Merge branch 'Marlin_v1' of https://github.com/ErikZalm/Marlin into update_menu_plan

Marlin/Configuration.h

 //===========================================================================
 //============================= DELTA Printer ===============================
 //===========================================================================
-// For a Delta printer rplace the configuration files wilth the files in the
+// For a Delta printer replace the configuration files with the files in the
 // example_configurations/delta directory.
 //
 
 // 68 = Azteeg X3 Pro
 // 7  = Ultimaker
 // 71 = Ultimaker (Older electronics. Pre 1.5.4. This is rare)
+// 72 = Ultimainboard 2.x (Uses TEMP_SENSOR 20)
 // 77 = 3Drag Controller
 // 8  = Teensylu
 // 80 = Rumba
 // 702= Minitronics v1.0
 // 90 = Alpha OMCA board
 // 91 = Final OMCA board
-// 301 = Rambo
+// 301= Rambo
 // 21 = Elefu Ra Board (v3)
 
 #ifndef MOTHERBOARD
 
 #define POWER_SUPPLY 1
 
-// Define this to have the electronics keep the powersupply off on startup. If you don't know what this is leave it.
+// Define this to have the electronics keep the power supply off on startup. If you don't know what this is leave it.
 // #define PS_DEFAULT_OFF
 
 //===========================================================================
 // 0 is not used
 // 1 is 100k thermistor - best choice for EPCOS 100k (4.7k pullup)
 // 2 is 200k thermistor - ATC Semitec 204GT-2 (4.7k pullup)
-// 3 is mendel-parts thermistor (4.7k pullup)
+// 3 is Mendel-parts thermistor (4.7k pullup)
 // 4 is 10k thermistor !! do not use it for a hotend. It gives bad resolution at high temp. !!
 // 5 is 100K thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (4.7k pullup)
 // 6 is 100k EPCOS - Not as accurate as table 1 (created using a fluke thermocouple) (4.7k pullup)
 // 8 is 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup)
 // 9 is 100k GE Sensing AL03006-58.2K-97-G1 (4.7k pullup)
 // 10 is 100k RS thermistor 198-961 (4.7k pullup)
-// 60 is 100k Maker's Tool Works Kapton Bed Thermister
+// 20 is the PT100 circuit found in the Ultimainboard V2.x
+// 60 is 100k Maker's Tool Works Kapton Bed Thermistor
 //
 //    1k ohm pullup tables - This is not normal, you would have to have changed out your 4.7k for 1k
 //                          (but gives greater accuracy and more stable PID)
 // 51 is 100k thermistor - EPCOS (1k pullup)
 // 52 is 200k thermistor - ATC Semitec 204GT-2 (1k pullup)
 // 55 is 100k thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (1k pullup)
+//
+// 1047 is Pt1000 with 4k7 pullup
+// 1010 is Pt1000 with 1k pullup (non standard)
+// 147 is Pt100 with 4k7 pullup
+// 110 is Pt100 with 1k pullup (non standard)
 
 #define TEMP_SENSOR_0 -1
 #define TEMP_SENSOR_1 -1
   #define K1 0.95 //smoothing factor within the PID
   #define PID_dT ((OVERSAMPLENR * 8.0)/(F_CPU / 64.0 / 256.0)) //sampling period of the temperature routine
 
-// If you are using a preconfigured hotend then you can use one of the value sets by uncommenting it
+// If you are using a pre-configured hotend then you can use one of the value sets by uncommenting it
 // Ultimaker
     #define  DEFAULT_Kp 22.2
     #define  DEFAULT_Ki 1.08
     #define  DEFAULT_Kd 114
 
-// Makergear
+// MakerGear
 //    #define  DEFAULT_Kp 7.0
 //    #define  DEFAULT_Ki 0.1
 //    #define  DEFAULT_Kd 12
 #define ENDSTOPPULLUPS // Comment this out (using // at the start of the line) to disable the endstop pullup resistors
 
 #ifndef ENDSTOPPULLUPS
-  // fine Enstop settings: Individual Pullups. will be ignored if ENDSTOPPULLUPS is defined
+  // fine endstop settings: Individual pullups. will be ignored if ENDSTOPPULLUPS is defined
   // #define ENDSTOPPULLUP_XMAX
   // #define ENDSTOPPULLUP_YMAX
   // #define ENDSTOPPULLUP_ZMAX
   #define BACK_PROBE_BED_POSITION 180
   #define FRONT_PROBE_BED_POSITION 20
 
-  // these are the offsets to the prob relative to the extruder tip (Hotend - Probe)
+  // these are the offsets to the probe relative to the extruder tip (Hotend - Probe)
   #define X_PROBE_OFFSET_FROM_EXTRUDER -25
   #define Y_PROBE_OFFSET_FROM_EXTRUDER -29
   #define Z_PROBE_OFFSET_FROM_EXTRUDER -12.35
 //  #define PROBE_SERVO_DEACTIVATION_DELAY 300
 
 
-//If you have enabled the Bed Auto Levelling and are using the same Z Probe for Z Homing,
+//If you have enabled the Bed Auto Leveling and are using the same Z Probe for Z Homing,
 //it is highly recommended you let this Z_SAFE_HOMING enabled!!!
 
