POS Y_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //Y_HOME_DIR == -1
-
-  // Z axis
-  #if Z_HOME_DIR == -1 //BED_CENTER_AT_0_0 not used
-    #define Z_HOME_POS Z_MIN_POS
-  #else
-    #define Z_HOME_POS Z_MAX_POS
-  #endif //Z_HOME_DIR == -1
-#endif //End auto min/max positions
-//END AUTOSET LOCATIONS OF LIMIT SWITCHES -ZP
-
-
 //#define Z_LATE_ENABLE // Enable Z the last moment. Needed if your Z driver overheats.
 
 // A single Z stepper driver is usually used to drive 2 stepper motors.
 // On a RAMPS (or other 5 driver) motherboard, using this feature will limit you to using 1 extruder.
 //#define Z_DUAL_STEPPER_DRIVERS
 
-#ifdef Z_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
 // Same again but for Y Axis.
 //#define Y_DUAL_STEPPER_DRIVERS
 
 // Define if the two Y drives need to rotate in opposite directions
 #define INVERT_Y2_VS_Y_DIR true
 
-#ifdef Y_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
-#if defined (Z_DUAL_STEPPER_DRIVERS) && defined (Y_DUAL_STEPPER_DRIVERS)
-  #error "You cannot have dual drivers for both Y and Z"
-#endif
-
 // Enable this for dual x-carriage printers.
 // A dual x-carriage design has the advantage that the inactive extruder can be parked which
 // prevents hot-end ooze contaminating the print. It also reduces the weight of each x-carriage
 #define Z_HOME_RETRACT_MM 3
 #define HOMING_BUMP_DIVISOR {10, 10, 20}  // Re-Bump Speed Divisor (Divides the Homing Feedrate)
 //#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
-#ifdef SCARA
-	#define QUICK_HOME //SCARA needs Quickhome
-#endif
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
 #define INVERT_Z_STEP_PIN false
 #define INVERT_E_STEP_PIN false
 
-//default stepper release if idle. Set to 0 to deactivate.
+// Default stepper release if idle. Set to 0 to deactivate.
 #define DEFAULT_STEPPER_DEACTIVE_TIME 240
 
 #define DEFAULT_MINIMUMFEEDRATE       0.0     // minimum feedrate
 #define DEFAULT_MINTRAVELFEEDRATE     0.0
 
-// Feedrates for manual moves along X, Y, Z, E from panel
-#ifdef ULTIPANEL
-#define MANUAL_FEEDRATE {50*60, 50*60, 10*60, 60}  // set the speeds for manual moves (mm/min)
-#endif
-
-//Comment to disable setting feedrate multiplier via encoder
 #ifdef ULTIPANEL
-    #define ULTIPANEL_FEEDMULTIPLY
+  #define MANUAL_FEEDRATE {50*60, 50*60, 10*60, 60}  // Feedrates for manual moves along X, Y, Z, E from panel
+  #define ULTIPANEL_FEEDMULTIPLY  // Comment to disable setting feedrate multiplier via encoder
 #endif
 
 // minimum time in microseconds that a movement needs to take if the buffer is emptied.
 
 // If defined the movements slow down when the look ahead buffer is only half full
 //#define SLOWDOWN
-#ifdef SCARA
- #undef SLOWDOWN
-#endif
+
 // Frequency limit
 // See nophead's blog for more info
 // Not working O
 // if unwanted behavior is observed on a user's machine when running at very slow speeds.
 #define MINIMUM_PLANNER_SPEED 0.05// (mm/sec)
 
-// MS1 MS2 Stepper Driver Microstepping mode table
-#define MICROSTEP1 LOW,LOW
-#define MICROSTEP2 HIGH,LOW
-#define MICROSTEP4 LOW,HIGH
-#define MICROSTEP8 HIGH,HIGH
-#define MICROSTEP16 HIGH,HIGH
-
 // Microstep setting (Only functional when stepper driver microstep pins are connected to MCU.
 #define MICROSTEP_MODES {16,16,16,16,16} // [1,2,4,8,16]
 
   #define BABYSTEP_XY  //not only z, but also XY in the menu. more clutter, more functions
   #define BABYSTEP_INVERT_Z false  //true for inverse movements in Z
   #define BABYSTEP_Z_MULTIPLICATOR 2 //faster z movements
-
-  #ifdef COREXY
-    #error BABYSTEPPING not implemented for COREXY yet.
-  #endif
-
-  #ifdef DELTA
-    #ifdef BABYSTEP_XY
-      #error BABYSTEPPING only implemented for Z axis on deltabots.
-    #endif
-  #endif
-  
-  #ifdef SCARA
-    #error BABYSTEPPING not implemented for SCARA yet.
-  #endif
-  
 #endif
 
 // extruder advance constant (s2/mm3)
 // be commented out otherwise
 #define SDCARDDETECTINVERTED
 
-#ifdef ULTIPANEL
- #undef SDCARDDETECTINVERTED
-#endif
-
-// Power Signal Control Definitions
-// By default use ATX definition
-#ifndef POWER_SUPPLY
-  #define POWER_SUPPLY 1
-#endif
-// 1 = ATX
-#if (POWER_SUPPLY == 1)
-  #define PS_ON_AWAKE  LOW
-  #define PS_ON_ASLEEP HIGH
-#endif
-// 2 = X-Box 360 203W
-#if (POWER_SUPPLY == 2)
-  #define PS_ON_AWAKE  HIGH
-  #define PS_ON_ASLEEP LOW
-#endif
-
 // Control heater 0 and heater 1 in parallel.
 //#define HEATERS_PARALLEL
 
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-//adds support for experimental filament exchange support M600; requires display
+// Add support for experimental filament exchange support M600; requires display
 #ifdef ULTIPANEL
-  #define FILAMENTCHANGEENABLE
+  //#define FILAMENTCHANGEENABLE
   #ifdef FILAMENTCHANGEENABLE
     #define FILAMENTCHANGE_XPOS 3
     #define FILAMENTCHANGE_YPOS 3
   #endif
 #endif
 
-#ifdef FILAMENTCHANGEENABLE
-  #ifdef EXTRUDER_RUNOUT_PREVENT
-    #error EXTRUDER_RUNOUT_PREVENT currently incompatible with FILAMENTCHANGE
-  #endif
-#endif
-
-//===========================================================================
-//=============================  Define Defines  ============================
-//===========================================================================
-#if EXTRUDERS > 1 && defined TEMP_SENSOR_1_AS_REDUNDANT
-  #error "You cannot use TEMP_SENSOR_1_AS_REDUNDANT if EXTRUDERS > 1"
-#endif
-
-#if EXTRUDERS > 1 && defined HEATERS_PARALLEL
-  #error "You cannot use HEATERS_PARALLEL if EXTRUDERS > 1"
-#endif
-
-#if TEMP_SENSOR_0 > 0
-  #define THERMISTORHEATER_0 TEMP_SENSOR_0
-  #define HEATER_0_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_1 > 0
-  #define THERMISTORHEATER_1 TEMP_SENSOR_1
-  #define HEATER_1_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_2 > 0
-  #define THERMISTORHEATER_2 TEMP_SENSOR_2
-  #define HEATER_2_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_3 > 0
-  #define THERMISTORHEATER_3 TEMP_SENSOR_3
-  #define HEATER_3_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_BED > 0
-  #define THERMISTORBED TEMP_SENSOR_BED
-  #define BED_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_0 == -1
-  #define HEATER_0_USES_AD595
-#endif
-#if TEMP_SENSOR_1 == -1
-  #define HEATER_1_USES_AD595
-#endif
-#if TEMP_SENSOR_2 == -1
-  #define HEATER_2_USES_AD595
-#endif
-#if TEMP_SENSOR_3 == -1
-  #define HEATER_3_USES_AD595
-#endif
-#if TEMP_SENSOR_BED == -1
-  #define BED_USES_AD595
-#endif
-#if TEMP_SENSOR_0 == -2
-  #define HEATER_0_USES_MAX6675
-#endif
-#if TEMP_SENSOR_0 == 0
-  #undef HEATER_0_MINTEMP
-  #undef HEATER_0_MAXTEMP
-#endif
-#if TEMP_SENSOR_1 == 0
-  #undef HEATER_1_MINTEMP
-  #undef HEATER_1_MAXTEMP
-#endif
-#if TEMP_SENSOR_2 == 0
-  #undef HEATER_2_MINTEMP
-  #undef HEATER_2_MAXTEMP
-#endif
-#if TEMP_SENSOR_3 == 0
-  #undef HEATER_3_MINTEMP
-  #undef HEATER_3_MAXTEMP
-#endif
-#if TEMP_SENSOR_BED == 0
-  #undef BED_MINTEMP
-  #undef BED_MAXTEMP
-#endif
-
+#include "Conditionals.h"
+#include "SanityCheck.h"
 
-#endif //__CONFIGURATION_ADV_H
+#endif //CONFIGURATION_ADV_H

Marlin/example_configurations/WITBOX/Configuration.h

   // #define ENDSTOPPULLUP_ZMIN
 #endif
 
-#ifdef ENDSTOPPULLUPS
-  #define ENDSTOPPULLUP_XMAX
-  #define ENDSTOPPULLUP_YMAX
-  #define ENDSTOPPULLUP_ZMAX
-  #define ENDSTOPPULLUP_XMIN
-  #define ENDSTOPPULLUP_YMIN
-  #define ENDSTOPPULLUP_ZMIN
-#endif
-
 // The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
 const bool X_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
 const bool Y_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
 #define Z_MAX_POS 200
 #define Z_MIN_POS 0
 
-#define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS)
-#define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS)
-#define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)
+//===========================================================================
+//============================= Filament Runout Sensor ======================
+//===========================================================================
+//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
+                                 // In RAMPS uses servo pin 2. Can be changed in pins file. For other boards pin definition should be made.
+                                 // It is assumed that when logic high = filament available
+                                 //                    when logic  low = filament ran out
+//const bool FIL_RUNOUT_INVERTING = true;  // Should be uncommented and true or false should assigned
+//#define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
+
+//===========================================================================
+//============================ Manual Bed Leveling ==========================
+//===========================================================================
 
+// #define MANUAL_BED_LEVELING  // Add display menu option for bed leveling
+// #define MESH_BED_LEVELING    // Enable mesh bed leveling
+
+#if defined(MESH_BED_LEVELING)
+  #define MESH_MIN_X 10
+  #define MESH_MAX_X (X_MAX_POS - MESH_MIN_X)
+  #define MESH_MIN_Y 10
+  #define MESH_MAX_Y (Y_MAX_POS - MESH_MIN_Y)
+  #define MESH_NUM_X_POINTS 3  // Don't use more than 7 points per axis, implementation limited
+  #define MESH_NUM_Y_POINTS 3
+  #define MESH_HOME_SEARCH_Z 4  // Z after Home, bed somewhere below but above 0.0
+#endif  // MESH_BED_LEVELING
 
 //===========================================================================
 //============================= Bed Auto Leveling ===========================
 
   #ifdef AUTO_BED_LEVELING_GRID
 
-    // Use one of these defines to specify the origin
-    // for a topographical map to be printed for your bed.
-    enum { OriginBackLeft, OriginFrontLeft, OriginBackRight, OriginFrontRight };
-    #define TOPO_ORIGIN OriginFrontLeft
-
-    // The edges of the rectangle in which to probe
     #define LEFT_PROBE_BED_POSITION 15
     #define RIGHT_PROBE_BED_POSITION 170
     #define FRONT_PROBE_BED_POSITION 20
 // REMEMBER TO INSTALL LiquidCrystal_I2C.h in your ARDUINO library folder: https://github.com/kiyoshigawa/LiquidCrystal_I2C
 //#define RA_CONTROL_PANEL
 
-//automatic expansion
-#if defined (MAKRPANEL)
- #define DOGLCD
- #define SDSUPPORT
- #define ULTIPANEL
- #define NEWPANEL
- #define DEFAULT_LCD_CONTRAST 17
-#endif
-
-#if defined(miniVIKI) || defined(VIKI2)
- #define ULTRA_LCD  //general LCD support, also 16x2
- #define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
- #define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
- 
-  #ifdef miniVIKI
-   #define DEFAULT_LCD_CONTRAST 95
-  #else
-   #define DEFAULT_LCD_CONTRAST 40
-  #endif
-  
- #define ENCODER_PULSES_PER_STEP 4
- #define ENCODER_STEPS_PER_MENU_ITEM 1
-#endif
-
-#if defined (PANEL_ONE)
- #define SDSUPPORT
- #define ULTIMAKERCONTROLLER
-#endif
-
-#if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
- #define DOGLCD
- #define U8GLIB_ST7920
- #define REPRAP_DISCOUNT_SMART_CONTROLLER
-#endif
-
-#if defined(ULTIMAKERCONTROLLER) || defined(REPRAP_DISCOUNT_SMART_CONTROLLER) || defined(G3D_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
-#endif
-
-#if defined(REPRAPWORLD_KEYPAD)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
-#if defined(RA_CONTROL_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
- #define LCD_I2C_TYPE_PCA8574
- #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-#endif
-
-//I2C PANELS
+/**
+ * I2C Panels
+ */
 
 //#define LCD_I2C_SAINSMART_YWROBOT
-#ifdef LCD_I2C_SAINSMART_YWROBOT
-  // This uses the LiquidCrystal_I2C library ( https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home )
-  // Make sure it is placed in the Arduino libraries directory.
-  #define LCD_I2C_TYPE_PCF8575
-  #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
 //#define LCD_I2C_PANELOLU2
-#ifdef LCD_I2C_PANELOLU2
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
-  // Note: The PANELOLU2 encoder click input can either be directly connected to a pin
-  //       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
-  #define NEWPANEL
-  #define ULTIPANEL
-
-  #ifndef ENCODER_PULSES_PER_STEP
-	#define ENCODER_PULSES_PER_STEP 4
-  #endif
-
-  #ifndef ENCODER_STEPS_PER_MENU_ITEM
-	#define ENCODER_STEPS_PER_MENU_ITEM 1
-  #endif
-
-
-  #ifdef LCD_USE_I2C_BUZZER
-	#define LCD_FEEDBACK_FREQUENCY_HZ 1000
-	#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100
-  #endif
-
-#endif
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
 //#define LCD_I2C_VIKI
-#ifdef LCD_I2C_VIKI
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // Note: The pause/stop/resume LCD button pin should be connected to the Arduino
-  //       BTN_ENC pin (or set BTN_ENC to -1 if not used)
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD (requires LiquidTWI2 v1.2.3 or later)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // Shift register panels
 // ---------------------
 // https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection 
 
 //#define SAV_3DLCD
-#ifdef SAV_3DLCD
-   #define SR_LCD_2W_NL    // Non latching 2 wire shiftregister
-   #define NEWPANEL
-   #define ULTIPANEL
-#endif
-
-
-#ifdef ULTIPANEL
-//  #define NEWPANEL  //enable this if you have a click-encoder panel
-  #define SDSUPPORT
-  #define ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the DOG graphic display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 20
-    #define LCD_HEIGHT 4
-  #endif
-#else //no panel but just LCD
-  #ifdef ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 16
-    #define LCD_HEIGHT 2
-  #endif
-  #endif
-#endif
-
-// default LCD contrast for dogm-like LCD displays
-#ifdef DOGLCD
-# ifndef DEFAULT_LCD_CONTRAST
-#  define DEFAULT_LCD_CONTRAST 32
-# endif
-#endif
 
 // Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
 //#define FAST_PWM_FAN
 
-// Temperature status LEDs that display the hotend and bet temperature.
-// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
-// Otherwise the RED led is on. There is 1C hysteresis.
-//#define TEMP_STAT_LEDS
-
 // Use software PWM to drive the fan, as for the heaters. This uses a very low frequency
 // which is not ass annoying as with the hardware PWM. On the other hand, if this frequency
 // is too low, you should also increment SOFT_PWM_SCALE.
 // at zero value, there are 128 effective control positions.
 #define SOFT_PWM_SCALE 0
 
+// Temperature status LEDs that display the hotend and bet temperature.
+// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
+// Otherwise the RED led is on. There is 1C hysteresis.
+//#define TEMP_STAT_LEDS
+
 // M240  Triggers a camera by emulating a Canon RC-1 Remote
 // Data from: http://www.doc-diy.net/photo/rc-1_hacked/
 // #define PHOTOGRAPH_PIN     23
 #include "Configuration_adv.h"
 #include "thermistortables.h"
 
-#endif //__CONFIGURATION_H
+#endif //CONFIGURATION_H

Marlin/example_configurations/WITBOX/Configuration_adv.h

 #ifndef CONFIGURATION_ADV_H
 #define CONFIGURATION_ADV_H
 
+#include "Conditionals.h"
+
 //===========================================================================
 //=============================Thermal Settings  ============================
 //===========================================================================
 
 //#define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing
 
-
-//// AUTOSET LOCATIONS OF LIMIT SWITCHES
-//// Added by ZetaPhoenix 09-15-2012
-#ifdef MANUAL_HOME_POSITIONS  // Use manual limit switch locations
-  #define X_HOME_POS MANUAL_X_HOME_POS
-  #define Y_HOME_POS MANUAL_Y_HOME_POS
-  #define Z_HOME_POS MANUAL_Z_HOME_POS
-#else //Set min/max homing switch positions based upon homing direction and min/max travel limits
-  //X axis
-  #if X_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * -0.5
-    #else
-      #define X_HOME_POS X_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * 0.5
-    #else
-      #define X_HOME_POS X_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //X_HOME_DIR == -1
-
-  //Y axis
-  #if Y_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * -0.5
-    #else
-      #define Y_HOME_POS Y_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * 0.5
-    #else
-      #define Y_HOME_POS Y_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //Y_HOME_DIR == -1
-
-  // Z axis
-  #if Z_HOME_DIR == -1 //BED_CENTER_AT_0_0 not used
-    #define Z_HOME_POS Z_MIN_POS
-  #else
-    #define Z_HOME_POS Z_MAX_POS
-  #endif //Z_HOME_DIR == -1
-#endif //End auto min/max positions
-//END AUTOSET LOCATIONS OF LIMIT SWITCHES -ZP
-
-
 //#define Z_LATE_ENABLE // Enable Z the last moment. Needed if your Z driver overheats.
 