   #define Z_SAFE_HOMING   // This feature is meant to avoid Z homing with probe outside the bed area.
 //#define BED_CENTER_AT_0_0  // If defined, the center of the bed is at (X=0, Y=0)
 
 //Manual homing switch locations:
-// For deltabots this means top and center of the cartesian print volume.
+// For deltabots this means top and center of the Cartesian print volume.
 #define MANUAL_X_HOME_POS 0
 #define MANUAL_Y_HOME_POS 0
 #define MANUAL_Z_HOME_POS 0
 
 #define DEFAULT_AXIS_STEPS_PER_UNIT   {78.7402,78.7402,200.0*8/3,760*1.1}  // default steps per unit for Ultimaker
 #define DEFAULT_MAX_FEEDRATE          {500, 500, 5, 25}    // (mm/sec)
-#define DEFAULT_MAX_ACCELERATION      {9000,9000,100,10000}    // X, Y, Z, E maximum start speed for accelerated moves. E default values are good for skeinforge 40+, for older versions raise them a lot.
+#define DEFAULT_MAX_ACCELERATION      {9000,9000,100,10000}    // X, Y, Z, E maximum start speed for accelerated moves. E default values are good for Skeinforge 40+, for older versions raise them a lot.
 
 #define DEFAULT_ACCELERATION          3000    // X, Y, Z and E max acceleration in mm/s^2 for printing moves
 #define DEFAULT_RETRACT_ACCELERATION  3000   // X, Y, Z and E max acceleration in mm/s^2 for retracts
 //===========================================================================
 
 // EEPROM
-// the microcontroller can store settings in the EEPROM, e.g. max velocity...
-// M500 - stores paramters in EEPROM
+// The microcontroller can store settings in the EEPROM, e.g. max velocity...
+// M500 - stores parameters in EEPROM
 // M501 - reads parameters from EEPROM (if you need reset them after you changed them temporarily).
 // M502 - reverts to the default "factory settings".  You still need to store them in EEPROM afterwards if you want to.
-//define this to enable eeprom support
+//define this to enable EEPROM support
 //#define EEPROM_SETTINGS
 //to disable EEPROM Serial responses and decrease program space by ~1700 byte: comment this out:
 // please keep turned on if you can.
 #define ABS_PREHEAT_FAN_SPEED 255   // Insert Value between 0 and 255
 
 //LCD and SD support
-//#define ULTRA_LCD  //general lcd support, also 16x2
+//#define ULTRA_LCD  //general LCD support, also 16x2
 //#define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
 //#define SDSUPPORT // Enable SD Card Support in Hardware Console
 //#define SDSLOW // Use slower SD transfer mode (not normally needed - uncomment if you're getting volume init error)
 //#define ENCODER_PULSES_PER_STEP 1 // Increase if you have a high resolution encoder
 //#define ENCODER_STEPS_PER_MENU_ITEM 5 // Set according to ENCODER_PULSES_PER_STEP or your liking
-//#define ULTIMAKERCONTROLLER //as available from the ultimaker online store.
-//#define ULTIPANEL  //the ultipanel as on thingiverse
+//#define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
+//#define ULTIPANEL  //the UltiPanel as on Thingiverse
 //#define LCD_FEEDBACK_FREQUENCY_HZ 1000	// this is the tone frequency the buzzer plays when on UI feedback. ie Screen Click
 //#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100 // the duration the buzzer plays the UI feedback sound. ie Screen Click
 
 // https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/schematics#!shiftregister-connection
 //#define SR_LCD
 #ifdef SR_LCD
-   #define SR_LCD_2W_NL    // Non latching 2 wire shiftregister
+   #define SR_LCD_2W_NL    // Non latching 2 wire shift register
    //#define NEWPANEL
 #endif
 
     #define LCD_WIDTH 20
     #define LCD_HEIGHT 4
   #endif
-#else //no panel but just lcd
+#else //no panel but just LCD
   #ifdef ULTRA_LCD
   #ifdef DOGLCD // Change number of lines to match the 128x64 graphics display
     #define LCD_WIDTH 20
 // 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 alle hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
+// 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
 

Marlin/Configuration_adv.h

 #define BED_CHECK_INTERVAL 5000 //ms between checks in bang-bang control
 
 //// Heating sanity check:
-// This waits for the watchperiod in milliseconds whenever an M104 or M109 increases the target temperature
+// This waits for the watch period in milliseconds whenever an M104 or M109 increases the target temperature
 // If the temperature has not increased at the end of that period, the target temperature is set to zero.
 // It can be reset with another M104/M109. This check is also only triggered if the target temperature and the current temperature
 //  differ by at least 2x WATCH_TEMP_INCREASE
 //#define WATCH_TEMP_INCREASE 10  //Heat up at least 10 degree in 20 seconds
 
 #ifdef PIDTEMP
-  // this adds an experimental additional term to the heatingpower, proportional to the extrusion speed.
-  // if Kc is choosen well, the additional required power due to increased melting should be compensated.
+  // this adds an experimental additional term to the heating power, proportional to the extrusion speed.
+  // if Kc is chosen well, the additional required power due to increased melting should be compensated.
   #define PID_ADD_EXTRUSION_RATE
   #ifdef PID_ADD_EXTRUSION_RATE
-    #define  DEFAULT_Kc (1) //heatingpower=Kc*(e_speed)
+    #define  DEFAULT_Kc (1) //heating power=Kc*(e_speed)
   #endif
 #endif
 
 // the target temperature is set to mintemp+factor*se[steps/sec] and limited by mintemp and maxtemp
 // you exit the value by any M109 without F*
 // Also, if the temperature is set to a value <mintemp, it is not changed by autotemp.
-// on an ultimaker, some initial testing worked with M109 S215 B260 F1 in the start.gcode
+// on an Ultimaker, some initial testing worked with M109 S215 B260 F1 in the start.gcode
 #define AUTOTEMP
 #ifdef AUTOTEMP
   #define AUTOTEMP_OLDWEIGHT 0.98
 #define SD_FINISHED_STEPPERRELEASE true  //if sd support and the file is finished: disable steppers?
 #define SD_FINISHED_RELEASECOMMAND "M84 X Y Z E" // You might want to keep the z enabled so your bed stays in place.
 