 // A single Z stepper driver is usually used to drive 2 stepper motors.
 // On a RAMPS (or other 5 driver) motherboard, using this feature will limit you to using 1 extruder.
 //#define Z_DUAL_STEPPER_DRIVERS
 
-#ifdef Z_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
 // Same again but for Y Axis.
 //#define Y_DUAL_STEPPER_DRIVERS
 
 // Define if the two Y drives need to rotate in opposite directions
 #define INVERT_Y2_VS_Y_DIR true
 
-#ifdef Y_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
-#if defined (Z_DUAL_STEPPER_DRIVERS) && defined (Y_DUAL_STEPPER_DRIVERS)
-  #error "You cannot have dual drivers for both Y and Z"
-#endif
-
 // Enable this for dual x-carriage printers.
 // A dual x-carriage design has the advantage that the inactive extruder can be parked which
 // prevents hot-end ooze contaminating the print. It also reduces the weight of each x-carriage
 #define INVERT_Z_STEP_PIN false
 #define INVERT_E_STEP_PIN false
 
-//default stepper release if idle. Set to 0 to deactivate.
+// Default stepper release if idle. Set to 0 to deactivate.
 #define DEFAULT_STEPPER_DEACTIVE_TIME 60
 
 #define DEFAULT_MINIMUMFEEDRATE       0.0     // minimum feedrate
 #define DEFAULT_MINTRAVELFEEDRATE     0.0
 
-// Feedrates for manual moves along X, Y, Z, E from panel
 #ifdef ULTIPANEL
-#define MANUAL_FEEDRATE {120*60, 120*60, 18*60, 60}  // set the speeds for manual moves (mm/min)
-#endif
-
-//Comment to disable setting feedrate multiplier via encoder
-#ifdef ULTIPANEL
-    #define ULTIPANEL_FEEDMULTIPLY
+  #define MANUAL_FEEDRATE {120*60, 120*60, 18*60, 60}  // Feedrates for manual moves along X, Y, Z, E from panel
+  #define ULTIPANEL_FEEDMULTIPLY  // Comment to disable setting feedrate multiplier via encoder
 #endif
 
 // minimum time in microseconds that a movement needs to take if the buffer is emptied.
 // if unwanted behavior is observed on a user's machine when running at very slow speeds.
 #define MINIMUM_PLANNER_SPEED 0.05// (mm/sec)
 
-// MS1 MS2 Stepper Driver Microstepping mode table
-#define MICROSTEP1 LOW,LOW
-#define MICROSTEP2 HIGH,LOW
-#define MICROSTEP4 LOW,HIGH
-#define MICROSTEP8 HIGH,HIGH
-#define MICROSTEP16 HIGH,HIGH
-
 // Microstep setting (Only functional when stepper driver microstep pins are connected to MCU.
 #define MICROSTEP_MODES {16,16,16,16,16} // [1,2,4,8,16]
 
   #define PROGRESS_MSG_EXPIRE   0
   // Enable this to show messages for MSG_TIME then hide them
   //#define PROGRESS_MSG_ONCE
-  #ifdef DOGLCD
-    #warning LCD_PROGRESS_BAR does not apply to graphical displays at this time.
-  #endif
-  #ifdef FILAMENT_LCD_DISPLAY
-    #error LCD_PROGRESS_BAR and FILAMENT_LCD_DISPLAY are not fully compatible. Comment out this line to use both.
-  #endif
 #endif
 
 // The hardware watchdog should reset the microcontroller disabling all outputs, in case the firmware gets stuck and doesn't do temperature regulation.
   #define BABYSTEP_XY  //not only z, but also XY in the menu. more clutter, more functions
   #define BABYSTEP_INVERT_Z false  //true for inverse movements in Z
   #define BABYSTEP_Z_MULTIPLICATOR 2 //faster z movements
-
-  #ifdef COREXY
-    #error BABYSTEPPING not implemented for COREXY yet.
-  #endif
-
-  #ifdef DELTA
-    #ifdef BABYSTEP_XY
-      #error BABYSTEPPING only implemented for Z axis on deltabots.
-    #endif
-  #endif
 #endif
 
 // extruder advance constant (s2/mm3)
 
 #ifdef ADVANCE
   #define EXTRUDER_ADVANCE_K .0
-
   #define D_FILAMENT 1.75
   #define STEPS_MM_E 100.47095761381482
-  #define EXTRUSION_AREA (0.25 * D_FILAMENT * D_FILAMENT * 3.14159)
-  #define STEPS_PER_CUBIC_MM_E (axis_steps_per_unit[E_AXIS]/ EXTRUSION_AREA)
-
 #endif // ADVANCE
 
 // Arc interpretation settings:
 // be commented out otherwise
 #define SDCARDDETECTINVERTED
 
-#ifdef ULTIPANEL
- #undef SDCARDDETECTINVERTED
-#endif
-
-// Power Signal Control Definitions
-// By default use ATX definition
-#ifndef POWER_SUPPLY
-  #define POWER_SUPPLY 1
-#endif
-// 1 = ATX
-#if (POWER_SUPPLY == 1)
-  #define PS_ON_AWAKE  LOW
-  #define PS_ON_ASLEEP HIGH
-#endif
-// 2 = X-Box 360 203W
-#if (POWER_SUPPLY == 2)
-  #define PS_ON_AWAKE  HIGH
-  #define PS_ON_ASLEEP LOW
-#endif
-
 // Control heater 0 and heater 1 in parallel.
 //#define HEATERS_PARALLEL
 
   #define RETRACT_RECOVER_FEEDRATE 8*60     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-//adds support for experimental filament exchange support M600; requires display
+// Add support for experimental filament exchange support M600; requires display
 #ifdef ULTIPANEL
-  #define FILAMENTCHANGEENABLE
+  //#define FILAMENTCHANGEENABLE
   #ifdef FILAMENTCHANGEENABLE
     #define FILAMENTCHANGE_XPOS 3
     #define FILAMENTCHANGE_YPOS 3
   #endif
 #endif
 
-#ifdef FILAMENTCHANGEENABLE
-  #ifdef EXTRUDER_RUNOUT_PREVENT
-    #error EXTRUDER_RUNOUT_PREVENT currently incompatible with FILAMENTCHANGE
-  #endif
-#endif
-
-//===========================================================================
-//=============================  Define Defines  ============================
-//===========================================================================
-
-#if defined (ENABLE_AUTO_BED_LEVELING) && defined (DELTA)
-  #error "Bed Auto Leveling is still not compatible with Delta Kinematics."
-#endif
-
-#if EXTRUDERS > 1 && defined TEMP_SENSOR_1_AS_REDUNDANT
-  #error "You cannot use TEMP_SENSOR_1_AS_REDUNDANT if EXTRUDERS > 1"
-#endif
-
-#if EXTRUDERS > 1 && defined HEATERS_PARALLEL
-  #error "You cannot use HEATERS_PARALLEL if EXTRUDERS > 1"
-#endif
-
-#if TEMP_SENSOR_0 > 0
-  #define THERMISTORHEATER_0 TEMP_SENSOR_0
-  #define HEATER_0_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_1 > 0
-  #define THERMISTORHEATER_1 TEMP_SENSOR_1
-  #define HEATER_1_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_2 > 0
-  #define THERMISTORHEATER_2 TEMP_SENSOR_2
-  #define HEATER_2_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_3 > 0
-  #define THERMISTORHEATER_3 TEMP_SENSOR_3
-  #define HEATER_3_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_BED > 0
-  #define THERMISTORBED TEMP_SENSOR_BED
-  #define BED_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_0 == -1
-  #define HEATER_0_USES_AD595
-#endif
-#if TEMP_SENSOR_1 == -1
-  #define HEATER_1_USES_AD595
-#endif
-#if TEMP_SENSOR_2 == -1
-  #define HEATER_2_USES_AD595
-#endif
-#if TEMP_SENSOR_3 == -1
-  #define HEATER_3_USES_AD595
-#endif
-#if TEMP_SENSOR_BED == -1
-  #define BED_USES_AD595
-#endif
-#if TEMP_SENSOR_0 == -2
-  #define HEATER_0_USES_MAX6675
-#endif
-#if TEMP_SENSOR_0 == 0
-  #undef HEATER_0_MINTEMP
-  #undef HEATER_0_MAXTEMP
-#endif
-#if TEMP_SENSOR_1 == 0
-  #undef HEATER_1_MINTEMP
-  #undef HEATER_1_MAXTEMP
-#endif
-#if TEMP_SENSOR_2 == 0
-  #undef HEATER_2_MINTEMP
-  #undef HEATER_2_MAXTEMP
-#endif
-#if TEMP_SENSOR_3 == 0
-  #undef HEATER_3_MINTEMP
-  #undef HEATER_3_MAXTEMP
-#endif
-#if TEMP_SENSOR_BED == 0
-  #undef BED_MINTEMP
-  #undef BED_MAXTEMP
-#endif
-
+#include "Conditionals.h"
+#include "SanityCheck.h"
 
-#endif //__CONFIGURATION_ADV_H
+#endif //CONFIGURATION_ADV_H

Marlin/example_configurations/delta/generic/Configuration.h

 // 10 is 100k RS thermistor 198-961 (4.7k pullup)
 // 11 is 100k beta 3950 1% thermistor (4.7k pullup)
 // 12 is 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup) (calibrated for Makibox hot bed)
-// 13 is 100k Hisens 3950  1% up to 300°C for hotend "Simple ONE " & "Hotend "All In ONE"
+// 13 is 100k Hisens 3950  1% up to 300°C for hotend "Simple ONE " & "Hotend "All In ONE" 
 // 20 is the PT100 circuit found in the Ultimainboard V2.x
 // 60 is 100k Maker's Tool Works Kapton Bed Thermistor beta=3950
 //
 // 1010 is Pt1000 with 1k pullup (non standard)
 // 147 is Pt100 with 4k7 pullup
 // 110 is Pt100 with 1k pullup (non standard)
-// 998 and 999 are Dummy Tables. They will ALWAYS read 25°C or the temperature defined below.
+// 998 and 999 are Dummy Tables. They will ALWAYS read 25°C or the temperature defined below. 
 //     Use it for Testing or Development purposes. NEVER for production machine.
 //     #define DUMMY_THERMISTOR_998_VALUE 25
 //     #define DUMMY_THERMISTOR_999_VALUE 100
 The system will turn the heater on forever, burning up the filament and anything
 else around.
 
-After the temperature reaches the target for the first time, this feature will
-start measuring for how long the current temperature stays below the target
+After the temperature reaches the target for the first time, this feature will 
+start measuring for how long the current temperature stays below the target 
 minus _HYSTERESIS (set_temperature - THERMAL_RUNAWAY_PROTECTION_HYSTERESIS).
 
 If it stays longer than _PERIOD, it means the thermistor temperature
 cannot catch up with the target, so something *may be* wrong. Then, to be on the
 safe side, the system will he halt.
 
-Bear in mind the count down will just start AFTER the first time the
+Bear in mind the count down will just start AFTER the first time the 
 thermistor temperature is over the target, so you will have no problem if
 your extruder heater takes 2 minutes to hit the target on heating.
 
   // #define ENDSTOPPULLUP_ZMIN
 #endif
 
-#ifdef ENDSTOPPULLUPS
-  #define ENDSTOPPULLUP_XMAX
-  #define ENDSTOPPULLUP_YMAX
-  #define ENDSTOPPULLUP_ZMAX
-  #define ENDSTOPPULLUP_XMIN
-  #define ENDSTOPPULLUP_YMIN
-  #define ENDSTOPPULLUP_ZMIN
-#endif
-
 // The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
 const bool X_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
 const bool Y_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
 #define Z_MAX_POS MANUAL_Z_HOME_POS
 #define Z_MIN_POS 0
 
-#define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS)
-#define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS)
-#define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)
+//===========================================================================
+//============================= Filament Runout Sensor ======================
+//===========================================================================
+//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
+                                 // In RAMPS uses servo pin 2. Can be changed in pins file. For other boards pin definition should be made.
+                                 // It is assumed that when logic high = filament available
+                                 //                    when logic  low = filament ran out
+//const bool FIL_RUNOUT_INVERTING = true;  // Should be uncommented and true or false should assigned
+//#define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
+
+//===========================================================================
+//============================ Manual Bed Leveling ==========================
+//===========================================================================
+
+// #define MANUAL_BED_LEVELING  // Add display menu option for bed leveling
+// #define MESH_BED_LEVELING    // Enable mesh bed leveling
 
+#if defined(MESH_BED_LEVELING)
+  #define MESH_MIN_X 10
+  #define MESH_MAX_X (X_MAX_POS - MESH_MIN_X)
+  #define MESH_MIN_Y 10
+  #define MESH_MAX_Y (Y_MAX_POS - MESH_MIN_Y)
+  #define MESH_NUM_X_POINTS 3  // Don't use more than 7 points per axis, implementation limited
+  #define MESH_NUM_Y_POINTS 3
+  #define MESH_HOME_SEARCH_Z 4  // Z after Home, bed somewhere below but above 0.0
+#endif  // MESH_BED_LEVELING
 
 //===========================================================================
 //============================= Bed Auto Leveling ===========================
   #define LEFT_PROBE_BED_POSITION -DELTA_PROBABLE_RADIUS
   #define RIGHT_PROBE_BED_POSITION DELTA_PROBABLE_RADIUS
   #define BACK_PROBE_BED_POSITION DELTA_PROBABLE_RADIUS
-  #define FRONT_PROBE_BED_POSITION -DELTA_PROBABLE_RADIUS
+  #define FRONT_PROBE_BED_POSITION -DELTA_PROBABLE_RADIUS   
 
   // Non-linear bed leveling will be used.
   // Compensate by interpolating between the nearest four Z probe values for each point.
     #define Z_PROBE_ALLEN_KEY_DEPLOY_X 30
     #define Z_PROBE_ALLEN_KEY_DEPLOY_Y DELTA_PRINTABLE_RADIUS
     #define Z_PROBE_ALLEN_KEY_DEPLOY_Z 100
-
+    
     #define Z_PROBE_ALLEN_KEY_RETRACT_X     -64
     #define Z_PROBE_ALLEN_KEY_RETRACT_Y     56
     #define Z_PROBE_ALLEN_KEY_RETRACT_Z     23
     #define Z_PROBE_ALLEN_KEY_RETRACT_DEPTH 20
   #endif
-
+  
   //If defined, the Probe servo will be turned on only during movement and then turned off to avoid jerk
   //The value is the delay to turn the servo off after powered on - depends on the servo speed; 300ms is good value, but you can try lower it.
   // You MUST HAVE the SERVO_ENDSTOPS defined to use here a value higher than zero otherwise your code will not compile.
 // in ultralcd.cpp@lcd_delta_calibrate_menu()
 // #define DELTA_CALIBRATION_MENU
 
-//automatic expansion
-#if defined (MAKRPANEL)
- #define DOGLCD
- #define SDSUPPORT
- #define ULTIPANEL
- #define NEWPANEL
- #define DEFAULT_LCD_CONTRAST 17
-#endif
-
-#if defined(miniVIKI) || defined(VIKI2)
- #define ULTRA_LCD  //general LCD support, also 16x2
- #define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
- #define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
-
-  #ifdef miniVIKI
-   #define DEFAULT_LCD_CONTRAST 95
-  #else
-   #define DEFAULT_LCD_CONTRAST 40
-  #endif
-
- #define ENCODER_PULSES_PER_STEP 4
- #define ENCODER_STEPS_PER_MENU_ITEM 1
-#endif
-
-#if defined (PANEL_ONE)
- #define SDSUPPORT
- #define ULTIMAKERCONTROLLER
-#endif
-
-#if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
- #define DOGLCD
- #define U8GLIB_ST7920
- #define REPRAP_DISCOUNT_SMART_CONTROLLER
-#endif
-
-#if defined(ULTIMAKERCONTROLLER) || defined(REPRAP_DISCOUNT_SMART_CONTROLLER) || defined(G3D_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
-#endif
-
-#if defined(REPRAPWORLD_KEYPAD)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
-#if defined(RA_CONTROL_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
- #define LCD_I2C_TYPE_PCA8574
- #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-#endif
-
-//I2C PANELS
+/**
+ * I2C PANELS
+ */
 
 //#define LCD_I2C_SAINSMART_YWROBOT
-#ifdef LCD_I2C_SAINSMART_YWROBOT
-  // This uses the LiquidCrystal_I2C library ( https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home )
-  // Make sure it is placed in the Arduino libraries directory.
-  #define LCD_I2C_TYPE_PCF8575
-  #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
 //#define LCD_I2C_PANELOLU2
-#ifdef LCD_I2C_PANELOLU2
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
-  // Note: The PANELOLU2 encoder click input can either be directly connected to a pin
-  //       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
-  #define NEWPANEL
-  #define ULTIPANEL
-
-  #ifndef ENCODER_PULSES_PER_STEP
-	#define ENCODER_PULSES_PER_STEP 4
-  #endif
-
-  #ifndef ENCODER_STEPS_PER_MENU_ITEM
-	#define ENCODER_STEPS_PER_MENU_ITEM 1
-  #endif
-
-
-  #ifdef LCD_USE_I2C_BUZZER
-	#define LCD_FEEDBACK_FREQUENCY_HZ 1000
-	#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100
-  #endif
-
-#endif
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
 //#define LCD_I2C_VIKI
-#ifdef LCD_I2C_VIKI
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // Note: The pause/stop/resume LCD button pin should be connected to the Arduino
-  //       BTN_ENC pin (or set BTN_ENC to -1 if not used)
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD (requires LiquidTWI2 v1.2.3 or later)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // Shift register panels
 // ---------------------
 // 2 wire Non-latching LCD SR from:
-// https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection
+// https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection 
 
 //#define SAV_3DLCD
-#ifdef SAV_3DLCD
-   #define SR_LCD_2W_NL    // Non latching 2 wire shiftregister
-   #define NEWPANEL
-   #define ULTIPANEL
-#endif
-
-
-#ifdef ULTIPANEL
-//  #define NEWPANEL  //enable this if you have a click-encoder panel
-  #define SDSUPPORT
-  #define ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the DOG graphic display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 20
-    #define LCD_HEIGHT 4
-  #endif
-#else //no panel but just LCD
-  #ifdef ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 16
-    #define LCD_HEIGHT 2
-  #endif
-  #endif
-#endif
-
-// default LCD contrast for dogm-like LCD displays
-#ifdef DOGLCD
-# ifndef DEFAULT_LCD_CONTRAST
-#  define DEFAULT_LCD_CONTRAST 32
-# endif
-#endif
 
 // Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
 //#define FAST_PWM_FAN
 
-// Temperature status LEDs that display the hotend and bet temperature.
-// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
-// Otherwise the RED led is on. There is 1C hysteresis.
-//#define TEMP_STAT_LEDS
-
 // Use software PWM to drive the fan, as for the heaters. This uses a very low frequency
 // which is not ass annoying as with the hardware PWM. On the other hand, if this frequency
 // is too low, you should also increment SOFT_PWM_SCALE.
 // at zero value, there are 128 effective control positions.
 #define SOFT_PWM_SCALE 0
 
+// Temperature status LEDs that display the hotend and bet temperature.
+// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
+// Otherwise the RED led is on. There is 1C hysteresis.
+//#define TEMP_STAT_LEDS
+
 // M240  Triggers a camera by emulating a Canon RC-1 Remote
 // Data from: http://www.doc-diy.net/photo/rc-1_hacked/
 // #define PHOTOGRAPH_PIN     23
  * Support for a filament diameter sensor
  * Also allows adjustment of diameter at print time (vs  at slicing)
  * Single extruder only at this point (extruder 0)
- *
+ * 
  * Motherboards
- * 34 - RAMPS1.4 - uses Analog input 5 on the AUX2 connector
+ * 34 - RAMPS1.4 - uses Analog input 5 on the AUX2 connector 
  * 81 - Printrboard - Uses Analog input 2 on the Exp1 connector (version B,C,D,E)
  * 301 - Rambo  - uses Analog input 3
  * Note may require analog pins to be defined for different motherboards
 #include "Configuration_adv.h"
 #include "thermistortables.h"
 
-#endif //__CONFIGURATION_H
+#endif //CONFIGURATION_H

Marlin/example_configurations/delta/generic/Configuration_adv.h

 #ifndef CONFIGURATION_ADV_H
 #define CONFIGURATION_ADV_H
 
+#include "Conditionals.h"
+
 //===========================================================================
 //=============================Thermal Settings  ============================
 //===========================================================================
 
 #define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing
 
-
-//// AUTOSET LOCATIONS OF LIMIT SWITCHES
-//// Added by ZetaPhoenix 09-15-2012
-#ifdef MANUAL_HOME_POSITIONS  // Use manual limit switch locations
-  #define X_HOME_POS MANUAL_X_HOME_POS
-  #define Y_HOME_POS MANUAL_Y_HOME_POS
-  #define Z_HOME_POS MANUAL_Z_HOME_POS
-#else //Set min/max homing switch positions based upon homing direction and min/max travel limits
-  //X axis
-  #if X_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * -0.5
-    #else
-      #define X_HOME_POS X_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else    
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * 0.5
-    #else
-      #define X_HOME_POS X_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //X_HOME_DIR == -1
-  
-  //Y axis
-  #if Y_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * -0.5
-    #else
-      #define Y_HOME_POS Y_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else    
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * 0.5
-    #else
-      #define Y_HOME_POS Y_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //Y_HOME_DIR == -1
-  
-  // Z axis
-  #if Z_HOME_DIR == -1 //BED_CENTER_AT_0_0 not used
-    #define Z_HOME_POS Z_MIN_POS
-  #else    
-    #define Z_HOME_POS Z_MAX_POS
-  #endif //Z_HOME_DIR == -1
-#endif //End auto min/max positions
-//END AUTOSET LOCATIONS OF LIMIT SWITCHES -ZP
-
-
 //#define Z_LATE_ENABLE // Enable Z the last moment. Needed if your Z driver overheats.
 