-#define SDCARD_RATHERRECENTFIRST  //reverse file order of sd card menu display. Its sorted practically after the filesystem block order.
-// if a file is deleted, it frees a block. hence, the order is not purely cronological. To still have auto0.g accessible, there is again the option to do that.
+#define SDCARD_RATHERRECENTFIRST  //reverse file order of sd card menu display. Its sorted practically after the file system block order.
+// if a file is deleted, it frees a block. hence, the order is not purely chronological. To still have auto0.g accessible, there is again the option to do that.
 // using:
 //#define MENU_ADDAUTOSTART
 
-// The hardware watchdog should reset the Microcontroller disabling all outputs, in case the firmware gets stuck and doesn't do temperature regulation.
+// The hardware watchdog should reset the microcontroller disabling all outputs, in case the firmware gets stuck and doesn't do temperature regulation.
 //#define USE_WATCHDOG
 
 #ifdef USE_WATCHDOG
 //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
 // Babystepping enables the user to control the axis in tiny amounts, independently from the normal printing process
-// it can e.g. be used to change z-positions in the print startup phase in realtime
+// it can e.g. be used to change z-positions in the print startup phase in real-time
 // does not respect endstops!
 //#define BABYSTEPPING
 #ifdef BABYSTEPPING
 //
 // advance (steps) = STEPS_PER_CUBIC_MM_E * EXTUDER_ADVANCE_K * cubic mm per second ^ 2
 //
-// hooke's law says:		force = k * distance
-// bernoulli's priniciple says:	v ^ 2 / 2 + g . h + pressure / density = constant
+// Hooke's law says:		force = k * distance
+// Bernoulli's principle says:	v ^ 2 / 2 + g . h + pressure / density = constant
 // so: v ^ 2 is proportional to number of steps we advance the extruder
 //#define ADVANCE
 
 //===========================================================================
 
 // 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 ringbuffering.
+// 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
   #define BLOCK_BUFFER_SIZE 16   // SD,LCD,Buttons take more memory, block buffer needs to be smaller
 #else
 #endif
 
 
-//The ASCII buffer for recieving from the serial:
+//The ASCII buffer for receiving from the serial:
 #define MAX_CMD_SIZE 96
 #define BUFSIZE 4
 
 
-// Firmware based and LCD controled retract
+// Firmware based and LCD controlled retract
 // M207 and M208 can be used to define parameters for the retraction.
 // The retraction can be called by the slicer using G10 and G11
 // until then, intended retractions can be detected by moves that only extrude and the direction.
 // the moves are than replaced by the firmware controlled ones.
 
 // #define FWRETRACT  //ONLY PARTIALLY TESTED
-#define MIN_RETRACT 0.1 //minimum extruded mm to accept a automatic gcode retraction attempt
-
+#ifdef FWRETRACT
+  #define MIN_RETRACT 0.1                //minimum extruded mm to accept a automatic gcode retraction attempt
+  #define RETRACT_LENGTH 3               //default retract length (positive mm)
+  #define RETRACT_FEEDRATE 80*60         //default feedrate for retracting
+  #define RETRACT_ZLIFT 0                //default retract Z-lift
+  #define RETRACT_RECOVER_LENGTH 0       //default additional recover length (mm, added to retract length when recovering)
+  #define RETRACT_RECOVER_FEEDRATE 8*60  //default feedrate for recovering from retraction
+#endif
 
 //adds support for experimental filament exchange support M600; requires display
 #ifdef ULTIPANEL

Marlin/LiquidCrystalRus.cpp

   #include "WProgram.h"
 #endif
 
-// it is a russian alphabet translation
+// it is a Russian alphabet translation
 // except 0401 --> 0xa2 = ╗, 0451 --> 0xb5
 const PROGMEM uint8_t utf_recode[] = 
        { 0x41,0xa0,0x42,0xa1,0xe0,0x45,0xa3,0xa4,0xa5,0xa6,0x4b,0xa7,0x4d,0x48,0x4f,
 
   // SEE PAGE 45/46 FOR INITIALIZATION SPECIFICATION!
   // according to datasheet, we need at least 40ms after power rises above 2.7V
-  // before sending commands. Arduino can turn on way befer 4.5V so we'll wait 50
+  // before sending commands. Arduino can turn on way before 4.5V so we'll wait 50
   delayMicroseconds(50000); 
   // Now we pull both RS and R/W low to begin commands
   digitalWrite(_rs_pin, LOW);
   
   //put the LCD into 4 bit or 8 bit mode
   if (! (_displayfunction & LCD_8BITMODE)) {
-    // this is according to the hitachi HD44780 datasheet
+    // this is according to the Hitachi HD44780 datasheet
     // figure 24, pg 46
 