 // A single Z stepper driver is usually used to drive 2 stepper motors.
 // On a RAMPS (or other 5 driver) motherboard, using this feature will limit you to using 1 extruder.
 //#define Z_DUAL_STEPPER_DRIVERS
 
-#ifdef Z_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
 // Same again but for Y Axis.
 //#define Y_DUAL_STEPPER_DRIVERS
 
 // Define if the two Y drives need to rotate in opposite directions
 #define INVERT_Y2_VS_Y_DIR true
 
-#ifdef Y_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
-#if defined (Z_DUAL_STEPPER_DRIVERS) && defined (Y_DUAL_STEPPER_DRIVERS)
-  #error "You cannot have dual drivers for both Y and Z"
-#endif
-
 // Enable this for dual x-carriage printers. 
 // A dual x-carriage design has the advantage that the inactive extruder can be parked which
 // prevents hot-end ooze contaminating the print. It also reduces the weight of each x-carriage
 #define INVERT_Z_STEP_PIN false
 #define INVERT_E_STEP_PIN false
 
-//default stepper release if idle. Set to 0 to deactivate.
+// Default stepper release if idle. Set to 0 to deactivate.
 #define DEFAULT_STEPPER_DEACTIVE_TIME 60
 
 #define DEFAULT_MINIMUMFEEDRATE       0.0     // minimum feedrate
 
 // Feedrates for manual moves along X, Y, Z, E from panel
 #ifdef ULTIPANEL
-#define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60}  // set the speeds for manual moves (mm/min)
+  #define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60} // Feedrates for manual moves along X, Y, Z, E from panel
 #endif
 
 // minimum time in microseconds that a movement needs to take if the buffer is emptied.
 // if unwanted behavior is observed on a user's machine when running at very slow speeds.
 #define MINIMUM_PLANNER_SPEED 0.05// (mm/sec)
 
-// MS1 MS2 Stepper Driver Microstepping mode table
-#define MICROSTEP1 LOW,LOW
-#define MICROSTEP2 HIGH,LOW
-#define MICROSTEP4 LOW,HIGH
-#define MICROSTEP8 HIGH,HIGH
-#define MICROSTEP16 HIGH,HIGH
-
 // Microstep setting (Only functional when stepper driver microstep pins are connected to MCU.
 #define MICROSTEP_MODES {16,16,16,16,16} // [1,2,4,8,16]
 
   #define BABYSTEP_XY  //not only z, but also XY in the menu. more clutter, more functions
   #define BABYSTEP_INVERT_Z false  //true for inverse movements in Z
   #define BABYSTEP_Z_MULTIPLICATOR 2 //faster z movements
-  
-  #ifdef COREXY
-    #error BABYSTEPPING not implemented for COREXY yet.
-  #endif
-
-  #ifdef DELTA
-    #ifdef BABYSTEP_XY
-      #error BABYSTEPPING only implemented for Z axis on deltabots.
-    #endif
-  #endif
 #endif
 
 // extruder advance constant (s2/mm3)
 
 #ifdef ADVANCE
   #define EXTRUDER_ADVANCE_K .0
-
   #define D_FILAMENT 2.85
   #define STEPS_MM_E 836
-  #define EXTRUSION_AREA (0.25 * D_FILAMENT * D_FILAMENT * 3.14159)
-  #define STEPS_PER_CUBIC_MM_E (axis_steps_per_unit[E_AXIS]/ EXTRUSION_AREA)
-
 #endif // ADVANCE
 
 // Arc interpretation settings:
 // be commented out otherwise
 #define SDCARDDETECTINVERTED 
 
-#ifdef ULTIPANEL
- #undef SDCARDDETECTINVERTED
-#endif
-
-// Power Signal Control Definitions
-// By default use ATX definition
-#ifndef POWER_SUPPLY
-  #define POWER_SUPPLY 1
-#endif
-// 1 = ATX
-#if (POWER_SUPPLY == 1) 
-  #define PS_ON_AWAKE  LOW
-  #define PS_ON_ASLEEP HIGH
-#endif
-// 2 = X-Box 360 203W
-#if (POWER_SUPPLY == 2) 
-  #define PS_ON_AWAKE  HIGH
-  #define PS_ON_ASLEEP LOW
-#endif
-
 // Control heater 0 and heater 1 in parallel.
 //#define HEATERS_PARALLEL
 
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-//adds support for experimental filament exchange support M600; requires display
+// Add support for experimental filament exchange support M600; requires display
 #ifdef ULTIPANEL
-  #define FILAMENTCHANGEENABLE
+  //#define FILAMENTCHANGEENABLE
   #ifdef FILAMENTCHANGEENABLE
     #define FILAMENTCHANGE_XPOS 3
     #define FILAMENTCHANGE_YPOS 3
   #endif
 #endif
 
-#ifdef FILAMENTCHANGEENABLE
-  #ifdef EXTRUDER_RUNOUT_PREVENT
-    #error EXTRUDER_RUNOUT_PREVENT currently incompatible with FILAMENTCHANGE
-  #endif 
-#endif
- 
-//===========================================================================
-//=============================  Define Defines  ============================
-//===========================================================================
-
-#if defined (ENABLE_AUTO_BED_LEVELING) && defined (DELTA)
-
-  #if not defined(AUTO_BED_LEVELING_GRID)
-    #error "Only Grid Bed Auto Leveling is supported on Deltas."
-  #endif
-  
-  #if defined(Z_PROBE_SLED)
-    #error "You cannot use Z_PROBE_SLED together with DELTA."
-  #endif
-
-  #if defined(Z_PROBE_REPEATABILITY_TEST)
-    #error "Z-probe repeatability test is not supported on Deltas yet."
-  #endif
-
-#endif  
-
-#if defined(Z_PROBE_ALLEN_KEY)
-  #if !defined(AUTO_BED_LEVELING_GRID) || !defined(DELTA)
-    #error "Invalid use of Z_PROBE_ALLEN_KEY."
-  #endif
-#endif
-
-#if EXTRUDERS > 1 && defined TEMP_SENSOR_1_AS_REDUNDANT
-  #error "You cannot use TEMP_SENSOR_1_AS_REDUNDANT if EXTRUDERS > 1"
-#endif
-
-#if EXTRUDERS > 1 && defined HEATERS_PARALLEL
-  #error "You cannot use HEATERS_PARALLEL if EXTRUDERS > 1"
-#endif
-
-#if TEMP_SENSOR_0 > 0
-  #define THERMISTORHEATER_0 TEMP_SENSOR_0
-  #define HEATER_0_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_1 > 0
-  #define THERMISTORHEATER_1 TEMP_SENSOR_1
-  #define HEATER_1_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_2 > 0
-  #define THERMISTORHEATER_2 TEMP_SENSOR_2
-  #define HEATER_2_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_3 > 0
-  #define THERMISTORHEATER_3 TEMP_SENSOR_3
-  #define HEATER_3_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_BED > 0
-  #define THERMISTORBED TEMP_SENSOR_BED
-  #define BED_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_0 == -1
-  #define HEATER_0_USES_AD595
-#endif
-#if TEMP_SENSOR_1 == -1
-  #define HEATER_1_USES_AD595
-#endif
-#if TEMP_SENSOR_2 == -1
-  #define HEATER_2_USES_AD595
-#endif
-#if TEMP_SENSOR_3 == -1
-  #define HEATER_3_USES_AD595
-#endif
-#if TEMP_SENSOR_BED == -1
-  #define BED_USES_AD595
-#endif
-#if TEMP_SENSOR_0 == -2
-  #define HEATER_0_USES_MAX6675
-#endif
-#if TEMP_SENSOR_0 == 0
-  #undef HEATER_0_MINTEMP
-  #undef HEATER_0_MAXTEMP
-#endif
-#if TEMP_SENSOR_1 == 0
-  #undef HEATER_1_MINTEMP
-  #undef HEATER_1_MAXTEMP
-#endif
-#if TEMP_SENSOR_2 == 0
-  #undef HEATER_2_MINTEMP
-  #undef HEATER_2_MAXTEMP
-#endif
-#if TEMP_SENSOR_3 == 0
-  #undef HEATER_3_MINTEMP
-  #undef HEATER_3_MAXTEMP
-#endif
-#if TEMP_SENSOR_BED == 0
-  #undef BED_MINTEMP
-  #undef BED_MAXTEMP
-#endif
-
+#include "Conditionals.h"
+#include "SanityCheck.h"
 
-#endif //__CONFIGURATION_ADV_H
+#endif //CONFIGURATION_ADV_H

Marlin/example_configurations/delta/kossel_mini/Configuration.h

 // 10 is 100k RS thermistor 198-961 (4.7k pullup)
 // 11 is 100k beta 3950 1% thermistor (4.7k pullup)
 // 12 is 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup) (calibrated for Makibox hot bed)
-// 13 is 100k Hisens 3950  1% up to 300°C for hotend "Simple ONE " & "Hotend "All In ONE"
+// 13 is 100k Hisens 3950  1% up to 300°C for hotend "Simple ONE " & "Hotend "All In ONE" 
 // 20 is the PT100 circuit found in the Ultimainboard V2.x
 // 60 is 100k Maker's Tool Works Kapton Bed Thermistor beta=3950
 //
 // 1010 is Pt1000 with 1k pullup (non standard)
 // 147 is Pt100 with 4k7 pullup
 // 110 is Pt100 with 1k pullup (non standard)
-// 998 and 999 are Dummy Tables. They will ALWAYS read 25°C or the temperature defined below.
+// 998 and 999 are Dummy Tables. They will ALWAYS read 25°C or the temperature defined below. 
 //     Use it for Testing or Development purposes. NEVER for production machine.
 //     #define DUMMY_THERMISTOR_998_VALUE 25
 //     #define DUMMY_THERMISTOR_999_VALUE 100
 The system will turn the heater on forever, burning up the filament and anything
 else around.
 
-After the temperature reaches the target for the first time, this feature will
-start measuring for how long the current temperature stays below the target
+After the temperature reaches the target for the first time, this feature will 
+start measuring for how long the current temperature stays below the target 
 minus _HYSTERESIS (set_temperature - THERMAL_RUNAWAY_PROTECTION_HYSTERESIS).
 
 If it stays longer than _PERIOD, it means the thermistor temperature
 cannot catch up with the target, so something *may be* wrong. Then, to be on the
 safe side, the system will he halt.
 
-Bear in mind the count down will just start AFTER the first time the
+Bear in mind the count down will just start AFTER the first time the 
 thermistor temperature is over the target, so you will have no problem if
 your extruder heater takes 2 minutes to hit the target on heating.
 
   // #define ENDSTOPPULLUP_ZMIN
 #endif
 
-#ifdef ENDSTOPPULLUPS
-  #define ENDSTOPPULLUP_XMAX
-  #define ENDSTOPPULLUP_YMAX
-  #define ENDSTOPPULLUP_ZMAX
-  #define ENDSTOPPULLUP_XMIN
-  #define ENDSTOPPULLUP_YMIN
-  #define ENDSTOPPULLUP_ZMIN
-#endif
-
 // The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
 const bool X_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
 const bool Y_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
 #define Z_MAX_POS MANUAL_Z_HOME_POS
 #define Z_MIN_POS 0
 
-#define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS)
-#define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS)
-#define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)
+//===========================================================================
+//============================= Filament Runout Sensor ======================
+//===========================================================================
+//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
+                                 // In RAMPS uses servo pin 2. Can be changed in pins file. For other boards pin definition should be made.
+                                 // It is assumed that when logic high = filament available
+                                 //                    when logic  low = filament ran out
+//const bool FIL_RUNOUT_INVERTING = true;  // Should be uncommented and true or false should assigned
+//#define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
+
+//===========================================================================
+//============================ Manual Bed Leveling ==========================
+//===========================================================================
+
+// #define MANUAL_BED_LEVELING  // Add display menu option for bed leveling
+// #define MESH_BED_LEVELING    // Enable mesh bed leveling
 
+#if defined(MESH_BED_LEVELING)
+  #define MESH_MIN_X 10
+  #define MESH_MAX_X (X_MAX_POS - MESH_MIN_X)
+  #define MESH_MIN_Y 10
+  #define MESH_MAX_Y (Y_MAX_POS - MESH_MIN_Y)
+  #define MESH_NUM_X_POINTS 3  // Don't use more than 7 points per axis, implementation limited
+  #define MESH_NUM_Y_POINTS 3
+  #define MESH_HOME_SEARCH_Z 4  // Z after Home, bed somewhere below but above 0.0
+#endif  // MESH_BED_LEVELING
 
 //===========================================================================
 //============================= Bed Auto Leveling ===========================
   #define LEFT_PROBE_BED_POSITION -DELTA_PROBABLE_RADIUS
   #define RIGHT_PROBE_BED_POSITION DELTA_PROBABLE_RADIUS
   #define BACK_PROBE_BED_POSITION DELTA_PROBABLE_RADIUS
-  #define FRONT_PROBE_BED_POSITION -DELTA_PROBABLE_RADIUS
+  #define FRONT_PROBE_BED_POSITION -DELTA_PROBABLE_RADIUS  
 
-  #define MIN_PROBE_EDGE 10 // The probe square sides can be no smaller than this
+  #define MIN_PROBE_EDGE 10 // The probe square sides can be no smaller than this      
 
   // Non-linear bed leveling will be used.
   // Compensate by interpolating between the nearest four Z probe values for each point.
   #define Z_RAISE_BEFORE_PROBING 15   //How much the extruder will be raised before traveling to the first probing point.
   #define Z_RAISE_BETWEEN_PROBINGS 5  //How much the extruder will be raised when traveling from between next probing points
   #define Z_RAISE_AFTER_PROBING 50    //How much the extruder will be raised after the last probing point.
-
+  
   // Allen key retractable z-probe as seen on many Kossel delta printers - http://reprap.org/wiki/Kossel#Automatic_bed_leveling_probe
   // Deploys by touching z-axis belt. Retracts by pushing the probe down. Uses Z_MIN_PIN.
   #define Z_PROBE_ALLEN_KEY
     #define Z_PROBE_ALLEN_KEY_DEPLOY_X 30
     #define Z_PROBE_ALLEN_KEY_DEPLOY_Y DELTA_PRINTABLE_RADIUS
     #define Z_PROBE_ALLEN_KEY_DEPLOY_Z 100
-
+    
     #define Z_PROBE_ALLEN_KEY_RETRACT_X     -64
     #define Z_PROBE_ALLEN_KEY_RETRACT_Y     56
     #define Z_PROBE_ALLEN_KEY_RETRACT_Z     23
     #define Z_PROBE_ALLEN_KEY_RETRACT_DEPTH 20
   #endif
-
+  
   //If defined, the Probe servo will be turned on only during movement and then turned off to avoid jerk
   //The value is the delay to turn the servo off after powered on - depends on the servo speed; 300ms is good value, but you can try lower it.
   // You MUST HAVE the SERVO_ENDSTOPS defined to use here a value higher than zero otherwise your code will not compile.
 // in ultralcd.cpp@lcd_delta_calibrate_menu()
 // #define DELTA_CALIBRATION_MENU
 
-//automatic expansion
-#if defined (MAKRPANEL)
- #define DOGLCD
- #define SDSUPPORT
- #define ULTIPANEL
- #define NEWPANEL
- #define DEFAULT_LCD_CONTRAST 17
-#endif
-
-#if defined(miniVIKI) || defined(VIKI2)
- #define ULTRA_LCD  //general LCD support, also 16x2
- #define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
- #define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
-
-  #ifdef miniVIKI
-   #define DEFAULT_LCD_CONTRAST 95
-  #else
-   #define DEFAULT_LCD_CONTRAST 40
-  #endif
-
- #define ENCODER_PULSES_PER_STEP 4
- #define ENCODER_STEPS_PER_MENU_ITEM 1
-#endif
-
-#if defined (PANEL_ONE)
- #define SDSUPPORT
- #define ULTIMAKERCONTROLLER
-#endif
-
-#if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
- #define DOGLCD
- #define U8GLIB_ST7920
- #define REPRAP_DISCOUNT_SMART_CONTROLLER
-#endif
-
-#if defined(ULTIMAKERCONTROLLER) || defined(REPRAP_DISCOUNT_SMART_CONTROLLER) || defined(G3D_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
-#endif
-
-#if defined(REPRAPWORLD_KEYPAD)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
-#if defined(RA_CONTROL_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
- #define LCD_I2C_TYPE_PCA8574
- #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-#endif
-
-//I2C PANELS
+/**
+ * I2C Panels
+ */
 
 //#define LCD_I2C_SAINSMART_YWROBOT
-#ifdef LCD_I2C_SAINSMART_YWROBOT
-  // This uses the LiquidCrystal_I2C library ( https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home )
-  // Make sure it is placed in the Arduino libraries directory.
-  #define LCD_I2C_TYPE_PCF8575
-  #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
 //#define LCD_I2C_PANELOLU2
-#ifdef LCD_I2C_PANELOLU2
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
-  // Note: The PANELOLU2 encoder click input can either be directly connected to a pin
-  //       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
-  #define NEWPANEL
-  #define ULTIPANEL
-
-  #ifndef ENCODER_PULSES_PER_STEP
-	#define ENCODER_PULSES_PER_STEP 4
-  #endif
-
-  #ifndef ENCODER_STEPS_PER_MENU_ITEM
-	#define ENCODER_STEPS_PER_MENU_ITEM 1
-  #endif
-
-
-  #ifdef LCD_USE_I2C_BUZZER
-	#define LCD_FEEDBACK_FREQUENCY_HZ 1000
-	#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100
-  #endif
-
-#endif
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
 //#define LCD_I2C_VIKI
-#ifdef LCD_I2C_VIKI
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // Note: The pause/stop/resume LCD button pin should be connected to the Arduino
-  //       BTN_ENC pin (or set BTN_ENC to -1 if not used)
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD (requires LiquidTWI2 v1.2.3 or later)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // Shift register panels
 // ---------------------
 // 2 wire Non-latching LCD SR from:
-// https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection
+// https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection 
 
 //#define SAV_3DLCD
-#ifdef SAV_3DLCD
-   #define SR_LCD_2W_NL    // Non latching 2 wire shiftregister
-   #define NEWPANEL
-   #define ULTIPANEL
-#endif
-
-
-#ifdef ULTIPANEL
-//  #define NEWPANEL  //enable this if you have a click-encoder panel
-  #define SDSUPPORT
-  #define ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the DOG graphic display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 20
-    #define LCD_HEIGHT 4
-  #endif
-#else //no panel but just LCD
-  #ifdef ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 16
-    #define LCD_HEIGHT 2
-  #endif
-  #endif
-#endif
-
-// default LCD contrast for dogm-like LCD displays
-#ifdef DOGLCD
-# ifndef DEFAULT_LCD_CONTRAST
-#  define DEFAULT_LCD_CONTRAST 32
-# endif
-#endif
 
 // Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
 //#define FAST_PWM_FAN
 
-// Temperature status LEDs that display the hotend and bet temperature.
-// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
-// Otherwise the RED led is on. There is 1C hysteresis.
-//#define TEMP_STAT_LEDS
-
 // Use software PWM to drive the fan, as for the heaters. This uses a very low frequency
 // which is not ass annoying as with the hardware PWM. On the other hand, if this frequency
 // is too low, you should also increment SOFT_PWM_SCALE.
 // at zero value, there are 128 effective control positions.
 #define SOFT_PWM_SCALE 0
 
+// Temperature status LEDs that display the hotend and bet temperature.
+// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
+// Otherwise the RED led is on. There is 1C hysteresis.
+//#define TEMP_STAT_LEDS
+
 // M240  Triggers a camera by emulating a Canon RC-1 Remote
 // Data from: http://www.doc-diy.net/photo/rc-1_hacked/
 // #define PHOTOGRAPH_PIN     23
  * Support for a filament diameter sensor
  * Also allows adjustment of diameter at print time (vs  at slicing)
  * Single extruder only at this point (extruder 0)
- *
+ * 
  * Motherboards
- * 34 - RAMPS1.4 - uses Analog input 5 on the AUX2 connector
+ * 34 - RAMPS1.4 - uses Analog input 5 on the AUX2 connector 
  * 81 - Printrboard - Uses Analog input 2 on the Exp1 connector (version B,C,D,E)
  * 301 - Rambo  - uses Analog input 3
  * Note may require analog pins to be defined for different motherboards
 #include "Configuration_adv.h"
 #include "thermistortables.h"
 
-#endif //__CONFIGURATION_H
+#endif //CONFIGURATION_H

Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h

 #ifndef CONFIGURATION_ADV_H
 #define CONFIGURATION_ADV_H
 
+#include "Conditionals.h"
+
 //===========================================================================
 //=============================Thermal Settings  ============================
 //===========================================================================
 
 #define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing
 
-
-//// AUTOSET LOCATIONS OF LIMIT SWITCHES
-//// Added by ZetaPhoenix 09-15-2012
-#ifdef MANUAL_HOME_POSITIONS  // Use manual limit switch locations
-  #define X_HOME_POS MANUAL_X_HOME_POS
-  #define Y_HOME_POS MANUAL_Y_HOME_POS
-  #define Z_HOME_POS MANUAL_Z_HOME_POS
-#else //Set min/max homing switch positions based upon homing direction and min/max travel limits
-  //X axis
-  #if X_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * -0.5
-    #else
-      #define X_HOME_POS X_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else    
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * 0.5
-    #else
-      #define X_HOME_POS X_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //X_HOME_DIR == -1
-  
-  //Y axis
-  #if Y_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * -0.5
-    #else
-      #define Y_HOME_POS Y_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else    
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * 0.5
-    #else
-      #define Y_HOME_POS Y_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //Y_HOME_DIR == -1
-  
-  // Z axis
-  #if Z_HOME_DIR == -1 //BED_CENTER_AT_0_0 not used
-    #define Z_HOME_POS Z_MIN_POS
-  #else    
-    #define Z_HOME_POS Z_MAX_POS
-  #endif //Z_HOME_DIR == -1
-#endif //End auto min/max positions
-//END AUTOSET LOCATIONS OF LIMIT SWITCHES -ZP
-
-
 //#define Z_LATE_ENABLE // Enable Z the last moment. Needed if your Z driver overheats.
 