     // we start in 8bit mode, try to set 4 bit mode
     // finally, set to 8-bit interface
     writeNbits(0x02,4); 
   } else {
-    // this is according to the hitachi HD44780 datasheet
+    // this is according to the Hitachi HD44780 datasheet
     // page 45 figure 23
 
     // Send function set command sequence
     }    
   } else send(out_char, HIGH);
 #if defined(ARDUINO) && ARDUINO >= 100
-  return 1; // assume sucess 
+  return 1; // assume success 
 #endif
 }
 

Marlin/Makefile

 VPATH += $(HARDWARE_DIR)/libraries/Wire/utility
 VPATH += $(HARDWARE_DIR)/libraries/LiquidTWI2
 endif
-ifeq ($(WIRE, 1)
+ifeq ($(WIRE), 1)
 VPATH += $(HARDWARE_DIR)/libraries/Wire
 VPATH += $(HARDWARE_DIR)/libraries/Wire/utility
 endif
 	MarlinSerial.cpp Sd2Card.cpp SdBaseFile.cpp SdFatUtil.cpp	\
 	SdFile.cpp SdVolume.cpp motion_control.cpp planner.cpp		\
 	stepper.cpp temperature.cpp cardreader.cpp ConfigurationStore.cpp \
-	watchdog.cpp SPI.cpp Servo.cpp Tone.cpp ultralcd.cpp digipot_mcp4451.cpp
+	watchdog.cpp SPI.cpp Servo.cpp Tone.cpp ultralcd.cpp digipot_mcp4451.cpp \
+	vector_3.cpp qr_solve.cpp
 ifeq ($(LIQUID_TWI2), 0)
 CXXSRC += LiquidCrystal.cpp
 else

Marlin/Marlin.h

 void prepare_arc_move(char isclockwise);
 void clamp_to_software_endstops(float target[3]);
 
+void refresh_cmd_timeout(void);
+
 #ifdef FAST_PWM_FAN
 void setPwmFrequency(uint8_t pin, int val);
 #endif

Marlin/MarlinSerial.cpp

 
 #ifndef AT90USB
 // this next line disables the entire HardwareSerial.cpp, 
-// this is so I can support Attiny series and any other chip without a uart
+// this is so I can support Attiny series and any other chip without a UART
 #if defined(UBRRH) || defined(UBRR0H) || defined(UBRR1H) || defined(UBRR2H) || defined(UBRR3H)
 
 #if UART_PRESENT(SERIAL_PORT)
   bool useU2X = true;
 
 #if F_CPU == 16000000UL && SERIAL_PORT == 0
-  // hardcoded exception for compatibility with the bootloader shipped
+  // hard coded exception for compatibility with the bootloader shipped
   // with the Duemilanove and previous boards and the firmware on the 8U2
   // on the Uno and Mega 2560.
   if (baud == 57600) {

Marlin/Marlin_main.cpp

 // G10 - retract filament according to settings of M207
 // G11 - retract recover filament according to settings of M208
 // G28 - Home all Axis
-// G29 - Detailed Z-Probe, probes the bed at 3 points.  You must de at the home position for this to work correctly.
+// G29 - Detailed Z-Probe, probes the bed at 3 or more points.  Will fail if you haven't homed yet.
 // G30 - Single Z Probe, probes bed at current XY location.
 // G90 - Use Absolute Coordinates
 // G91 - Use Relative Coordinates
 // M204 - Set default acceleration: S normal moves T filament only moves (M204 S3000 T7000) im mm/sec^2  also sets minimum segment time in ms (B20000) to prevent buffer underruns and M20 minimum feedrate
 // M205 -  advanced settings:  minimum travel speed S=while printing T=travel only,  B=minimum segment time X= maximum xy jerk, Z=maximum Z jerk, E=maximum E jerk
 // M206 - set additional homeing offset
-// M207 - set retract length S[positive mm] F[feedrate mm/sec] Z[additional zlift/hop]
-// M208 - set recover=unretract length S[positive mm surplus to the M207 S*] F[feedrate mm/sec]
+// M207 - set retract length S[positive mm] F[feedrate mm/min] Z[additional zlift/hop], stays in mm regardless of M200 setting
+// M208 - set recover=unretract length S[positive mm surplus to the M207 S*] F[feedrate mm/min]
 // M209 - S<1=true/0=false> enable automatic retract detect if the slicer did not support G10/11: every normal extrude-only move will be classified as retract depending on the direction.
 // M218 - set hotend offset (in mm): T<extruder_number> X<offset_on_X> Y<offset_on_Y>
 // M220 S<factor in percent>- set speed factor override percentage
 #endif
 
 #ifdef FWRETRACT
-  bool autoretract_enabled=true;
+  bool autoretract_enabled=false;
   bool retracted=false;
-  float retract_length=3, retract_feedrate=17*60, retract_zlift=0.8;
-  float retract_recover_length=0, retract_recover_feedrate=8*60;
+  float retract_length = RETRACT_LENGTH;
+  float retract_feedrate = RETRACT_FEEDRATE;
+  float retract_zlift = RETRACT_ZLIFT;
+  float retract_recover_length = RETRACT_RECOVER_LENGTH;
+  float retract_recover_feedrate = RETRACT_RECOVER_FEEDRATE;
 #endif
 