 // A single Z stepper driver is usually used to drive 2 stepper motors.
 // On a RAMPS (or other 5 driver) motherboard, using this feature will limit you to using 1 extruder.
 //#define Z_DUAL_STEPPER_DRIVERS
 
-#ifdef Z_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
 // Same again but for Y Axis.
 //#define Y_DUAL_STEPPER_DRIVERS
 
 // Define if the two Y drives need to rotate in opposite directions
 #define INVERT_Y2_VS_Y_DIR true
 
-#ifdef Y_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
-#if defined (Z_DUAL_STEPPER_DRIVERS) && defined (Y_DUAL_STEPPER_DRIVERS)
-  #error "You cannot have dual drivers for both Y and Z"
-#endif
-
 // Enable this for dual x-carriage printers. 
 // A dual x-carriage design has the advantage that the inactive extruder can be parked which
 // prevents hot-end ooze contaminating the print. It also reduces the weight of each x-carriage
 #define INVERT_Z_STEP_PIN false
 #define INVERT_E_STEP_PIN false
 
-//default stepper release if idle. Set to 0 to deactivate.
+// Default stepper release if idle. Set to 0 to deactivate.
 #define DEFAULT_STEPPER_DEACTIVE_TIME 60
 
 #define DEFAULT_MINIMUMFEEDRATE       0.0     // minimum feedrate
 
 // Feedrates for manual moves along X, Y, Z, E from panel
 #ifdef ULTIPANEL
-#define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60}  // set the speeds for manual moves (mm/min)
+  #define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60} // Feedrates for manual moves along X, Y, Z, E from panel
 #endif
 
 // minimum time in microseconds that a movement needs to take if the buffer is emptied.
 // if unwanted behavior is observed on a user's machine when running at very slow speeds.
 #define MINIMUM_PLANNER_SPEED 0.05// (mm/sec)
 
-// MS1 MS2 Stepper Driver Microstepping mode table
-#define MICROSTEP1 LOW,LOW
-#define MICROSTEP2 HIGH,LOW
-#define MICROSTEP4 LOW,HIGH
-#define MICROSTEP8 HIGH,HIGH
-#define MICROSTEP16 HIGH,HIGH
-
 // Microstep setting (Only functional when stepper driver microstep pins are connected to MCU.
 #define MICROSTEP_MODES {16,16,16,16,16} // [1,2,4,8,16]
 
   #define BABYSTEP_XY  //not only z, but also XY in the menu. more clutter, more functions
   #define BABYSTEP_INVERT_Z false  //true for inverse movements in Z
   #define BABYSTEP_Z_MULTIPLICATOR 2 //faster z movements
-  
-  #ifdef COREXY
-    #error BABYSTEPPING not implemented for COREXY yet.
-  #endif
-
-  #ifdef DELTA
-    #ifdef BABYSTEP_XY
-      #error BABYSTEPPING only implemented for Z axis on deltabots.
-    #endif
-  #endif
 #endif
 
 // extruder advance constant (s2/mm3)
 
 #ifdef ADVANCE
   #define EXTRUDER_ADVANCE_K .0
-
   #define D_FILAMENT 2.85
   #define STEPS_MM_E 836
-  #define EXTRUSION_AREA (0.25 * D_FILAMENT * D_FILAMENT * 3.14159)
-  #define STEPS_PER_CUBIC_MM_E (axis_steps_per_unit[E_AXIS]/ EXTRUSION_AREA)
-
 #endif // ADVANCE
 
 // Arc interpretation settings:
 // be commented out otherwise
 #define SDCARDDETECTINVERTED 
 
-#ifdef ULTIPANEL
- #undef SDCARDDETECTINVERTED
-#endif
-
-// Power Signal Control Definitions
-// By default use ATX definition
-#ifndef POWER_SUPPLY
-  #define POWER_SUPPLY 1
-#endif
-// 1 = ATX
-#if (POWER_SUPPLY == 1) 
-  #define PS_ON_AWAKE  LOW
-  #define PS_ON_ASLEEP HIGH
-#endif
-// 2 = X-Box 360 203W
-#if (POWER_SUPPLY == 2) 
-  #define PS_ON_AWAKE  HIGH
-  #define PS_ON_ASLEEP LOW
-#endif
-
 // Control heater 0 and heater 1 in parallel.
 //#define HEATERS_PARALLEL
 
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-//adds support for experimental filament exchange support M600; requires display
+// Add support for experimental filament exchange support M600; requires display
 #ifdef ULTIPANEL
-  #define FILAMENTCHANGEENABLE
+  //#define FILAMENTCHANGEENABLE
   #ifdef FILAMENTCHANGEENABLE
     #define FILAMENTCHANGE_XPOS 3
     #define FILAMENTCHANGE_YPOS 3
   #endif
 #endif
 
-#ifdef FILAMENTCHANGEENABLE
-  #ifdef EXTRUDER_RUNOUT_PREVENT
-    #error EXTRUDER_RUNOUT_PREVENT currently incompatible with FILAMENTCHANGE
-  #endif 
-#endif
- 
-//===========================================================================
-//=============================  Define Defines  ============================
-//===========================================================================
-
-#if defined (ENABLE_AUTO_BED_LEVELING) && defined (DELTA)
-
-  #if not defined(AUTO_BED_LEVELING_GRID)
-    #error "Only Grid Bed Auto Leveling is supported on Deltas."
-  #endif
-  
-  #if defined(Z_PROBE_SLED)
-    #error "You cannot use Z_PROBE_SLED together with DELTA."
-  #endif
-
-  #if defined(Z_PROBE_REPEATABILITY_TEST)
-    #error "Z-probe repeatability test is not supported on Deltas yet."
-  #endif
-
-#endif  
-
-#if defined(Z_PROBE_ALLEN_KEY)
-  #if !defined(AUTO_BED_LEVELING_GRID) || !defined(DELTA)
-    #error "Invalid use of Z_PROBE_ALLEN_KEY."
-  #endif
-#endif
-
-#if EXTRUDERS > 1 && defined TEMP_SENSOR_1_AS_REDUNDANT
-  #error "You cannot use TEMP_SENSOR_1_AS_REDUNDANT if EXTRUDERS > 1"
-#endif
-
-#if EXTRUDERS > 1 && defined HEATERS_PARALLEL
-  #error "You cannot use HEATERS_PARALLEL if EXTRUDERS > 1"
-#endif
-
-#if TEMP_SENSOR_0 > 0
-  #define THERMISTORHEATER_0 TEMP_SENSOR_0
-  #define HEATER_0_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_1 > 0
-  #define THERMISTORHEATER_1 TEMP_SENSOR_1
-  #define HEATER_1_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_2 > 0
-  #define THERMISTORHEATER_2 TEMP_SENSOR_2
-  #define HEATER_2_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_3 > 0
-  #define THERMISTORHEATER_3 TEMP_SENSOR_3
-  #define HEATER_3_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_BED > 0
-  #define THERMISTORBED TEMP_SENSOR_BED
-  #define BED_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_0 == -1
-  #define HEATER_0_USES_AD595
-#endif
-#if TEMP_SENSOR_1 == -1
-  #define HEATER_1_USES_AD595
-#endif
-#if TEMP_SENSOR_2 == -1
-  #define HEATER_2_USES_AD595
-#endif
-#if TEMP_SENSOR_3 == -1
-  #define HEATER_3_USES_AD595
-#endif
-#if TEMP_SENSOR_BED == -1
-  #define BED_USES_AD595
-#endif
-#if TEMP_SENSOR_0 == -2
-  #define HEATER_0_USES_MAX6675
-#endif
-#if TEMP_SENSOR_0 == 0
-  #undef HEATER_0_MINTEMP
-  #undef HEATER_0_MAXTEMP
-#endif
-#if TEMP_SENSOR_1 == 0
-  #undef HEATER_1_MINTEMP
-  #undef HEATER_1_MAXTEMP
-#endif
-#if TEMP_SENSOR_2 == 0
-  #undef HEATER_2_MINTEMP
-  #undef HEATER_2_MAXTEMP
-#endif
-#if TEMP_SENSOR_3 == 0
-  #undef HEATER_3_MINTEMP
-  #undef HEATER_3_MAXTEMP
-#endif
-#if TEMP_SENSOR_BED == 0
-  #undef BED_MINTEMP
-  #undef BED_MAXTEMP
-#endif
-
+#include "Conditionals.h"
+#include "SanityCheck.h"
 
-#endif //__CONFIGURATION_ADV_H
+#endif //CONFIGURATION_ADV_H

Marlin/example_configurations/makibox/Configuration.h

   // #define ENDSTOPPULLUP_ZMIN
 #endif
 
-#ifdef ENDSTOPPULLUPS
-  #define ENDSTOPPULLUP_XMAX
-  #define ENDSTOPPULLUP_YMAX
-  #define ENDSTOPPULLUP_ZMAX
-  #define ENDSTOPPULLUP_XMIN
-  #define ENDSTOPPULLUP_YMIN
-  #define ENDSTOPPULLUP_ZMIN
-#endif
-
 // The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
 const bool X_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
 const bool Y_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
 #define Z_MAX_POS 86
 #define Z_MIN_POS 0
 
-#define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS)
-#define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS)
-#define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)
+//===========================================================================
+//============================= Filament Runout Sensor ======================
+//===========================================================================
+//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
+                                 // In RAMPS uses servo pin 2. Can be changed in pins file. For other boards pin definition should be made.
+                                 // It is assumed that when logic high = filament available
+                                 //                    when logic  low = filament ran out
+//const bool FIL_RUNOUT_INVERTING = true;  // Should be uncommented and true or false should assigned
+//#define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
+
+//===========================================================================
+//============================ Manual Bed Leveling ==========================
+//===========================================================================
 
+// #define MANUAL_BED_LEVELING  // Add display menu option for bed leveling
+// #define MESH_BED_LEVELING    // Enable mesh bed leveling
+
+#if defined(MESH_BED_LEVELING)
+  #define MESH_MIN_X 10
+  #define MESH_MAX_X (X_MAX_POS - MESH_MIN_X)
+  #define MESH_MIN_Y 10
+  #define MESH_MAX_Y (Y_MAX_POS - MESH_MIN_Y)
+  #define MESH_NUM_X_POINTS 3  // Don't use more than 7 points per axis, implementation limited
+  #define MESH_NUM_Y_POINTS 3
+  #define MESH_HOME_SEARCH_Z 4  // Z after Home, bed somewhere below but above 0.0
+#endif  // MESH_BED_LEVELING
 
 //===========================================================================
 //============================= Bed Auto Leveling ===========================
 
   #ifdef AUTO_BED_LEVELING_GRID
 
-    // Use one of these defines to specify the origin
-    // for a topographical map to be printed for your bed.
-    enum { OriginBackLeft, OriginFrontLeft, OriginBackRight, OriginFrontRight };
-    #define TOPO_ORIGIN OriginFrontLeft
-
-    // The edges of the rectangle in which to probe
     #define LEFT_PROBE_BED_POSITION 15
     #define RIGHT_PROBE_BED_POSITION 170
     #define FRONT_PROBE_BED_POSITION 20
 // REMEMBER TO INSTALL LiquidCrystal_I2C.h in your ARDUINO library folder: https://github.com/kiyoshigawa/LiquidCrystal_I2C
 //#define RA_CONTROL_PANEL
 
-//automatic expansion
-#if defined (MAKRPANEL)
- #define DOGLCD
- #define SDSUPPORT
- #define ULTIPANEL
- #define NEWPANEL
- #define DEFAULT_LCD_CONTRAST 17
-#endif
-
-#if defined(miniVIKI) || defined(VIKI2)
- #define ULTRA_LCD  //general LCD support, also 16x2
- #define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
- #define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
- 
-  #ifdef miniVIKI
-   #define DEFAULT_LCD_CONTRAST 95
-  #else
-   #define DEFAULT_LCD_CONTRAST 40
-  #endif
-  
- #define ENCODER_PULSES_PER_STEP 4
- #define ENCODER_STEPS_PER_MENU_ITEM 1
-#endif
-
-#if defined (PANEL_ONE)
- #define SDSUPPORT
- #define ULTIMAKERCONTROLLER
-#endif
-
-#if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
- #define DOGLCD
- #define U8GLIB_ST7920
- #define REPRAP_DISCOUNT_SMART_CONTROLLER
-#endif
-
-#if defined(ULTIMAKERCONTROLLER) || defined(REPRAP_DISCOUNT_SMART_CONTROLLER) || defined(G3D_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
-#endif
-
-#if defined(REPRAPWORLD_KEYPAD)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
-#if defined(RA_CONTROL_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
- #define LCD_I2C_TYPE_PCA8574
- #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-#endif
-
-//I2C PANELS
+/**
+ * I2C Panels
+ */
 
 //#define LCD_I2C_SAINSMART_YWROBOT
-#ifdef LCD_I2C_SAINSMART_YWROBOT
-  // This uses the LiquidCrystal_I2C library ( https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home )
-  // Make sure it is placed in the Arduino libraries directory.
-  #define LCD_I2C_TYPE_PCF8575
-  #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
 //#define LCD_I2C_PANELOLU2
-#ifdef LCD_I2C_PANELOLU2
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
-  // Note: The PANELOLU2 encoder click input can either be directly connected to a pin
-  //       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
-  #define NEWPANEL
-  #define ULTIPANEL
-
-  #ifndef ENCODER_PULSES_PER_STEP
-	#define ENCODER_PULSES_PER_STEP 4
-  #endif
-
-  #ifndef ENCODER_STEPS_PER_MENU_ITEM
-	#define ENCODER_STEPS_PER_MENU_ITEM 1
-  #endif
-
-
-  #ifdef LCD_USE_I2C_BUZZER
-	#define LCD_FEEDBACK_FREQUENCY_HZ 1000
-	#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100
-  #endif
-
-#endif
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
 //#define LCD_I2C_VIKI
-#ifdef LCD_I2C_VIKI
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // Note: The pause/stop/resume LCD button pin should be connected to the Arduino
-  //       BTN_ENC pin (or set BTN_ENC to -1 if not used)
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD (requires LiquidTWI2 v1.2.3 or later)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // Shift register panels
 // ---------------------
 // https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection 
 
 //#define SAV_3DLCD
-#ifdef SAV_3DLCD
-   #define SR_LCD_2W_NL    // Non latching 2 wire shiftregister
-   #define NEWPANEL
-   #define ULTIPANEL
-#endif
-
-
-#ifdef ULTIPANEL
-//  #define NEWPANEL  //enable this if you have a click-encoder panel
-  #define SDSUPPORT
-  #define ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the DOG graphic display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 20
-    #define LCD_HEIGHT 4
-  #endif
-#else //no panel but just LCD
-  #ifdef ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 16
-    #define LCD_HEIGHT 2
-  #endif
-  #endif
-#endif
-
-// default LCD contrast for dogm-like LCD displays
-#ifdef DOGLCD
-# ifndef DEFAULT_LCD_CONTRAST
-#  define DEFAULT_LCD_CONTRAST 32
-# endif
-#endif
 
 // Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
 //#define FAST_PWM_FAN
 
-// Temperature status LEDs that display the hotend and bet temperature.
-// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
-// Otherwise the RED led is on. There is 1C hysteresis.
-//#define TEMP_STAT_LEDS
-
 // Use software PWM to drive the fan, as for the heaters. This uses a very low frequency
 // which is not ass annoying as with the hardware PWM. On the other hand, if this frequency
 // is too low, you should also increment SOFT_PWM_SCALE.
 // at zero value, there are 128 effective control positions.
 #define SOFT_PWM_SCALE 0
 
+// Temperature status LEDs that display the hotend and bet temperature.
+// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
+// Otherwise the RED led is on. There is 1C hysteresis.
+//#define TEMP_STAT_LEDS
+
 // M240  Triggers a camera by emulating a Canon RC-1 Remote
 // Data from: http://www.doc-diy.net/photo/rc-1_hacked/
 // #define PHOTOGRAPH_PIN     23
 #include "Configuration_adv.h"
 #include "thermistortables.h"
 
-#endif //__CONFIGURATION_H
+#endif //CONFIGURATION_H

Marlin/example_configurations/makibox/Configuration_adv.h

 #ifndef CONFIGURATION_ADV_H
 #define CONFIGURATION_ADV_H
 
+#include "Conditionals.h"
+
 //===========================================================================
 //=============================Thermal Settings  ============================
 //===========================================================================
 
 #define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing
 
-
-//// AUTOSET LOCATIONS OF LIMIT SWITCHES
-//// Added by ZetaPhoenix 09-15-2012
-#ifdef MANUAL_HOME_POSITIONS  // Use manual limit switch locations
-  #define X_HOME_POS MANUAL_X_HOME_POS
-  #define Y_HOME_POS MANUAL_Y_HOME_POS
-  #define Z_HOME_POS MANUAL_Z_HOME_POS
-#else //Set min/max homing switch positions based upon homing direction and min/max travel limits
-  //X axis
-  #if X_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * -0.5
-    #else
-      #define X_HOME_POS X_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * 0.5
-    #else
-      #define X_HOME_POS X_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //X_HOME_DIR == -1
-
-  //Y axis
-  #if Y_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * -0.5
-    #else
-      #define Y_HOME_POS Y_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * 0.5
-    #else
-      #define Y_HOME_POS Y_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //Y_HOME_DIR == -1
-
-  // Z axis
-  #if Z_HOME_DIR == -1 //BED_CENTER_AT_0_0 not used
-    #define Z_HOME_POS Z_MIN_POS
-  #else
-    #define Z_HOME_POS Z_MAX_POS
-  #endif //Z_HOME_DIR == -1
-#endif //End auto min/max positions
-//END AUTOSET LOCATIONS OF LIMIT SWITCHES -ZP
-
-
 //#define Z_LATE_ENABLE // Enable Z the last moment. Needed if your Z driver overheats.
 
 // A single Z stepper driver is usually used to drive 2 stepper motors.
 // On a RAMPS (or other 5 driver) motherboard, using this feature will limit you to using 1 extruder.
 //#define Z_DUAL_STEPPER_DRIVERS
 
-#ifdef Z_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
 // Same again but for Y Axis.
 //#define Y_DUAL_STEPPER_DRIVERS
 
 // Define if the two Y drives need to rotate in opposite directions
 #define INVERT_Y2_VS_Y_DIR true
 
-#ifdef Y_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
-#if defined (Z_DUAL_STEPPER_DRIVERS) && defined (Y_DUAL_STEPPER_DRIVERS)
-  #error "You cannot have dual drivers for both Y and Z"
-#endif
-
 // Enable this for dual x-carriage printers.
 // A dual x-carriage design has the advantage that the inactive extruder can be parked which
 // prevents hot-end ooze contaminating the print. It also reduces the weight of each x-carriage
 #define INVERT_Z_STEP_PIN false
 #define INVERT_E_STEP_PIN false
 
-//default stepper release if idle. Set to 0 to deactivate.
+// Default stepper release if idle. Set to 0 to deactivate.
 #define DEFAULT_STEPPER_DEACTIVE_TIME 60
 
 #define DEFAULT_MINIMUMFEEDRATE       0.0     // minimum feedrate
 #define DEFAULT_MINTRAVELFEEDRATE     0.0
 
-// Feedrates for manual moves along X, Y, Z, E from panel
 #ifdef ULTIPANEL
-#define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60}  // set the speeds for manual moves (mm/min)
-#endif
-
-//Comment to disable setting feedrate multiplier via encoder
-#ifdef ULTIPANEL
-    #define ULTIPANEL_FEEDMULTIPLY
+  #define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60} // Feedrates for manual moves along X, Y, Z, E from panel
+  #define ULTIPANEL_FEEDMULTIPLY  // Comment to disable setting feedrate multiplier via encoder
 #endif
 
 // minimum time in microseconds that a movement needs to take if the buffer is emptied.
 // if unwanted behavior is observed on a user's machine when running at very slow speeds.
 #define MINIMUM_PLANNER_SPEED 0.05// (mm/sec)
 
-// MS1 MS2 Stepper Driver Microstepping mode table
-#define MICROSTEP1 LOW,LOW
-#define MICROSTEP2 HIGH,LOW
-#define MICROSTEP4 LOW,HIGH
-#define MICROSTEP8 HIGH,HIGH
-#define MICROSTEP16 HIGH,HIGH
-
 // Microstep setting (Only functional when stepper driver microstep pins are connected to MCU.
 #define MICROSTEP_MODES {16,16,16,16,16} // [1,2,4,8,16]
 
   #define BABYSTEP_XY  //not only z, but also XY in the menu. more clutter, more functions
   #define BABYSTEP_INVERT_Z false  //true for inverse movements in Z
   #define BABYSTEP_Z_MULTIPLICATOR 2 //faster z movements
-
-  #ifdef COREXY
-    #error BABYSTEPPING not implemented for COREXY yet.
-  #endif
-
-  #ifdef DELTA
-    #ifdef BABYSTEP_XY
-      #error BABYSTEPPING only implemented for Z axis on deltabots.
-    #endif
-  #endif
 #endif
 
 // extruder advance constant (s2/mm3)
 
 #ifdef ADVANCE
   #define EXTRUDER_ADVANCE_K .0
-
   #define D_FILAMENT 2.85
   #define STEPS_MM_E 836
-  #define EXTRUSION_AREA (0.25 * D_FILAMENT * D_FILAMENT * 3.14159)
-  #define STEPS_PER_CUBIC_MM_E (axis_steps_per_unit[E_AXIS]/ EXTRUSION_AREA)
-
 #endif // ADVANCE
 
 // Arc interpretation settings:
 // be commented out otherwise
 //#define SDCARDDETECTINVERTED
 
-#ifdef ULTIPANEL
- #undef SDCARDDETECTINVERTED
-#endif
-
-// Power Signal Control Definitions
-// By default use ATX definition
-#ifndef POWER_SUPPLY
-  #define POWER_SUPPLY 1
-#endif
-// 1 = ATX
-#if (POWER_SUPPLY == 1)
-  #define PS_ON_AWAKE  LOW
-  #define PS_ON_ASLEEP HIGH
-#endif
-// 2 = X-Box 360 203W
-#if (POWER_SUPPLY == 2)
-  #define PS_ON_AWAKE  HIGH
-  #define PS_ON_ASLEEP LOW
-#endif
-
 // Control heater 0 and heater 1 in parallel.
 //#define HEATERS_PARALLEL
 
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-//adds support for experimental filament exchange support M600; requires display
+// Add support for experimental filament exchange support M600; requires display
 #ifdef ULTIPANEL
-  #define FILAMENTCHANGEENABLE
+  //#define FILAMENTCHANGEENABLE
   #ifdef FILAMENTCHANGEENABLE
     #define FILAMENTCHANGE_XPOS 3
     #define FILAMENTCHANGE_YPOS 3
   #endif
 #endif
 
-#ifdef FILAMENTCHANGEENABLE
-  #ifdef EXTRUDER_RUNOUT_PREVENT
-    #error EXTRUDER_RUNOUT_PREVENT currently incompatible with FILAMENTCHANGE
-  #endif
-#endif
-
-//===========================================================================
-//=============================  Define Defines  ============================
-//===========================================================================
-#if EXTRUDERS > 1 && defined TEMP_SENSOR_1_AS_REDUNDANT
-  #error "You cannot use TEMP_SENSOR_1_AS_REDUNDANT if EXTRUDERS > 1"
-#endif
-
-#if EXTRUDERS > 1 && defined HEATERS_PARALLEL
-  #error "You cannot use HEATERS_PARALLEL if EXTRUDERS > 1"
-#endif
-
-#if TEMP_SENSOR_0 > 0
-  #define THERMISTORHEATER_0 TEMP_SENSOR_0
-  #define HEATER_0_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_1 > 0
-  #define THERMISTORHEATER_1 TEMP_SENSOR_1
-  #define HEATER_1_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_2 > 0
-  #define THERMISTORHEATER_2 TEMP_SENSOR_2
-  #define HEATER_2_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_3 > 0
-  #define THERMISTORHEATER_3 TEMP_SENSOR_3
-  #define HEATER_3_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_BED > 0
-  #define THERMISTORBED TEMP_SENSOR_BED
-  #define BED_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_0 == -1
-  #define HEATER_0_USES_AD595
-#endif
-#if TEMP_SENSOR_1 == -1
-  #define HEATER_1_USES_AD595
-#endif
-#if TEMP_SENSOR_2 == -1
-  #define HEATER_2_USES_AD595
-#endif
-#if TEMP_SENSOR_3 == -1
-  #define HEATER_3_USES_AD595
-#endif
-#if TEMP_SENSOR_BED == -1
-  #define BED_USES_AD595
-#endif
-#if TEMP_SENSOR_0 == -2
-  #define HEATER_0_USES_MAX6675
-#endif
-#if TEMP_SENSOR_0 == 0
-  #undef HEATER_0_MINTEMP
-  #undef HEATER_0_MAXTEMP
-#endif
-#if TEMP_SENSOR_1 == 0
-  #undef HEATER_1_MINTEMP
-  #undef HEATER_1_MAXTEMP
-#endif
-#if TEMP_SENSOR_2 == 0
-  #undef HEATER_2_MINTEMP
-  #undef HEATER_2_MAXTEMP
-#endif
-#if TEMP_SENSOR_3 == 0
-  #undef HEATER_3_MINTEMP
-  #undef HEATER_3_MAXTEMP
-#endif
-#if TEMP_SENSOR_BED == 0
-  #undef BED_MINTEMP
-  #undef BED_MAXTEMP
-#endif
-
+#include "Conditionals.h"
+#include "SanityCheck.h"
 
-#endif //__CONFIGURATION_ADV_H
+#endif //CONFIGURATION_ADV_H

Marlin/example_configurations/tvrrug/Round2/Configuration.h

   // #define ENDSTOPPULLUP_ZMIN
 #endif
 
-#ifdef ENDSTOPPULLUPS
-  #define ENDSTOPPULLUP_XMAX
-  #define ENDSTOPPULLUP_YMAX
-  #define ENDSTOPPULLUP_ZMAX
-  #define ENDSTOPPULLUP_XMIN
-  #define ENDSTOPPULLUP_YMIN
-  #define ENDSTOPPULLUP_ZMIN
-#endif
-
 // The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
 const bool X_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
 const bool Y_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
 #define Z_MAX_POS 120
 #define Z_MIN_POS 0
 
-#define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS)
-#define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS)
-#define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)
+//===========================================================================
+//============================= Filament Runout Sensor ======================
+//===========================================================================
+//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
+                                 // In RAMPS uses servo pin 2. Can be changed in pins file. For other boards pin definition should be made.
+                                 // It is assumed that when logic high = filament available
+                                 //                    when logic  low = filament ran out
+//const bool FIL_RUNOUT_INVERTING = true;  // Should be uncommented and true or false should assigned
+//#define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
+
+//===========================================================================
+//============================ Manual Bed Leveling ==========================
+//===========================================================================
 
+// #define MANUAL_BED_LEVELING  // Add display menu option for bed leveling
+// #define MESH_BED_LEVELING    // Enable mesh bed leveling
+
+#if defined(MESH_BED_LEVELING)
+  #define MESH_MIN_X 10
+  #define MESH_MAX_X (X_MAX_POS - MESH_MIN_X)
+  #define MESH_MIN_Y 10
+  #define MESH_MAX_Y (Y_MAX_POS - MESH_MIN_Y)
+  #define MESH_NUM_X_POINTS 3  // Don't use more than 7 points per axis, implementation limited
+  #define MESH_NUM_Y_POINTS 3
+  #define MESH_HOME_SEARCH_Z 4  // Z after Home, bed somewhere below but above 0.0
+#endif  // MESH_BED_LEVELING
 
 //===========================================================================
 //============================= Bed Auto Leveling ===========================
 
   #ifdef AUTO_BED_LEVELING_GRID
 
-    // Use one of these defines to specify the origin
-    // for a topographical map to be printed for your bed.
-    enum { OriginBackLeft, OriginFrontLeft, OriginBackRight, OriginFrontRight };
-    #define TOPO_ORIGIN OriginFrontLeft
-
-    // The edges of the rectangle in which to probe
     #define LEFT_PROBE_BED_POSITION 15
     #define RIGHT_PROBE_BED_POSITION 170
     #define FRONT_PROBE_BED_POSITION 20
 // REMEMBER TO INSTALL LiquidCrystal_I2C.h in your ARDUINO library folder: https://github.com/kiyoshigawa/LiquidCrystal_I2C
 //#define RA_CONTROL_PANEL
 
-//automatic expansion
-#if defined (MAKRPANEL)
- #define DOGLCD
- #define SDSUPPORT
- #define ULTIPANEL
- #define NEWPANEL
- #define DEFAULT_LCD_CONTRAST 17
-#endif
-
-#if defined(miniVIKI) || defined(VIKI2)
- #define ULTRA_LCD  //general LCD support, also 16x2
- #define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
- #define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
- 
-  #ifdef miniVIKI
-   #define DEFAULT_LCD_CONTRAST 95
-  #else
-   #define DEFAULT_LCD_CONTRAST 40
-  #endif
-  
- #define ENCODER_PULSES_PER_STEP 4
- #define ENCODER_STEPS_PER_MENU_ITEM 1
-#endif
-
-#if defined (PANEL_ONE)
- #define SDSUPPORT
- #define ULTIMAKERCONTROLLER
-#endif
-
-#if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
- #define DOGLCD
- #define U8GLIB_ST7920
- #define REPRAP_DISCOUNT_SMART_CONTROLLER
-#endif
-
-#if defined(ULTIMAKERCONTROLLER) || defined(REPRAP_DISCOUNT_SMART_CONTROLLER) || defined(G3D_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
-#endif
-
-#if defined(REPRAPWORLD_KEYPAD)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
-#if defined(RA_CONTROL_PANEL)
- #define ULTIPANEL
- #define NEWPANEL
- #define LCD_I2C_TYPE_PCA8574
- #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-#endif
-
-//I2C PANELS
+/**
+ * I2C Panels
+ */
 
 //#define LCD_I2C_SAINSMART_YWROBOT
-#ifdef LCD_I2C_SAINSMART_YWROBOT
-  // This uses the LiquidCrystal_I2C library ( https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home )
-  // Make sure it is placed in the Arduino libraries directory.
-  #define LCD_I2C_TYPE_PCF8575
-  #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
 //#define LCD_I2C_PANELOLU2
-#ifdef LCD_I2C_PANELOLU2
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // (v1.2.3 no longer requires you to define PANELOLU in the LiquidTWI2.h library header file)
-  // Note: The PANELOLU2 encoder click input can either be directly connected to a pin
-  //       (if BTN_ENC defined to != -1) or read through I2C (when BTN_ENC == -1).
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD
-  #define NEWPANEL
-  #define ULTIPANEL
-
-  #ifndef ENCODER_PULSES_PER_STEP
-	#define ENCODER_PULSES_PER_STEP 4
-  #endif
-
-  #ifndef ENCODER_STEPS_PER_MENU_ITEM
-	#define ENCODER_STEPS_PER_MENU_ITEM 1
-  #endif
-
-
-  #ifdef LCD_USE_I2C_BUZZER
-	#define LCD_FEEDBACK_FREQUENCY_HZ 1000
-	#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100
-  #endif
-
-#endif
 
 // Panucatt VIKI LCD with status LEDs, integrated click & L/R/U/P buttons, separate encoder inputs
 //#define LCD_I2C_VIKI
-#ifdef LCD_I2C_VIKI
-  // This uses the LiquidTWI2 library v1.2.3 or later ( https://github.com/lincomatic/LiquidTWI2 )
-  // Make sure the LiquidTWI2 directory is placed in the Arduino or Sketchbook libraries subdirectory.
-  // Note: The pause/stop/resume LCD button pin should be connected to the Arduino
-  //       BTN_ENC pin (or set BTN_ENC to -1 if not used)
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER //comment out to disable buzzer on LCD (requires LiquidTWI2 v1.2.3 or later)
-  #define NEWPANEL
-  #define ULTIPANEL
-#endif
 
 // Shift register panels
 // ---------------------
 // https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection 
 
 //#define SAV_3DLCD
-#ifdef SAV_3DLCD
-   #define SR_LCD_2W_NL    // Non latching 2 wire shiftregister
-   #define NEWPANEL
-   #define ULTIPANEL
-#endif
-
-
-#ifdef ULTIPANEL
-//  #define NEWPANEL  //enable this if you have a click-encoder panel
-  #define SDSUPPORT
-  #define ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the DOG graphic display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 20
-    #define LCD_HEIGHT 4
-  #endif
-#else //no panel but just LCD
-  #ifdef ULTRA_LCD
-  #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
-    #define LCD_WIDTH 22
-    #define LCD_HEIGHT 5
-  #else
-    #define LCD_WIDTH 16
-    #define LCD_HEIGHT 2
-  #endif
-  #endif
-#endif
-
-// default LCD contrast for dogm-like LCD displays
-#ifdef DOGLCD
-# ifndef DEFAULT_LCD_CONTRAST
-#  define DEFAULT_LCD_CONTRAST 32
-# endif
-#endif
 
 // Increase the FAN pwm frequency. Removes the PWM noise but increases heating in the FET/Arduino
 //#define FAST_PWM_FAN
 
-// Temperature status LEDs that display the hotend and bet temperature.
-// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
-// Otherwise the RED led is on. There is 1C hysteresis.
-//#define TEMP_STAT_LEDS
-
 // Use software PWM to drive the fan, as for the heaters. This uses a very low frequency
 // which is not ass annoying as with the hardware PWM. On the other hand, if this frequency
 // is too low, you should also increment SOFT_PWM_SCALE.
 // at zero value, there are 128 effective control positions.
 #define SOFT_PWM_SCALE 0
 
+// Temperature status LEDs that display the hotend and bet temperature.
+// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
+// Otherwise the RED led is on. There is 1C hysteresis.
+//#define TEMP_STAT_LEDS
+
 // M240  Triggers a camera by emulating a Canon RC-1 Remote
 // Data from: http://www.doc-diy.net/photo/rc-1_hacked/
 // #define PHOTOGRAPH_PIN     23
 #include "Configuration_adv.h"
 #include "thermistortables.h"
 
-#endif //__CONFIGURATION_H
+#endif //CONFIGURATION_H

Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h

 #ifndef CONFIGURATION_ADV_H
 #define CONFIGURATION_ADV_H
 
+#include "Conditionals.h"
+
 //===========================================================================
 //=============================Thermal Settings  ============================
 //===========================================================================
 
 #define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing
 
-
-//// AUTOSET LOCATIONS OF LIMIT SWITCHES
-//// Added by ZetaPhoenix 09-15-2012
-#ifdef MANUAL_HOME_POSITIONS  // Use manual limit switch locations
-  #define X_HOME_POS MANUAL_X_HOME_POS
-  #define Y_HOME_POS MANUAL_Y_HOME_POS
-  #define Z_HOME_POS MANUAL_Z_HOME_POS
-#else //Set min/max homing switch positions based upon homing direction and min/max travel limits
-  //X axis
-  #if X_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * -0.5
-    #else
-      #define X_HOME_POS X_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define X_HOME_POS X_MAX_LENGTH * 0.5
-    #else
-      #define X_HOME_POS X_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //X_HOME_DIR == -1
-
-  //Y axis
-  #if Y_HOME_DIR == -1
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * -0.5
-    #else
-      #define Y_HOME_POS Y_MIN_POS
-    #endif //BED_CENTER_AT_0_0
-  #else
-    #ifdef BED_CENTER_AT_0_0
-      #define Y_HOME_POS Y_MAX_LENGTH * 0.5
-    #else
-      #define Y_HOME_POS Y_MAX_POS
-    #endif //BED_CENTER_AT_0_0
-  #endif //Y_HOME_DIR == -1
-
-  // Z axis
-  #if Z_HOME_DIR == -1 //BED_CENTER_AT_0_0 not used
-    #define Z_HOME_POS Z_MIN_POS
-  #else
-    #define Z_HOME_POS Z_MAX_POS
-  #endif //Z_HOME_DIR == -1
-#endif //End auto min/max positions
-//END AUTOSET LOCATIONS OF LIMIT SWITCHES -ZP
-
-
 //#define Z_LATE_ENABLE // Enable Z the last moment. Needed if your Z driver overheats.
 