 #ifdef ULTIPANEL
     #endif
 }
 
+/// Probe bed height at position (x,y), returns the measured z value
+static float probe_pt(float x, float y, float z_before) {
+  // 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]);
+
+  engage_z_probe();   // Engage Z Servo endstop if available
+  run_z_probe();
+  float measured_z = current_position[Z_AXIS];
+  retract_z_probe();
+
+  SERIAL_PROTOCOLPGM(MSG_BED);
+  SERIAL_PROTOCOLPGM(" x: ");
+  SERIAL_PROTOCOL(x);
+  SERIAL_PROTOCOLPGM(" y: ");
+  SERIAL_PROTOCOL(y);
+  SERIAL_PROTOCOLPGM(" z: ");
+  SERIAL_PROTOCOL(measured_z);
+  SERIAL_PROTOCOLPGM("\n");
+  return measured_z;
+}
+
 #endif // #ifdef ENABLE_AUTO_BED_LEVELING
 
 static void homeaxis(int axis) {
   }
 }
 #define HOMEAXIS(LETTER) homeaxis(LETTER##_AXIS)
+void refresh_cmd_timeout(void)
+{
+  previous_millis_cmd = millis();
+}
+
+#ifdef FWRETRACT
+  void retract(bool retracting) {
+    if(retracting && !retracted) {
+      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];
+      current_position[E_AXIS]+=retract_length/volumetric_multiplier[active_extruder];
+      plan_set_e_position(current_position[E_AXIS]);
+      float oldFeedrate = feedrate;
+      feedrate=retract_feedrate;
+      retracted=true;
+      prepare_move();
+      current_position[Z_AXIS]-=retract_zlift;
+      plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]);
+      prepare_move();
+      feedrate = oldFeedrate;
+    } else if(!retracting && retracted) {
+      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];
+      current_position[Z_AXIS]+=retract_zlift;
+      plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]);
+      //prepare_move();
+      current_position[E_AXIS]-=(retract_length+retract_recover_length)/volumetric_multiplier[active_extruder]; 
+      plan_set_e_position(current_position[E_AXIS]);
+      float oldFeedrate = feedrate;
+      feedrate=retract_recover_feedrate;
+      retracted=false;
+      prepare_move();
+      feedrate = oldFeedrate;
+    }
+  } //retract
+#endif //FWRETRACT
 
 void process_commands()
 {
     case 1: // G1
       if(Stopped == false) {
         get_coordinates(); // For X Y Z E F
+          #ifdef FWRETRACT
+            if(autoretract_enabled)
+            if( !(code_seen(X_AXIS) || code_seen(Y_AXIS) || code_seen(Z_AXIS)) && code_seen(E_AXIS)) {
+              float echange=destination[E_AXIS]-current_position[E_AXIS];
+              if((echange<-MIN_RETRACT && !retracted) || (echange>MIN_RETRACT && retracted)) { //move appears to be an attempt to attract or recover
+                  current_position[E_AXIS] = destination[E_AXIS]; //hide the slicer-generated retract/recover from calculations
+                  plan_set_e_position(current_position[E_AXIS]); //AND from the planner
+                  retract(!retracted);
+                  return;
+              }
+            }
+          #endif //FWRETRACT
         prepare_move();
         //ClearToSend();
         return;
       break;
       #ifdef FWRETRACT
       case 10: // G10 retract
-      if(!retracted)
-      {
-        destination[X_AXIS]=current_position[X_AXIS];
-        destination[Y_AXIS]=current_position[Y_AXIS];
-        destination[Z_AXIS]=current_position[Z_AXIS];
-        current_position[Z_AXIS]+=-retract_zlift;
-        destination[E_AXIS]=current_position[E_AXIS]-retract_length;
-        feedrate=retract_feedrate;
-        retracted=true;
-        prepare_move();
-      }
-
+        retract(true);
       break;
       case 11: // G11 retract_recover
-      if(retracted)
-      {
-        destination[X_AXIS]=current_position[X_AXIS];
-        destination[Y_AXIS]=current_position[Y_AXIS];
-        destination[Z_AXIS]=current_position[Z_AXIS];
-        current_position[Z_AXIS]+=retract_zlift;
-        destination[E_AXIS]=current_position[E_AXIS]+retract_length+retract_recover_length;
-        feedrate=retract_recover_feedrate;
-        retracted=false;
-        prepare_move();
-      }
+        retract(false);
       break;
       #endif //FWRETRACT
     case 28: //G28 Home all Axis one at a time
 
 #else // NOT DELTA
 
-      home_all_axis = !((code_seen(axis_codes[0])) || (code_seen(axis_codes[1])) || (code_seen(axis_codes[2])));
+      home_all_axis = !((code_seen(axis_codes[X_AXIS])) || (code_seen(axis_codes[Y_AXIS])) || (code_seen(axis_codes[Z_AXIS])));
 
       #if Z_HOME_DIR > 0                      // If homing away from BED do Z first
       if((home_all_axis) || (code_seen(axis_codes[Z_AXIS]))) {
             #error "You must have a Z_MIN endstop in order to enable Auto Bed Leveling feature!!! Z_MIN_PIN must point to a valid hardware pin."
             #endif
 
+            // Prevent user from running a G29 without first homing in X and Y
+            if (! (axis_known_position[X_AXIS] && axis_known_position[Y_AXIS]) )
+            {
+                LCD_MESSAGEPGM(MSG_POSITION_UNKNOWN);
+                SERIAL_ECHO_START;
+                SERIAL_ECHOLNPGM(MSG_POSITION_UNKNOWN);
+                break; // abort G29, since we don't know where we are
+            }
+
             st_synchronize();
             // make sure the bed_level_rotation_matrix is identity or the planner will get it incorectly
             //vector_3 corrected_position = plan_get_position_mm();
 
               for (int xCount=0; xCount < ACCURATE_BED_LEVELING_POINTS; xCount++)
               {
+                float z_before;
                 if (probePointCounter == 0)
                 {
                   // raise before probing
-                  do_blocking_move_to(current_position[X_AXIS], current_position[Y_AXIS], Z_RAISE_BEFORE_PROBING);
+                  z_before = Z_RAISE_BEFORE_PROBING;
                 } else
                 {
                   // raise extruder
-                  do_blocking_move_to(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS);
+                  z_before = current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS;
                 }
 
+                float measured_z = probe_pt(xProbe, yProbe, z_before);
 
-                do_blocking_move_to(xProbe - X_PROBE_OFFSET_FROM_EXTRUDER, yProbe - Y_PROBE_OFFSET_FROM_EXTRUDER, current_position[Z_AXIS]);
-
-                engage_z_probe();   // Engage Z Servo endstop if available
-                run_z_probe();
-                eqnBVector[probePointCounter] = current_position[Z_AXIS];
-                retract_z_probe();
-
-                SERIAL_PROTOCOLPGM("Bed x: ");
-                SERIAL_PROTOCOL(xProbe);
-                SERIAL_PROTOCOLPGM(" y: ");
-                SERIAL_PROTOCOL(yProbe);
-                SERIAL_PROTOCOLPGM(" z: ");
-                SERIAL_PROTOCOL(current_position[Z_AXIS]);
-                SERIAL_PROTOCOLPGM("\n");
+                eqnBVector[probePointCounter] = measured_z;
 
                 eqnAMatrix[probePointCounter + 0*ACCURATE_BED_LEVELING_POINTS*ACCURATE_BED_LEVELING_POINTS] = xProbe;
                 eqnAMatrix[probePointCounter + 1*ACCURATE_BED_LEVELING_POINTS*ACCURATE_BED_LEVELING_POINTS] = yProbe;
 
 
             // prob 1
-            do_blocking_move_to(current_position[X_AXIS], current_position[Y_AXIS], Z_RAISE_BEFORE_PROBING);
-            do_blocking_move_to(LEFT_PROBE_BED_POSITION - X_PROBE_OFFSET_FROM_EXTRUDER, BACK_PROBE_BED_POSITION - Y_PROBE_OFFSET_FROM_EXTRUDER, current_position[Z_AXIS]);
-
-            engage_z_probe();   // Engage Z Servo endstop if available
-            run_z_probe();
-            float z_at_xLeft_yBack = current_position[Z_AXIS];
-            retract_z_probe();
-
-            SERIAL_PROTOCOLPGM("Bed x: ");
-            SERIAL_PROTOCOL(LEFT_PROBE_BED_POSITION);
-            SERIAL_PROTOCOLPGM(" y: ");
-            SERIAL_PROTOCOL(BACK_PROBE_BED_POSITION);
-            SERIAL_PROTOCOLPGM(" z: ");
-            SERIAL_PROTOCOL(current_position[Z_AXIS]);
-            SERIAL_PROTOCOLPGM("\n");
+            float z_at_xLeft_yBack = probe_pt(LEFT_PROBE_BED_POSITION, BACK_PROBE_BED_POSITION, Z_RAISE_BEFORE_PROBING);
 
             // prob 2
-            do_blocking_move_to(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS);
-            do_blocking_move_to(LEFT_PROBE_BED_POSITION - X_PROBE_OFFSET_FROM_EXTRUDER, FRONT_PROBE_BED_POSITION - Y_PROBE_OFFSET_FROM_EXTRUDER, current_position[Z_AXIS]);
-
-            engage_z_probe();   // Engage Z Servo endstop if available
-            run_z_probe();
-            float z_at_xLeft_yFront = current_position[Z_AXIS];
-            retract_z_probe();
-
-            SERIAL_PROTOCOLPGM("Bed x: ");
-            SERIAL_PROTOCOL(LEFT_PROBE_BED_POSITION);
-            SERIAL_PROTOCOLPGM(" y: ");
-            SERIAL_PROTOCOL(FRONT_PROBE_BED_POSITION);
-            SERIAL_PROTOCOLPGM(" z: ");
-            SERIAL_PROTOCOL(current_position[Z_AXIS]);
-            SERIAL_PROTOCOLPGM("\n");
+            float z_at_xLeft_yFront = probe_pt(LEFT_PROBE_BED_POSITION, FRONT_PROBE_BED_POSITION, current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS);
 