 // A single Z stepper driver is usually used to drive 2 stepper motors.
 // On a RAMPS (or other 5 driver) motherboard, using this feature will limit you to using 1 extruder.
 //#define Z_DUAL_STEPPER_DRIVERS
 
-#ifdef Z_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
 // Same again but for Y Axis.
 //#define Y_DUAL_STEPPER_DRIVERS
 
 // Define if the two Y drives need to rotate in opposite directions
 #define INVERT_Y2_VS_Y_DIR true
 
-#ifdef Y_DUAL_STEPPER_DRIVERS
-  #undef EXTRUDERS
-  #define EXTRUDERS 1
-#endif
-
-#if defined (Z_DUAL_STEPPER_DRIVERS) && defined (Y_DUAL_STEPPER_DRIVERS)
-  #error "You cannot have dual drivers for both Y and Z"
-#endif
-
 // Enable this for dual x-carriage printers.
 // A dual x-carriage design has the advantage that the inactive extruder can be parked which
 // prevents hot-end ooze contaminating the print. It also reduces the weight of each x-carriage
 #define INVERT_Z_STEP_PIN false
 #define INVERT_E_STEP_PIN false
 
-//default stepper release if idle. Set to 0 to deactivate.
+// Default stepper release if idle. Set to 0 to deactivate.
 #define DEFAULT_STEPPER_DEACTIVE_TIME 60
 
 #define DEFAULT_MINIMUMFEEDRATE       0.0     // minimum feedrate
 #define DEFAULT_MINTRAVELFEEDRATE     0.0
 
-// Feedrates for manual moves along X, Y, Z, E from panel
-#ifdef ULTIPANEL
-#define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60}  // set the speeds for manual moves (mm/min)
-#endif
-
-//Comment to disable setting feedrate multiplier via encoder
 #ifdef ULTIPANEL
-    #define ULTIPANEL_FEEDMULTIPLY
+  #define MANUAL_FEEDRATE {50*60, 50*60, 4*60, 60} // Feedrates for manual moves along X, Y, Z, E from panel
+  #define ULTIPANEL_FEEDMULTIPLY  // Comment to disable setting feedrate multiplier via encoder
 #endif
 
 // minimum time in microseconds that a movement needs to take if the buffer is emptied.
 // if unwanted behavior is observed on a user's machine when running at very slow speeds.
 #define MINIMUM_PLANNER_SPEED 0.05// (mm/sec)
 
-// MS1 MS2 Stepper Driver Microstepping mode table
-#define MICROSTEP1 LOW,LOW
-#define MICROSTEP2 HIGH,LOW
-#define MICROSTEP4 LOW,HIGH
-#define MICROSTEP8 HIGH,HIGH
-#define MICROSTEP16 HIGH,HIGH
-
 // Microstep setting (Only functional when stepper driver microstep pins are connected to MCU.
 #define MICROSTEP_MODES {16,16,16,16,16} // [1,2,4,8,16]
 
   #define BABYSTEP_XY  //not only z, but also XY in the menu. more clutter, more functions
   #define BABYSTEP_INVERT_Z false  //true for inverse movements in Z
   #define BABYSTEP_Z_MULTIPLICATOR 2 //faster z movements
-
-  #ifdef COREXY
-    #error BABYSTEPPING not implemented for COREXY yet.
-  #endif
-
-  #ifdef DELTA
-    #ifdef BABYSTEP_XY
-      #error BABYSTEPPING only implemented for Z axis on deltabots.
-    #endif
-  #endif
 #endif
 
 // extruder advance constant (s2/mm3)
 // be commented out otherwise
 #define SDCARDDETECTINVERTED
 
-#ifdef ULTIPANEL
- #undef SDCARDDETECTINVERTED
-#endif
-
-// Power Signal Control Definitions
-// By default use ATX definition
-#ifndef POWER_SUPPLY
-  #define POWER_SUPPLY 1
-#endif
-// 1 = ATX
-#if (POWER_SUPPLY == 1)
-  #define PS_ON_AWAKE  LOW
-  #define PS_ON_ASLEEP HIGH
-#endif
-// 2 = X-Box 360 203W
-#if (POWER_SUPPLY == 2)
-  #define PS_ON_AWAKE  HIGH
-  #define PS_ON_ASLEEP LOW
-#endif
-
 // Control heater 0 and heater 1 in parallel.
 //#define HEATERS_PARALLEL
 
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-//adds support for experimental filament exchange support M600; requires display
+// Add support for experimental filament exchange support M600; requires display
 #ifdef ULTIPANEL
-  #define FILAMENTCHANGEENABLE
+  //#define FILAMENTCHANGEENABLE
   #ifdef FILAMENTCHANGEENABLE
     #define FILAMENTCHANGE_XPOS 3
     #define FILAMENTCHANGE_YPOS 3
   #endif
 #endif
 
-#ifdef FILAMENTCHANGEENABLE
-  #ifdef EXTRUDER_RUNOUT_PREVENT
-    #error EXTRUDER_RUNOUT_PREVENT currently incompatible with FILAMENTCHANGE
-  #endif
-#endif
-
-//===========================================================================
-//=============================  Define Defines  ============================
-//===========================================================================
-#if EXTRUDERS > 1 && defined TEMP_SENSOR_1_AS_REDUNDANT
-  #error "You cannot use TEMP_SENSOR_1_AS_REDUNDANT if EXTRUDERS > 1"
-#endif
-
-#if EXTRUDERS > 1 && defined HEATERS_PARALLEL
-  #error "You cannot use HEATERS_PARALLEL if EXTRUDERS > 1"
-#endif
-
-#if TEMP_SENSOR_0 > 0
-  #define THERMISTORHEATER_0 TEMP_SENSOR_0
-  #define HEATER_0_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_1 > 0
-  #define THERMISTORHEATER_1 TEMP_SENSOR_1
-  #define HEATER_1_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_2 > 0
-  #define THERMISTORHEATER_2 TEMP_SENSOR_2
-  #define HEATER_2_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_3 > 0
-  #define THERMISTORHEATER_3 TEMP_SENSOR_3
-  #define HEATER_3_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_BED > 0
-  #define THERMISTORBED TEMP_SENSOR_BED
-  #define BED_USES_THERMISTOR
-#endif
-#if TEMP_SENSOR_0 == -1
-  #define HEATER_0_USES_AD595
-#endif
-#if TEMP_SENSOR_1 == -1
-  #define HEATER_1_USES_AD595
-#endif
-#if TEMP_SENSOR_2 == -1
-  #define HEATER_2_USES_AD595
-#endif
-#if TEMP_SENSOR_3 == -1
-  #define HEATER_3_USES_AD595
-#endif
-#if TEMP_SENSOR_BED == -1
-  #define BED_USES_AD595
-#endif
-#if TEMP_SENSOR_0 == -2
-  #define HEATER_0_USES_MAX6675
-#endif
-#if TEMP_SENSOR_0 == 0
-  #undef HEATER_0_MINTEMP
-  #undef HEATER_0_MAXTEMP
-#endif
-#if TEMP_SENSOR_1 == 0
-  #undef HEATER_1_MINTEMP
-  #undef HEATER_1_MAXTEMP
-#endif
-#if TEMP_SENSOR_2 == 0
-  #undef HEATER_2_MINTEMP
-  #undef HEATER_2_MAXTEMP
-#endif
-#if TEMP_SENSOR_3 == 0
-  #undef HEATER_3_MINTEMP
-  #undef HEATER_3_MAXTEMP
-#endif
-#if TEMP_SENSOR_BED == 0
-  #undef BED_MINTEMP
-  #undef BED_MAXTEMP
-#endif
-
+#include "Conditionals.h"
+#include "SanityCheck.h"
 
-#endif //__CONFIGURATION_ADV_H
+#endif //CONFIGURATION_ADV_H

Marlin/language.h

 
 // LCD Menu Messages
 
-
 #if !(defined( DISPLAY_CHARSET_HD44780_JAPAN ) || defined( DISPLAY_CHARSET_HD44780_WESTERN ) || defined( DISPLAY_CHARSET_HD44780_CYRILLIC ))
   #define DISPLAY_CHARSET_HD44780_JAPAN
 #endif

Marlin/language_en.h

 #ifndef MSG_MOVE_AXIS
 #define MSG_MOVE_AXIS                       "Move axis"
 #endif
+#ifndef MSG_LEVEL_BED
+#define MSG_LEVEL_BED                       "Level bed"
+#endif
 #ifndef MSG_MOVE_X
 #define MSG_MOVE_X                          "Move X"
 #endif

Marlin/mesh_bed_leveling.cpp

+#include "mesh_bed_leveling.h"
+
+#if defined(MESH_BED_LEVELING)
+
+mesh_bed_leveling mbl;
+
+mesh_bed_leveling::mesh_bed_leveling() {
+    reset();
+}
+    
+void mesh_bed_leveling::reset() {
+    for (int y=0; y<MESH_NUM_Y_POINTS; y++) {
+        for (int x=0; x<MESH_NUM_X_POINTS; x++) {
+            z_values[y][x] = 0;
+        }
+    }
+    active = 0;
+}
+
+#endif  // MESH_BED_LEVELING

Marlin/mesh_bed_leveling.h

+#include "Marlin.h"
+
+#if defined(MESH_BED_LEVELING)
+
+#define MESH_X_DIST ((MESH_MAX_X - MESH_MIN_X)/(MESH_NUM_X_POINTS - 1))
+#define MESH_Y_DIST ((MESH_MAX_Y - MESH_MIN_Y)/(MESH_NUM_Y_POINTS - 1))
+
+class mesh_bed_leveling {
+public:
+    uint8_t active;
+    float z_values[MESH_NUM_Y_POINTS][MESH_NUM_X_POINTS];
+    
+    mesh_bed_leveling();
+    
+    void reset();
+    
+    float get_x(int i) { return MESH_MIN_X + MESH_X_DIST*i; }
+    float get_y(int i) { return MESH_MIN_Y + MESH_Y_DIST*i; }
+    void set_z(int ix, int iy, float z) { z_values[iy][ix] = z; }
+    
+    int select_x_index(float x) {
+        int i = 1;
+        while (x > get_x(i) && i < MESH_NUM_X_POINTS-1) {
+            i++;
+        }
+        return i-1;
+    }
+    
+    int select_y_index(float y) {
+        int i = 1;
+        while (y > get_y(i) && i < MESH_NUM_Y_POINTS-1) {
+            i++;
+        }
+        return i-1;
+    }
+    
+    float calc_z0(float a0, float a1, float z1, float a2, float z2) {
+        float delta_z = (z2 - z1)/(a2 - a1);
+        float delta_a = a0 - a1;
+        return z1 + delta_a * delta_z;
+    }
+    
+    float get_z(float x0, float y0) {
+        int x_index = select_x_index(x0);
+        int y_index = select_y_index(y0);
+        float z1 = calc_z0(x0,
+                           get_x(x_index), z_values[y_index][x_index],
+                           get_x(x_index+1), z_values[y_index][x_index+1]);
+        float z2 = calc_z0(x0,
+                           get_x(x_index), z_values[y_index+1][x_index],
+                           get_x(x_index+1), z_values[y_index+1][x_index+1]);
+        float z0 = calc_z0(y0,
+                           get_y(y_index), z1,
+                           get_y(y_index+1), z2);
+        return z0;
+    }
+};
+
+extern mesh_bed_leveling mbl;
+
+#endif  // MESH_BED_LEVELING

Marlin/pins.h

 #ifndef PINS_H
 #define PINS_H
 
-#include "boards.h"
-
 // Preset optional pins
 #define X_MS1_PIN -1
 #define X_MS2_PIN -1

Marlin/planner.h

 // This module is to be considered a sub-module of stepper.c. Please don't include 
 // this file from any other module.
 
-#ifndef planner_h
-#define planner_h
+#ifndef PLANNER_H
+#define PLANNER_H
 
 #include "Marlin.h"
 
-#ifdef ENABLE_AUTO_BED_LEVELING
-#include "vector_3.h"
-#endif // ENABLE_AUTO_BED_LEVELING
-
 // This struct is used when buffering the setup for each linear movement "nominal" values are as specified in 
 // the source g-code and may never actually be reached if acceleration management is active.
 typedef struct {
   // Fields used by the bresenham algorithm for tracing the line
-  long steps_x, steps_y, steps_z, steps_e;  // Step count along each axis
+  long steps[NUM_AXIS];                     // Step count along each axis
   unsigned long step_event_count;           // The number of step events required to complete this block
   long accelerate_until;                    // The index of the step event on which to stop acceleration
   long decelerate_after;                    // The index of the step event on which to start decelerating
   #endif
 
   // Fields used by the motion planner to manage acceleration
-//  float speed_x, speed_y, speed_z, speed_e;        // Nominal mm/sec for each axis
+  // float speed_x, speed_y, speed_z, speed_e;          // Nominal mm/sec for each axis
   float nominal_speed;                               // The nominal speed for this block in mm/sec 
   float entry_speed;                                 // Entry speed at previous-current junction in mm/sec
   float max_entry_speed;                             // Maximum allowable junction entry speed in mm/sec
   unsigned long acceleration_st;                     // acceleration steps/sec^2
   unsigned long fan_speed;
   #ifdef BARICUDA
-  unsigned long valve_pressure;
-  unsigned long e_to_p_pressure;
+    unsigned long valve_pressure;
+    unsigned long e_to_p_pressure;
   #endif
   volatile char busy;
 } block_t;
 
-#ifdef ENABLE_AUTO_BED_LEVELING
-// this holds the required transform to compensate for bed level
-extern matrix_3x3 plan_bed_level_matrix;
-#endif // #ifdef ENABLE_AUTO_BED_LEVELING
+#define BLOCK_MOD(n) ((n)&(BLOCK_BUFFER_SIZE-1))
 
 // Initialize the motion plan subsystem      
 void plan_init();
 
-// Add a new linear movement to the buffer. x, y and z is the signed, absolute target position in 
-// millimaters. Feed rate specifies the speed of the motion.
-
-#ifdef ENABLE_AUTO_BED_LEVELING
-void plan_buffer_line(float x, float y, float z, const float &e, float feed_rate, const uint8_t &extruder);
-
-  #ifndef DELTA
-  // Get the position applying the bed level matrix if enabled
-  vector_3 plan_get_position();
-  #endif
-#else
-void plan_buffer_line(const float &x, const float &y, const float &z, const float &e, float feed_rate, const uint8_t &extruder);
-#endif // ENABLE_AUTO_BED_LEVELING
+void check_axes_activity();
 
-// Set position. Used for G92 instructions.
-#ifdef ENABLE_AUTO_BED_LEVELING
-void plan_set_position(float x, float y, float z, const float &e);
+// Get the number of buffered moves
+extern volatile unsigned char block_buffer_head;
+extern volatile unsigned char block_buffer_tail;
+FORCE_INLINE uint8_t movesplanned() { return BLOCK_MOD(block_buffer_head - block_buffer_tail + BLOCK_BUFFER_SIZE); }
+
+#if defined(ENABLE_AUTO_BED_LEVELING) || defined(MESH_BED_LEVELING)
+  #if defined(ENABLE_AUTO_BED_LEVELING)
+    #include "vector_3.h"
+    // this holds the required transform to compensate for bed level
+    extern matrix_3x3 plan_bed_level_matrix;
+    // Get the position applying the bed level matrix if enabled
+    vector_3 plan_get_position();
+  #endif  // ENABLE_AUTO_BED_LEVELING
+  // Add a new linear movement to the buffer. x, y and z is the signed, absolute target position in 
+  // millimeters. Feed rate specifies the speed of the motion.
+  void plan_buffer_line(float x, float y, float z, const float &e, float feed_rate, const uint8_t &extruder);
+  // Set position. Used for G92 instructions.
+  void plan_set_position(float x, float y, float z, const float &e);
 #else
-void plan_set_position(const float &x, const float &y, const float &z, const float &e);
-#endif // ENABLE_AUTO_BED_LEVELING
+  void plan_buffer_line(const float &x, const float &y, const float &z, const float &e, float feed_rate, const uint8_t &extruder);
+  void plan_set_position(const float &x, const float &y, const float &z, const float &e);
+#endif // ENABLE_AUTO_BED_LEVELING || MESH_BED_LEVELING
 
 void plan_set_e_position(const float &e);
 
-
-
-void check_axes_activity();
-uint8_t movesplanned(); //return the nr of buffered moves
-
 extern unsigned long minsegmenttime;
 extern float max_feedrate[NUM_AXIS]; // set the max speeds
 extern float axis_steps_per_unit[NUM_AXIS];
 extern unsigned long axis_steps_per_sqr_second[NUM_AXIS];
 
 #ifdef AUTOTEMP
-    extern bool autotemp_enabled;
-    extern float autotemp_max;
-    extern float autotemp_min;
-    extern float autotemp_factor;
+  extern bool autotemp_enabled;
+  extern float autotemp_max;
+  extern float autotemp_min;
+  extern float autotemp_factor;
 #endif
 
-    
-
-
-extern block_t block_buffer[BLOCK_BUFFER_SIZE];            // A ring buffer for motion instfructions
+extern block_t block_buffer[BLOCK_BUFFER_SIZE];            // A ring buffer for motion instructions
 extern volatile unsigned char block_buffer_head;           // Index of the next block to be pushed
 extern volatile unsigned char block_buffer_tail; 
-// Called when the current block is no longer needed. Discards the block and makes the memory
-// availible for new blocks.    
-FORCE_INLINE void plan_discard_current_block()  
-{
-  if (block_buffer_head != block_buffer_tail) {
-    block_buffer_tail = (block_buffer_tail + 1) & (BLOCK_BUFFER_SIZE - 1);  
-  }
+
+// Returns true if the buffer has a queued block, false otherwise
+FORCE_INLINE bool blocks_queued() { return (block_buffer_head != block_buffer_tail); }
+
+// Called when the current block is no longer needed. Discards
+// the block and makes the memory available for new blocks.
+FORCE_INLINE void plan_discard_current_block() {
+  if (blocks_queued())
+    block_buffer_tail = BLOCK_MOD(block_buffer_tail + 1);
 }
 
 // Gets the current block. Returns NULL if buffer empty
-FORCE_INLINE block_t *plan_get_current_block() 
-{
-  if (block_buffer_head == block_buffer_tail) { 
-    return(NULL); 
+FORCE_INLINE block_t *plan_get_current_block() {
+  if (blocks_queued()) {
+    block_t *block = &block_buffer[block_buffer_tail];
+    block->busy = true;
+    return block;
   }
-  block_t *block = &block_buffer[block_buffer_tail];
-  block->busy = true;
-  return(block);
+  else
+    return NULL;
 }
 
-// Returns true if the buffer has a queued block, false otherwise
-FORCE_INLINE bool blocks_queued() { return (block_buffer_head != block_buffer_tail); }
-
 #ifdef PREVENT_DANGEROUS_EXTRUDE
-void set_extrude_min_temp(float temp);
+  void set_extrude_min_temp(float temp);
 #endif
 
 void reset_acceleration_rates();
-#endif
+
+#endif //PLANNER_H

Marlin/stepper.cpp

 static bool check_endstops = true;
 
 volatile long count_position[NUM_AXIS] = { 0 };
-volatile signed char count_direction[NUM_AXIS] = { 1 };
+volatile signed char count_direction[NUM_AXIS] = { 1, 1, 1, 1 };
 
 
 //===========================================================================
       X_DIR_WRITE(v); \
       X2_DIR_WRITE(v); \
     } \
-    else{ \
-      if (current_block->active_extruder) \
-        X2_DIR_WRITE(v); \
-      else \
-        X_DIR_WRITE(v); \
+    else { \
+      if (current_block->active_extruder) X2_DIR_WRITE(v); else X_DIR_WRITE(v); \
     }
   #define X_APPLY_STEP(v,ALWAYS) \
     if (extruder_duplication_enabled || ALWAYS) { \
       X2_STEP_WRITE(v); \
     } \
     else { \
-      if (current_block->active_extruder != 0) \
-        X2_STEP_WRITE(v); \
-      else \
-        X_STEP_WRITE(v); \
+      if (current_block->active_extruder != 0) X2_STEP_WRITE(v); else X_STEP_WRITE(v); \
     }
 #else
   #define X_APPLY_DIR(v,Q) X_DIR_WRITE(v)
 #endif
 