             // prob 3
-            do_blocking_move_to(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS);
-            // the current position will be updated by the blocking move so the head will not lower on this next call.
-            do_blocking_move_to(RIGHT_PROBE_BED_POSITION - X_PROBE_OFFSET_FROM_EXTRUDER, FRONT_PROBE_BED_POSITION - Y_PROBE_OFFSET_FROM_EXTRUDER, current_position[Z_AXIS]);
-
-            engage_z_probe();   // Engage Z Servo endstop if available
-            run_z_probe();
-            float z_at_xRight_yFront = current_position[Z_AXIS];
-            retract_z_probe(); // Retract Z Servo endstop if available
-
-            SERIAL_PROTOCOLPGM("Bed x: ");
-            SERIAL_PROTOCOL(RIGHT_PROBE_BED_POSITION);
-            SERIAL_PROTOCOLPGM(" y: ");
-            SERIAL_PROTOCOL(FRONT_PROBE_BED_POSITION);
-            SERIAL_PROTOCOLPGM(" z: ");
-            SERIAL_PROTOCOL(current_position[Z_AXIS]);
-            SERIAL_PROTOCOLPGM("\n");
+            float z_at_xRight_yFront = probe_pt(RIGHT_PROBE_BED_POSITION, FRONT_PROBE_BED_POSITION, current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS);
 
             clean_up_after_endstop_move();
 
             feedrate = homing_feedrate[Z_AXIS];
 
             run_z_probe();
-            SERIAL_PROTOCOLPGM("Bed Position X: ");
+            SERIAL_PROTOCOLPGM(MSG_BED);
+            SERIAL_PROTOCOLPGM(" X: ");
             SERIAL_PROTOCOL(current_position[X_AXIS]);
             SERIAL_PROTOCOLPGM(" Y: ");
             SERIAL_PROTOCOL(current_position[Y_AXIS]);
       }
       else
       {
-        bool all_axis = !((code_seen(axis_codes[0])) || (code_seen(axis_codes[1])) || (code_seen(axis_codes[2]))|| (code_seen(axis_codes[3])));
+        bool all_axis = !((code_seen(axis_codes[X_AXIS])) || (code_seen(axis_codes[Y_AXIS])) || (code_seen(axis_codes[Z_AXIS]))|| (code_seen(axis_codes[E_AXIS])));
         if(all_axis)
         {
           st_synchronize();
     case 114: // M114
       SERIAL_PROTOCOLPGM("X:");
       SERIAL_PROTOCOL(current_position[X_AXIS]);
-      SERIAL_PROTOCOLPGM("Y:");
+      SERIAL_PROTOCOLPGM(" Y:");
       SERIAL_PROTOCOL(current_position[Y_AXIS]);
-      SERIAL_PROTOCOLPGM("Z:");
+      SERIAL_PROTOCOLPGM(" Z:");
       SERIAL_PROTOCOL(current_position[Z_AXIS]);
-      SERIAL_PROTOCOLPGM("E:");
+      SERIAL_PROTOCOLPGM(" E:");
       SERIAL_PROTOCOL(current_position[E_AXIS]);
 
       SERIAL_PROTOCOLPGM(MSG_COUNT_X);
       SERIAL_PROTOCOL(float(st_get_position(X_AXIS))/axis_steps_per_unit[X_AXIS]);
-      SERIAL_PROTOCOLPGM("Y:");
+      SERIAL_PROTOCOLPGM(" Y:");
       SERIAL_PROTOCOL(float(st_get_position(Y_AXIS))/axis_steps_per_unit[Y_AXIS]);
-      SERIAL_PROTOCOLPGM("Z:");
+      SERIAL_PROTOCOLPGM(" Z:");
       SERIAL_PROTOCOL(float(st_get_position(Z_AXIS))/axis_steps_per_unit[Z_AXIS]);
 
       SERIAL_PROTOCOLLN("");
     next_feedrate = code_value();
     if(next_feedrate > 0.0) feedrate = next_feedrate;
   }
-  #ifdef FWRETRACT
-  if(autoretract_enabled)
-  if( !(seen[X_AXIS] || seen[Y_AXIS] || seen[Z_AXIS]) && seen[E_AXIS])
-  {
-    float echange=destination[E_AXIS]-current_position[E_AXIS];
-    if(echange<-MIN_RETRACT) //retract
-    {
-      if(!retracted)
-      {
-
-      destination[Z_AXIS]+=retract_zlift; //not sure why chaninging current_position negatively does not work.
-      //if slicer retracted by echange=-1mm and you want to retract 3mm, corrrectede=-2mm additionally
-      float correctede=-echange-retract_length;
-      //to generate the additional steps, not the destination is changed, but inversely the current position
-      current_position[E_AXIS]+=-correctede;
-      feedrate=retract_feedrate;
-      retracted=true;
-      }
-
-    }
-    else
-      if(echange>MIN_RETRACT) //retract_recover
-    {
-      if(retracted)
-      {
-      //current_position[Z_AXIS]+=-retract_zlift;
-      //if slicer retracted_recovered by echange=+1mm and you want to retract_recover 3mm, corrrectede=2mm additionally
-      float correctede=-echange+1*retract_length+retract_recover_length; //total unretract=retract_length+retract_recover_length[surplus]
-      current_position[E_AXIS]+=correctede; //to generate the additional steps, not the destination is changed, but inversely the current position
-      feedrate=retract_recover_feedrate;
-      retracted=false;
-      }
-    }
-
-  }
-  #endif //FWRETRACT
 }
 
 void get_arc_coordinates()

Marlin/cardreader.cpp

    file_subcall_ctr=0;
    memset(workDirParents, 0, sizeof(workDirParents));
 
-   autostart_stilltocheck=true; //the sd start is delayed, because otherwise the serial cannot answer fast enought to make contact with the hostsoftware.
+   autostart_stilltocheck=true; //the SD start is delayed, because otherwise the serial cannot answer fast enough to make contact with the host software.
    lastnr=0;
   //power to SD reader
   #if SDPOWER > -1
 {
   if(!cardOK)
     return;
-  if(file.isOpen())  //replaceing current file by new file, or subfile call
+  if(file.isOpen())  //replacing current file by new file, or subfile call
   {
     if(!replace_current)
     {
   
   if(store_location)
   {
-    //future: store printer state, filename and position for continueing a stoped print
+    //future: store printer state, filename and position for continuing a stopped print
     // so one can unplug the printer and continue printing the next day.
     