 #ifdef Y_DUAL_STEPPER_DRIVERS
-  #define Y_APPLY_DIR(v,Q) Y_DIR_WRITE(v), Y2_DIR_WRITE((v) != INVERT_Y2_VS_Y_DIR)
-  #define Y_APPLY_STEP(v,Q) Y_STEP_WRITE(v), Y2_STEP_WRITE(v)
+  #define Y_APPLY_DIR(v,Q) { Y_DIR_WRITE(v); Y2_DIR_WRITE((v) != INVERT_Y2_VS_Y_DIR); }
+  #define Y_APPLY_STEP(v,Q) { Y_STEP_WRITE(v); Y2_STEP_WRITE(v); }
 #else
   #define Y_APPLY_DIR(v,Q) Y_DIR_WRITE(v)
   #define Y_APPLY_STEP(v,Q) Y_STEP_WRITE(v)
 #endif
 
 #ifdef Z_DUAL_STEPPER_DRIVERS
-  #define Z_APPLY_DIR(v,Q) Z_DIR_WRITE(v), Z2_DIR_WRITE(v)
-  #define Z_APPLY_STEP(v,Q) Z_STEP_WRITE(v), Z2_STEP_WRITE(v)
+  #define Z_APPLY_DIR(v,Q) { Z_DIR_WRITE(v); Z2_DIR_WRITE(v); }
+  #define Z_APPLY_STEP(v,Q) { Z_STEP_WRITE(v); Z2_STEP_WRITE(v); }
 #else
   #define Z_APPLY_DIR(v,Q) Z_DIR_WRITE(v)
   #define Z_APPLY_STEP(v,Q) Z_STEP_WRITE(v)
       step_events_completed = 0;
 
       #ifdef Z_LATE_ENABLE
-        if (current_block->steps_z > 0) {
+        if (current_block->steps[Z_AXIS] > 0) {
           enable_z();
           OCR1A = 2000; //1ms wait
           return;
 
     #define UPDATE_ENDSTOP(axis,AXIS,minmax,MINMAX) \
       bool axis ##_## minmax ##_endstop = (READ(AXIS ##_## MINMAX ##_PIN) != AXIS ##_## MINMAX ##_ENDSTOP_INVERTING); \
-      if (axis ##_## minmax ##_endstop && old_## axis ##_## minmax ##_endstop && (current_block->steps_## axis > 0)) { \
+      if (axis ##_## minmax ##_endstop && old_## axis ##_## minmax ##_endstop && (current_block->steps[AXIS ##_AXIS] > 0)) { \
         endstops_trigsteps[AXIS ##_AXIS] = count_position[AXIS ##_AXIS]; \
         endstop_## axis ##_hit = true; \
         step_events_completed = current_block->step_event_count; \
 
     // Check X and Y endstops
     if (check_endstops) {
-      #ifndef COREXY
-        if (TEST(out_bits, X_AXIS))   // stepping along -X axis (regular cartesians bot)
-      #else
+      #ifdef COREXY
         // Head direction in -X axis for CoreXY bots.
         // If DeltaX == -DeltaY, the movement is only in Y axis
-        if (current_block->steps_x != current_block->steps_y || (TEST(out_bits, X_AXIS) == TEST(out_bits, Y_AXIS)))      
-            if (TEST(out_bits, X_HEAD))
-      #endif
-            { // -direction
-              #ifdef DUAL_X_CARRIAGE
-                // with 2 x-carriages, endstops are only checked in the homing direction for the active extruder
-                if ((current_block->active_extruder == 0 && X_HOME_DIR == -1) || (current_block->active_extruder != 0 && X2_HOME_DIR == -1))
-              #endif          
-                {
-                  #if defined(X_MIN_PIN) && X_MIN_PIN >= 0
-                    UPDATE_ENDSTOP(x, X, min, MIN);
-                  #endif
-                }
-            }
-            else { // +direction
-              #ifdef DUAL_X_CARRIAGE
-                // with 2 x-carriages, endstops are only checked in the homing direction for the active extruder
-                if ((current_block->active_extruder == 0 && X_HOME_DIR == 1) || (current_block->active_extruder != 0 && X2_HOME_DIR == 1))
-              #endif
-                {
-                  #if defined(X_MAX_PIN) && X_MAX_PIN >= 0
-                    UPDATE_ENDSTOP(x, X, max, MAX);
-                  #endif
-                }
-            }
-      #ifndef COREXY
-        if (TEST(out_bits, Y_AXIS))   // -direction
+        if (current_block->steps[A_AXIS] != current_block->steps[B_AXIS] || (TEST(out_bits, A_AXIS) == TEST(out_bits, B_AXIS)))
+          if (TEST(out_bits, X_HEAD))
       #else
+          if (TEST(out_bits, X_AXIS))   // stepping along -X axis (regular cartesians bot)
+      #endif
+          { // -direction
+            #ifdef DUAL_X_CARRIAGE
+              // with 2 x-carriages, endstops are only checked in the homing direction for the active extruder
+              if ((current_block->active_extruder == 0 && X_HOME_DIR == -1) || (current_block->active_extruder != 0 && X2_HOME_DIR == -1))
+            #endif          
+              {
+                #if defined(X_MIN_PIN) && X_MIN_PIN >= 0
+                  UPDATE_ENDSTOP(x, X, min, MIN);
+                #endif
+              }
+          }
+          else { // +direction
+            #ifdef DUAL_X_CARRIAGE
+              // with 2 x-carriages, endstops are only checked in the homing direction for the active extruder
+              if ((current_block->active_extruder == 0 && X_HOME_DIR == 1) || (current_block->active_extruder != 0 && X2_HOME_DIR == 1))
+            #endif
+              {
+                #if defined(X_MAX_PIN) && X_MAX_PIN >= 0
+                  UPDATE_ENDSTOP(x, X, max, MAX);
+                #endif
+              }
+          }
+      #ifdef COREXY
         // Head direction in -Y axis for CoreXY bots.
         // If DeltaX == DeltaY, the movement is only in X axis
-        if (current_block->steps_x != current_block->steps_y || (TEST(out_bits, X_AXIS) != TEST(out_bits, Y_AXIS)))
-            if (TEST(out_bits, Y_HEAD))             
+        if (current_block->steps[A_AXIS] != current_block->steps[B_AXIS] || (TEST(out_bits, A_AXIS) != TEST(out_bits, B_AXIS)))
+          if (TEST(out_bits, Y_HEAD))
+      #else
+          if (TEST(out_bits, Y_AXIS))   // -direction
       #endif
-            { // -direction
-              #if defined(Y_MIN_PIN) && Y_MIN_PIN >= 0
-                UPDATE_ENDSTOP(y, Y, min, MIN);
-              #endif
-            }
-            else { // +direction
-              #if defined(Y_MAX_PIN) && Y_MAX_PIN >= 0
-                UPDATE_ENDSTOP(y, Y, max, MAX);
-              #endif
-            }
+          { // -direction
+            #if defined(Y_MIN_PIN) && Y_MIN_PIN >= 0
+              UPDATE_ENDSTOP(y, Y, min, MIN);
+            #endif
+          }
+          else { // +direction
+            #if defined(Y_MAX_PIN) && Y_MAX_PIN >= 0
+              UPDATE_ENDSTOP(y, Y, max, MAX);
+            #endif
+          }
     }
 
     if (TEST(out_bits, Z_AXIS)) {   // -direction
       #endif
 
       #ifdef ADVANCE
-        counter_e += current_block->steps_e;
+        counter_e += current_block->steps[E_AXIS];
         if (counter_e > 0) {
           counter_e -= current_block->step_event_count;
           e_steps[current_block->active_extruder] += TEST(out_bits, E_AXIS) ? -1 : 1;
          * instead of doing each in turn. The extra tests add enough
          * lag to allow it work with without needing NOPs
          */
-        counter_x += current_block->steps_x;
-        if (counter_x > 0) X_STEP_WRITE(HIGH);
-        counter_y += current_block->steps_y;
-        if (counter_y > 0) Y_STEP_WRITE(HIGH);
-        counter_z += current_block->steps_z;
-        if (counter_z > 0) Z_STEP_WRITE(HIGH);
+        #define STEP_ADD(axis, AXIS) \
+         counter_## axis += current_block->steps[AXIS ##_AXIS]; \
+         if (counter_## axis > 0) { AXIS ##_STEP_WRITE(HIGH); }
+        STEP_ADD(x,X);
+        STEP_ADD(y,Y);
+        STEP_ADD(z,Z);
         #ifndef ADVANCE
-          counter_e += current_block->steps_e;
-          if (counter_e > 0) E_STEP_WRITE(HIGH);
+          STEP_ADD(e,E);
         #endif
 
         #define STEP_IF_COUNTER(axis, AXIS) \
       #else // !CONFIG_STEPPERS_TOSHIBA
 
         #define APPLY_MOVEMENT(axis, AXIS) \
-          counter_## axis += current_block->steps_## axis; \
+          counter_## axis += current_block->steps[AXIS ##_AXIS]; \
           if (counter_## axis > 0) { \
             AXIS ##_APPLY_STEP(!INVERT_## AXIS ##_STEP_PIN,0); \
             counter_## axis -= current_block->step_event_count; \

Marlin/temperature.cpp

 //================================== macros =================================
 //===========================================================================
 
-#if EXTRUDERS > 4
-  #error Unsupported number of extruders
-#elif EXTRUDERS > 3
-  #define ARRAY_BY_EXTRUDERS(v1, v2, v3, v4) { v1, v2, v3, v4 }
-#elif EXTRUDERS > 2
-  #define ARRAY_BY_EXTRUDERS(v1, v2, v3, v4) { v1, v2, v3 }
-#elif EXTRUDERS > 1
-  #define ARRAY_BY_EXTRUDERS(v1, v2, v3, v4) { v1, v2 }
-#else
-  #define ARRAY_BY_EXTRUDERS(v1, v2, v3, v4) { v1 }
+#ifdef K1 // Defined in Configuration.h in the PID settings
+  #define K2 (1.0-K1)
 #endif
 
-#define HAS_TEMP_0 (defined(TEMP_0_PIN) && TEMP_0_PIN >= 0)
-#define HAS_TEMP_1 (defined(TEMP_1_PIN) && TEMP_1_PIN >= 0)
-#define HAS_TEMP_2 (defined(TEMP_2_PIN) && TEMP_2_PIN >= 0)
-#define HAS_TEMP_3 (defined(TEMP_3_PIN) && TEMP_3_PIN >= 0)
-#define HAS_TEMP_BED (defined(TEMP_BED_PIN) && TEMP_BED_PIN >= 0)
-#define HAS_FILAMENT_SENSOR (defined(FILAMENT_SENSOR) && defined(FILWIDTH_PIN) && FILWIDTH_PIN >= 0)
-#define HAS_HEATER_0 (defined(HEATER_0_PIN) && HEATER_0_PIN >= 0)
-#define HAS_HEATER_1 (defined(HEATER_1_PIN) && HEATER_1_PIN >= 0)
-#define HAS_HEATER_2 (defined(HEATER_2_PIN) && HEATER_2_PIN >= 0)
-#define HAS_HEATER_3 (defined(HEATER_3_PIN) && HEATER_3_PIN >= 0)
-#define HAS_HEATER_BED (defined(HEATER_BED_PIN) && HEATER_BED_PIN >= 0)
-#define HAS_AUTO_FAN_0 (defined(EXTRUDER_0_AUTO_FAN_PIN) && EXTRUDER_0_AUTO_FAN_PIN >= 0)
-#define HAS_AUTO_FAN_1 (defined(EXTRUDER_1_AUTO_FAN_PIN) && EXTRUDER_1_AUTO_FAN_PIN >= 0)
-#define HAS_AUTO_FAN_2 (defined(EXTRUDER_2_AUTO_FAN_PIN) && EXTRUDER_2_AUTO_FAN_PIN >= 0)
-#define HAS_AUTO_FAN_3 (defined(EXTRUDER_3_AUTO_FAN_PIN) && EXTRUDER_3_AUTO_FAN_PIN >= 0)
-#define HAS_AUTO_FAN HAS_AUTO_FAN_0 || HAS_AUTO_FAN_1 || HAS_AUTO_FAN_2 || HAS_AUTO_FAN_3
-#define HAS_FAN (defined(FAN_PIN) && FAN_PIN >= 0)
-
 //===========================================================================
 //============================= public variables ============================
 //===========================================================================
 
-#ifdef K1 // Defined in Configuration.h in the PID settings
-  #define K2 (1.0-K1)
-#endif
-
-// Sampling period of the temperature routine
-#ifdef PID_dT
-  #undef PID_dT
-#endif
-#define PID_dT ((OVERSAMPLENR * 12.0)/(F_CPU / 64.0 / 256.0))
-
 int target_temperature[EXTRUDERS] = { 0 };
 int target_temperature_bed = 0;
 int current_temperature_raw[EXTRUDERS] = { 0 };
   static float temp_iState_min_bed;
   static float temp_iState_max_bed;
 #else //PIDTEMPBED
-	static unsigned long  previous_millis_bed_heater;
+  static unsigned long  previous_millis_bed_heater;
 #endif //PIDTEMPBED
   static unsigned char soft_pwm[EXTRUDERS];
 
 // Init min and max temp with extreme values to prevent false errors during startup
 static int minttemp_raw[EXTRUDERS] = ARRAY_BY_EXTRUDERS( HEATER_0_RAW_LO_TEMP , HEATER_1_RAW_LO_TEMP , HEATER_2_RAW_LO_TEMP, HEATER_3_RAW_LO_TEMP);
 static int maxttemp_raw[EXTRUDERS] = ARRAY_BY_EXTRUDERS( HEATER_0_RAW_HI_TEMP , HEATER_1_RAW_HI_TEMP , HEATER_2_RAW_HI_TEMP, HEATER_3_RAW_HI_TEMP);
-static int minttemp[EXTRUDERS] = ARRAY_BY_EXTRUDERS( 0, 0, 0, 0 );
+static int minttemp[EXTRUDERS] = { 0 };
 static int maxttemp[EXTRUDERS] = ARRAY_BY_EXTRUDERS( 16383, 16383, 16383, 16383 );
 //static int bed_minttemp_raw = HEATER_BED_RAW_LO_TEMP; /* No bed mintemp error implemented?!? */
 #ifdef BED_MAXTEMP
 static void updateTemperaturesFromRawValues();
 
 #ifdef WATCH_TEMP_PERIOD
-  int watch_start_temp[EXTRUDERS] = ARRAY_BY_EXTRUDERS(0,0,0,0);
-  unsigned long watchmillis[EXTRUDERS] = ARRAY_BY_EXTRUDERS(0,0,0,0);
+  int watch_start_temp[EXTRUDERS] = { 0 };
+  unsigned long watchmillis[EXTRUDERS] = { 0 };
 #endif //WATCH_TEMP_PERIOD
 
 #ifndef SOFT_PWM_SCALE
     SERIAL_ECHOLN(MSG_PID_BAD_EXTRUDER_NUM);
     return;
   }
-	
+  
   SERIAL_ECHOLN(MSG_PID_AUTOTUNE_START);
 
   disable_heater(); // switch off all heaters.
 
 #if HAS_AUTO_FAN
 
-  #if HAS_FAN
-    #if EXTRUDER_0_AUTO_FAN_PIN == FAN_PIN
-       #error "You cannot set EXTRUDER_0_AUTO_FAN_PIN equal to FAN_PIN"
-    #endif
-    #if EXTRUDER_1_AUTO_FAN_PIN == FAN_PIN
-       #error "You cannot set EXTRUDER_1_AUTO_FAN_PIN equal to FAN_PIN"
-    #endif
-    #if EXTRUDER_2_AUTO_FAN_PIN == FAN_PIN
-       #error "You cannot set EXTRUDER_2_AUTO_FAN_PIN equal to FAN_PIN"
-    #endif
-    #if EXTRUDER_3_AUTO_FAN_PIN == FAN_PIN
-       #error "You cannot set EXTRUDER_3_AUTO_FAN_PIN equal to FAN_PIN"
-    #endif
-  #endif 
-
 void setExtruderAutoFanState(int pin, bool state)
 {
   unsigned char newFanSpeed = (state != 0) ? EXTRUDER_AUTO_FAN_SPEED : 0;
 #endif // any extruder auto fan pins set
 
 //
-// Error checking and Write Routines
+// Temperature Error Handlers
 //
-#if !HAS_HEATER_0
-  #error HEATER_0_PIN not defined for this board
-#endif
-#define WRITE_HEATER_0P(v) WRITE(HEATER_0_PIN, v)
-#if EXTRUDERS > 1 || defined(HEATERS_PARALLEL)
-  #if !HAS_HEATER_1
-    #error HEATER_1_PIN not defined for this board
-  #endif
-  #define WRITE_HEATER_1(v) WRITE(HEATER_1_PIN, v)
-  #if EXTRUDERS > 2
-    #if !HAS_HEATER_2
-      #error HEATER_2_PIN not defined for this board
-    #endif
-    #define WRITE_HEATER_2(v) WRITE(HEATER_2_PIN, v)
-    #if EXTRUDERS > 3
-      #if !HAS_HEATER_3
-        #error HEATER_3_PIN not defined for this board
-      #endif
-      #define WRITE_HEATER_3(v) WRITE(HEATER_3_PIN, v)
-    #endif
-  #endif
-#endif
-#ifdef HEATERS_PARALLEL
-  #define WRITE_HEATER_0(v) { WRITE_HEATER_0P(v); WRITE_HEATER_1(v); }
-#else
-  #define WRITE_HEATER_0(v) WRITE_HEATER_0P(v)
-#endif
-#if HAS_HEATER_BED
-  #define WRITE_HEATER_BED(v) WRITE(HEATER_BED_PIN, v)
-#endif
-#if HAS_FAN
-  #define WRITE_FAN(v) WRITE(FAN_PIN, v)
-#endif
-
 inline void _temp_error(int e, const char *msg1, const char *msg2) {
   if (!IsStopped()) {
     SERIAL_ERROR_START;
 
   updateTemperaturesFromRawValues();
 
-  #ifdef HEATER_0_USES_MAX6675
-    float ct = current_temperature[0];
-    if (ct > min(HEATER_0_MAXTEMP, 1023)) max_temp_error(0);
-    if (ct < max(HEATER_0_MINTEMP, 0.01)) min_temp_error(0);
-  #endif //HEATER_0_USES_MAX6675
-
   unsigned long ms = millis();
 
   // Loop through all extruders
   #ifdef FILAMENT_SENSOR
     if (filament_sensor) {
       meas_shift_index = delay_index1 - meas_delay_cm;
-		  if (meas_shift_index < 0) meas_shift_index += MAX_MEASUREMENT_DELAY + 1;  //loop around buffer if needed
-		  
+      if (meas_shift_index < 0) meas_shift_index += MAX_MEASUREMENT_DELAY + 1;  //loop around buffer if needed
+      
       // Get the delayed info and add 100 to reconstitute to a percent of
       // the nominal filament diameter then square it to get an area
       meas_shift_index = constrain(meas_shift_index, 0, MAX_MEASUREMENT_DELAY);
   for (int i=0; i<EXTRUDERS; i++) setTargetHotend(0, i);
   setTargetBed(0);
 
+  #define DISABLE_HEATER(NR) { \
+    target_temperature[NR] = 0; \
+    soft_pwm[NR] = 0; \
+    WRITE_HEATER_ ## NR (LOW); \
+  }
+
   #if HAS_TEMP_0
     target_temperature[0] = 0;
     soft_pwm[0] = 0;
-    WRITE_HEATER_0P(LOW); // If HEATERS_PARALLEL should apply, change to WRITE_HEATER_0
+    WRITE_HEATER_0P(LOW); // Should HEATERS_PARALLEL apply here? Then change to DISABLE_HEATER(0)
   #endif
 
   #if EXTRUDERS > 1 && HAS_TEMP_1
-    target_temperature[1] = 0;
-    soft_pwm[1] = 0;
-    WRITE_HEATER_1(LOW);
+    DISABLE_HEATER(1);
   #endif
 
   #if EXTRUDERS > 2 && HAS_TEMP_2
-    target_temperature[2] = 0;
-    soft_pwm[2] = 0;
-    WRITE_HEATER_2(LOW);
+    DISABLE_HEATER(2);
   #endif
 
   #if EXTRUDERS > 3 && HAS_TEMP_3
-    target_temperature[3] = 0;
-    soft_pwm[3] = 0;
-    WRITE_HEATER_3(LOW);
+    DISABLE_HEATER(3);
   #endif
 
   #if HAS_TEMP_BED
 // Timer 0 is shared with millies
 //
 ISR(TIMER0_COMPB_vect) {
+  #ifdef TEMP_SENSOR_1_AS_REDUNDANT
+    #define TEMP_SENSOR_COUNT 2
+  #else 
+    #define TEMP_SENSOR_COUNT EXTRUDERS
+  #endif
+
   //these variables are only accesible from the ISR, but static, so they don't lose their value
   static unsigned char temp_count = 0;
-  static unsigned long raw_temp_0_value = 0;
-  static unsigned long raw_temp_1_value = 0;
-  static unsigned long raw_temp_2_value = 0;
-  static unsigned long raw_temp_3_value = 0;
+  static unsigned long raw_temp_value[TEMP_SENSOR_COUNT] = { 0 };
   static unsigned long raw_temp_bed_value = 0;
   static TempState temp_state = StartupDelay;
   static unsigned char pwm_count = BIT(SOFT_PWM_SCALE);
       break;
     case MeasureTemp_0:
       #if HAS_TEMP_0
-        raw_temp_0_value += ADC;
+        raw_temp_value[0] += ADC;
       #endif
       temp_state = PrepareTemp_BED;
       break;
+
     case PrepareTemp_BED:
       #if HAS_TEMP_BED
         START_ADC(TEMP_BED_PIN);
       #endif
       temp_state = PrepareTemp_1;
       break;
+
     case PrepareTemp_1:
       #if HAS_TEMP_1
         START_ADC(TEMP_1_PIN);
       break;
     case MeasureTemp_1:
       #if HAS_TEMP_1
-        raw_temp_1_value += ADC;
+        raw_temp_value[1] += ADC;
       #endif
       temp_state = PrepareTemp_2;
       break;
+
     case PrepareTemp_2:
       #if HAS_TEMP_2
         START_ADC(TEMP_2_PIN);
       break;
     case MeasureTemp_2:
       #if HAS_TEMP_2
-        raw_temp_2_value += ADC;
+        raw_temp_value[2] += ADC;
       #endif
       temp_state = PrepareTemp_3;
       break;
+
     case PrepareTemp_3:
       #if HAS_TEMP_3
         START_ADC(TEMP_3_PIN);
       break;
     case MeasureTemp_3:
       #if HAS_TEMP_3
-        raw_temp_3_value += ADC;
+        raw_temp_value[3] += ADC;
       #endif
       temp_state = Prepare_FILWIDTH;
       break;
+
     case Prepare_FILWIDTH:
       #if HAS_FILAMENT_SENSOR
         START_ADC(FILWIDTH_PIN);
       temp_state = PrepareTemp_0;
       temp_count++;
       break;
+
     case StartupDelay:
       temp_state = PrepareTemp_0;
       break;
     //   SERIAL_ERRORLNPGM("Temp measurement error!");
     //   break;
   } // switch(temp_state)
-    
+
   if (temp_count >= OVERSAMPLENR) { // 10 * 16 * 1/(16000000/64/256)  = 164ms.
     if (!temp_meas_ready) { //Only update the raw values if they have been read. Else we could be updating them during reading.
       #ifndef HEATER_0_USES_MAX6675
-        current_temperature_raw[0] = raw_temp_0_value;
+        current_temperature_raw[0] = raw_temp_value[0];
       #endif
       #if EXTRUDERS > 1
-        current_temperature_raw[1] = raw_temp_1_value;
+        current_temperature_raw[1] = raw_temp_value[1];
         #if EXTRUDERS > 2
-          current_temperature_raw[2] = raw_temp_2_value;
+          current_temperature_raw[2] = raw_temp_value[2];
           #if EXTRUDERS > 3
-            current_temperature_raw[3] = raw_temp_3_value;
+            current_temperature_raw[3] = raw_temp_value[3];
           #endif
         #endif
       #endif
       #ifdef TEMP_SENSOR_1_AS_REDUNDANT
-        redundant_temperature_raw = raw_temp_1_value;
+        redundant_temperature_raw = raw_temp_value[1];
       #endif
       current_temperature_bed_raw = raw_temp_bed_value;
     } //!temp_meas_ready
     #if HAS_FILAMENT_SENSOR
       current_raw_filwidth = raw_filwidth_value >> 10;  // Divide to get to 0-16384 range since we used 1/128 IIR filter approach
     #endif
-    
+
     temp_meas_ready = true;
     temp_count = 0;
-    raw_temp_0_value = 0;
-    raw_temp_1_value = 0;
-    raw_temp_2_value = 0;
-    raw_temp_3_value = 0;
+    for (int i = 0; i < TEMP_SENSOR_COUNT; i++) raw_temp_value[i] = 0;
     raw_temp_bed_value = 0;
 
-    #if HEATER_0_RAW_LO_TEMP > HEATER_0_RAW_HI_TEMP
-      #define MAXTEST <=
-      #define MINTEST >=
+    #ifdef HEATER_0_USES_MAX6675
+      float ct = current_temperature[0];
+      if (ct > min(HEATER_0_MAXTEMP, 1023)) max_temp_error(0);
+      if (ct < max(HEATER_0_MINTEMP, 0.01)) min_temp_error(0);
     #else
-      #define MAXTEST >=
-      #define MINTEST <=
+      #if HEATER_0_RAW_LO_TEMP > HEATER_0_RAW_HI_TEMP
+        #define GE0 <=
+      #else
+        #define GE0 >=
+      #endif
+      if (current_temperature_raw[0] GE0 maxttemp_raw[0]) max_temp_error(0);
+      if (minttemp_raw[0] GE0 current_temperature_raw[0]) min_temp_error(0);
     #endif
 
-    for (int i=0; i<EXTRUDERS; i++) {
-      if (current_temperature_raw[i] MAXTEST maxttemp_raw[i]) max_temp_error(i);
-      else if (current_temperature_raw[i] MINTEST minttemp_raw[i]) min_temp_error(i);
-    }
-    /* No bed MINTEMP error? */
+    #if EXTRUDERS > 1
+      #if HEATER_1_RAW_LO_TEMP > HEATER_1_RAW_HI_TEMP
+        #define GE1 <=
+      #else
+        #define GE1 >=
+      #endif
+      if (current_temperature_raw[1] GE1 maxttemp_raw[1]) max_temp_error(1);
+      if (minttemp_raw[1] GE0 current_temperature_raw[1]) min_temp_error(1);
+
+      #if EXTRUDERS > 2
+        #if HEATER_2_RAW_LO_TEMP > HEATER_2_RAW_HI_TEMP
+          #define GE2 <=
+        #else
+          #define GE2 >=
+        #endif
+        if (current_temperature_raw[2] GE2 maxttemp_raw[2]) max_temp_error(2);
+        if (minttemp_raw[2] GE0 current_temperature_raw[2]) min_temp_error(2);
+
+        #if EXTRUDERS > 3
+          #if HEATER_3_RAW_LO_TEMP > HEATER_3_RAW_HI_TEMP
+            #define GE3 <=
+          #else
+            #define GE3 >=
+          #endif
+          if (current_temperature_raw[3] GE3 maxttemp_raw[3]) max_temp_error(3);
+          if (minttemp_raw[3] GE0 current_temperature_raw[3]) min_temp_error(3);
+
+        #endif // EXTRUDERS > 3
+      #endif // EXTRUDERS > 2
+    #endif // EXTRUDERS > 1
+
     #if defined(BED_MAXTEMP) && (TEMP_SENSOR_BED != 0)
-      if (current_temperature_bed_raw MAXTEST bed_maxttemp_raw) {
-          target_temperature_bed = 0;
-          bed_max_temp_error();
-        }
+      #if HEATER_BED_RAW_LO_TEMP > HEATER_BED_RAW_HI_TEMP
+        #define GEBED <=
+      #else
+        #define GEBED >=
+      #endif
+      if (current_temperature_bed_raw GEBED bed_maxttemp_raw) {
+        target_temperature_bed = 0;
+        bed_max_temp_error();
+      }
     #endif
+
   } // temp_count >= OVERSAMPLENR
 
   #ifdef BABYSTEPPING

Marlin/ultralcd.cpp

-#include "temperature.h"
 #include "ultralcd.h"
 #ifdef ULTRA_LCD
 #include "Marlin.h"
 static void lcd_delta_calibrate_menu();
 #endif // DELTA_CALIBRATION_MENU
 
+#if defined(MANUAL_BED_LEVELING)
+#include "mesh_bed_leveling.h"
+static void _lcd_level_bed();
+static void _lcd_level_bed_homing();
+static void lcd_level_bed();
+#endif  // MANUAL_BED_LEVELING
+
 static void lcd_quick_feedback();//Cause an LCD refresh, and give the user visual or audible feedback that something has happened
 
 /* Different types of actions that can be used in menu items. */
   #define MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(type, label, args...) MENU_ITEM(setting_edit_callback_ ## type, label, PSTR(label), ## args)
 #endif //!ENCODER_RATE_MULTIPLIER
 #define END_MENU() \
-    if (encoderPosition / ENCODER_STEPS_PER_MENU_ITEM >= _menuItemNr) encoderPosition = _menuItemNr * ENCODER_STEPS_PER_MENU_ITEM - 1; \
-    if ((uint8_t)(encoderPosition / ENCODER_STEPS_PER_MENU_ITEM) >= currentMenuViewOffset + LCD_HEIGHT) { currentMenuViewOffset = (encoderPosition / ENCODER_STEPS_PER_MENU_ITEM) - LCD_HEIGHT + 1; lcdDrawUpdate = 1; _lineNr = currentMenuViewOffset - 1; _drawLineNr = -1; } \
+    if (encoderLine >= _menuItemNr) encoderPosition = _menuItemNr * ENCODER_STEPS_PER_MENU_ITEM - 1; encoderLine = encoderPosition / ENCODER_STEPS_PER_MENU_ITEM;\
+    if (encoderLine >= currentMenuViewOffset + LCD_HEIGHT) { currentMenuViewOffset = encoderLine - LCD_HEIGHT + 1; lcdDrawUpdate = 1; _lineNr = currentMenuViewOffset - 1; _drawLineNr = -1; } \
     } } while(0)
 
 /** Used variables to keep track of the menu */
 void lcd_set_home_offsets() {
   for(int8_t i=0; i < NUM_AXIS; i++) {
     if (i != E_AXIS) {
-      add_homing[i] -= current_position[i];
+      home_offset[i] -= current_position[i];
       current_position[i] = 0.0;
     }
   }
     }
   #endif
   MENU_ITEM(submenu, MSG_MOVE_AXIS, lcd_move_menu);
+
+  #if defined(MANUAL_BED_LEVELING)
+    MENU_ITEM(submenu, MSG_LEVEL_BED, lcd_level_bed);
+  #endif
 	
   END_MENU();
 }
   START_MENU();
   MENU_ITEM(back, MSG_CONTROL, lcd_control_menu);
   #ifdef ENABLE_AUTO_BED_LEVELING
-    MENU_ITEM_EDIT(float32, MSG_ZPROBE_ZOFFSET, &zprobe_zoffset, 0.5, 50);
+    MENU_ITEM_EDIT(float32, MSG_ZPROBE_ZOFFSET, &zprobe_zoffset, 0.0, 50);
   #endif
-  MENU_ITEM_EDIT(float5, MSG_ACC, &acceleration, 500, 99000);
+  MENU_ITEM_EDIT(float5, MSG_ACC, &acceleration, 10, 99000);
   MENU_ITEM_EDIT(float3, MSG_VXY_JERK, &max_xy_jerk, 1, 990);
   MENU_ITEM_EDIT(float52, MSG_VZ_JERK, &max_z_jerk, 0.1, 990);
   MENU_ITEM_EDIT(float3, MSG_VE_JERK, &max_e_jerk, 1, 990);
   MENU_ITEM_EDIT(float3, MSG_VTRAV_MIN, &mintravelfeedrate, 0, 999);
   MENU_ITEM_EDIT_CALLBACK(long5, MSG_AMAX MSG_X, &max_acceleration_units_per_sq_second[X_AXIS], 100, 99000, reset_acceleration_rates);
   MENU_ITEM_EDIT_CALLBACK(long5, MSG_AMAX MSG_Y, &max_acceleration_units_per_sq_second[Y_AXIS], 100, 99000, reset_acceleration_rates);
-  MENU_ITEM_EDIT_CALLBACK(long5, MSG_AMAX MSG_Z, &max_acceleration_units_per_sq_second[Z_AXIS], 100, 99000, reset_acceleration_rates);
+  MENU_ITEM_EDIT_CALLBACK(long5, MSG_AMAX MSG_Z, &max_acceleration_units_per_sq_second[Z_AXIS], 10, 99000, reset_acceleration_rates);
   MENU_ITEM_EDIT_CALLBACK(long5, MSG_AMAX MSG_E, &max_acceleration_units_per_sq_second[E_AXIS], 100, 99000, reset_acceleration_rates);
   MENU_ITEM_EDIT(float5, MSG_A_RETRACT, &retract_acceleration, 100, 99000);
   MENU_ITEM_EDIT(float5, MSG_A_TRAVEL, &travel_acceleration, 100, 99000);
      WRITE(SHIFT_OUT,HIGH);
      WRITE(SHIFT_LD,HIGH);
      WRITE(SHIFT_EN,LOW);
-  #else
-     #ifdef ULTIPANEL
-     #error ULTIPANEL requires an encoder
-     #endif
   #endif // SR_LCD_2W_NL
 #endif//!NEWPANEL
 
     #endif
 
     #ifdef ULTIPANEL
-      if (currentMenu != lcd_status_screen && millis() > timeoutToStatus) {
+      if (currentMenu != lcd_status_screen &&
+        #if defined(MANUAL_BED_LEVELING)
+          currentMenu != _lcd_level_bed && 
+          currentMenu != _lcd_level_bed_homing && 
+        #endif  // MANUAL_BED_LEVELING
+          millis() > timeoutToStatus) {
         lcd_return_to_status();
         lcdDrawUpdate = 2;
       }
   return conv;
 }
 
+#if defined(MANUAL_BED_LEVELING)
+static int _lcd_level_bed_position;
+static void _lcd_level_bed()
+{
+  if (encoderPosition != 0) {
+    refresh_cmd_timeout();
+    current_position[Z_AXIS] += float((int)encoderPosition) * 0.05;
+    if (min_software_endstops && current_position[Z_AXIS] < Z_MIN_POS) current_position[Z_AXIS] = Z_MIN_POS;
+    if (max_software_endstops && current_position[Z_AXIS] > Z_MAX_POS) current_position[Z_AXIS] = Z_MAX_POS;
+    encoderPosition = 0;
+    plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], manual_feedrate[Z_AXIS]/60, active_extruder);
+    lcdDrawUpdate = 1;
+  }
+  if (lcdDrawUpdate) lcd_implementation_drawedit(PSTR("Z"), ftostr32(current_position[Z_AXIS]));
+  static bool debounce_click = false;
+  if (LCD_CLICKED) {
+    if (!debounce_click) {
+      debounce_click = true;
+      int ix = _lcd_level_bed_position % MESH_NUM_X_POINTS;
+      int iy = _lcd_level_bed_position / MESH_NUM_X_POINTS;
+      mbl.set_z(ix, iy, current_position[Z_AXIS]);
+      _lcd_level_bed_position++;
+      if (_lcd_level_bed_position == MESH_NUM_X_POINTS*MESH_NUM_Y_POINTS) {
+        current_position[Z_AXIS] = MESH_HOME_SEARCH_Z;
+        plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], manual_feedrate[X_AXIS]/60, active_extruder);
+        mbl.active = 1;
+        enquecommands_P(PSTR("G28"));
+        lcd_return_to_status();
+      } else {
+        current_position[Z_AXIS] = MESH_HOME_SEARCH_Z;
+        plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], manual_feedrate[X_AXIS]/60, active_extruder);
+        ix = _lcd_level_bed_position % MESH_NUM_X_POINTS;
+        iy = _lcd_level_bed_position / MESH_NUM_X_POINTS;
+        if (iy&1) { // Zig zag
+          ix = (MESH_NUM_X_POINTS - 1) - ix;
+        }
+        current_position[X_AXIS] = mbl.get_x(ix);
+        current_position[Y_AXIS] = mbl.get_y(iy);
+        plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], manual_feedrate[X_AXIS]/60, active_extruder);
+        lcdDrawUpdate = 1;
+      }
+    }
+  } else {
+    debounce_click = false;
+  }
+}
+static void _lcd_level_bed_homing()
+{
+  if (axis_known_position[X_AXIS] &&
+      axis_known_position[Y_AXIS] &&
+      axis_known_position[Z_AXIS]) {
+    current_position[Z_AXIS] = MESH_HOME_SEARCH_Z;
+    plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]);
+    current_position[X_AXIS] = MESH_MIN_X;
+    current_position[Y_AXIS] = MESH_MIN_Y;
+    plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], manual_feedrate[X_AXIS]/60, active_extruder);
+    _lcd_level_bed_position = 0;
+    lcd_goto_menu(_lcd_level_bed);
+  }
+}
+static void lcd_level_bed()
+{
+  axis_known_position[X_AXIS] = false;
+  axis_known_position[Y_AXIS] = false;
+  axis_known_position[Z_AXIS] = false;
+  mbl.reset();
+  enquecommands_P(PSTR("G28"));
+  lcd_goto_menu(_lcd_level_bed_homing);
+}
+#endif  // MANUAL_BED_LEVELING
+
 #endif //ULTRA_LCD

Marlin/ultralcd.h

   void lcd_reset_alert_level();
   bool lcd_detected(void);
 
-#ifdef DOGLCD
-  extern int lcd_contrast;
-  void lcd_setcontrast(uint8_t value);
-#endif
+  #ifdef DOGLCD
+    extern int lcd_contrast;
+    void lcd_setcontrast(uint8_t value);
+  #endif
 
   static unsigned char blink = 0;	// Variable for visualization of fan rotation in GLCD
 
   #define LCD_TIMEOUT_TO_STATUS 15000
 
   #ifdef ULTIPANEL
-  void lcd_buttons_update();
-  extern volatile uint8_t buttons;  //the last checked buttons in a bit array.
-  #ifdef REPRAPWORLD_KEYPAD
-    extern volatile uint8_t buttons_reprapworld_keypad; // to store the keypad shift register values
-  #endif
+    void lcd_buttons_update();
+    extern volatile uint8_t buttons;  //the last checked buttons in a bit array.
+    #ifdef REPRAPWORLD_KEYPAD
+      extern volatile uint8_t buttons_reprapworld_keypad; // to store the keypad shift register values
+    #endif
   #else
-  FORCE_INLINE void lcd_buttons_update() {}
+    FORCE_INLINE void lcd_buttons_update() {}
   #endif
 
   extern int plaPreheatHotendTemp;
   extern int plaPreheatHPBTemp;
   extern int plaPreheatFanSpeed;
-
   extern int absPreheatHotendTemp;
   extern int absPreheatHPBTemp;
   extern int absPreheatFanSpeed;
-  
+
   extern bool cancel_heatup;
   
   #ifdef FILAMENT_LCD_DISPLAY
-        extern unsigned long message_millis;
+    extern unsigned long message_millis;
   #endif
 
   void lcd_buzz(long duration,uint16_t freq);