   }

Marlin/pins.h

 #define SDSS               53
 #define LED_PIN            8
 #define FAN_PIN            7
-#define PS_ON_PIN          12
+#define PS_ON_PIN          -1
 #define KILL_PIN           -1
 #define SUICIDE_PIN        -1  //PIN that has to be turned on right after start, to keep power flowing.
 #define SAFETY_TRIGGERED_PIN     28 //PIN to detect the safety circuit has triggered

Marlin/thermistortables.h

 };
 #endif
 
+// Pt1000 and Pt100 handling
+// 
+// Rt=R0*(1+a*T+b*T*T) [for T>0]
+// a=3.9083E-3, b=-5.775E-7
+
+#define PtA 3.9083E-3
+#define PtB -5.775E-7
+#define PtRt(T,R0) ((R0)*(1.0+(PtA)*(T)+(PtB)*(T)*(T)))
+#define PtAdVal(T,R0,Rup) (short)(1024/(Rup/PtRt(T,R0)+1))
+#define PtLine(T,R0,Rup) { PtAdVal(T,R0,Rup)*OVERSAMPLENR, T },
+
+#if (THERMISTORHEATER_0 == 110) || (THERMISTORHEATER_1 == 110) || (THERMISTORHEATER_2 == 110) || (THERMISTORBED == 110) // Pt100 with 1k0 pullup
+const short temptable_110[][2] PROGMEM = {
+// only few values are needed as the curve is very flat  
+  PtLine(0,100,1000)
+  PtLine(50,100,1000)
+  PtLine(100,100,1000)
+  PtLine(150,100,1000)
+  PtLine(200,100,1000)
+  PtLine(250,100,1000)
+  PtLine(300,100,1000)
+};
+#endif
+#if (THERMISTORHEATER_0 == 147) || (THERMISTORHEATER_1 == 147) || (THERMISTORHEATER_2 == 147) || (THERMISTORBED == 147) // Pt100 with 4k7 pullup
+const short temptable_147[][2] PROGMEM = {
+// only few values are needed as the curve is very flat  
+  PtLine(0,100,4700)
+  PtLine(50,100,4700)
+  PtLine(100,100,4700)
+  PtLine(150,100,4700)
+  PtLine(200,100,4700)
+  PtLine(250,100,4700)
+  PtLine(300,100,4700)
+};
+#endif
+#if (THERMISTORHEATER_0 == 1010) || (THERMISTORHEATER_1 == 1010) || (THERMISTORHEATER_2 == 1010) || (THERMISTORBED == 1010) // Pt1000 with 1k0 pullup
+const short temptable_1010[][2] PROGMEM = {
+  PtLine(0,1000,1000)
+  PtLine(25,1000,1000)
+  PtLine(50,1000,1000)
+  PtLine(75,1000,1000)
+  PtLine(100,1000,1000)
+  PtLine(125,1000,1000)
+  PtLine(150,1000,1000)
+  PtLine(175,1000,1000)
+  PtLine(200,1000,1000)
+  PtLine(225,1000,1000)
+  PtLine(250,1000,1000)
+  PtLine(275,1000,1000)
+  PtLine(300,1000,1000)
+};
+#endif
+#if (THERMISTORHEATER_0 == 1047) || (THERMISTORHEATER_1 == 1047) || (THERMISTORHEATER_2 == 1047) || (THERMISTORBED == 1047) // Pt1000 with 4k7 pullup
+const short temptable_1047[][2] PROGMEM = {
+// only few values are needed as the curve is very flat  
+  PtLine(0,1000,4700)
+  PtLine(50,1000,4700)
+  PtLine(100,1000,4700)
+  PtLine(150,1000,4700)
+  PtLine(200,1000,4700)
+  PtLine(250,1000,4700)
+  PtLine(300,1000,4700)
+};
+#endif
 
 #define _TT_NAME(_N) temptable_ ## _N
 #define TT_NAME(_N) _TT_NAME(_N)

Marlin/ultralcd.cpp

 {
     if (encoderPosition != 0)
     {
+        refresh_cmd_timeout();
         current_position[X_AXIS] += float((int)encoderPosition) * move_menu_scale;
         if (min_software_endstops && current_position[X_AXIS] < X_MIN_POS)
             current_position[X_AXIS] = X_MIN_POS;
 {
     if (encoderPosition != 0)
     {
+        refresh_cmd_timeout();
         current_position[Y_AXIS] += float((int)encoderPosition) * move_menu_scale;
         if (min_software_endstops && current_position[Y_AXIS] < Y_MIN_POS)
             current_position[Y_AXIS] = Y_MIN_POS;
 {
     if (encoderPosition != 0)
     {
+        refresh_cmd_timeout();
         current_position[Z_AXIS] += float((int)encoderPosition) * move_menu_scale;
         if (min_software_endstops && current_position[Z_AXIS] < Z_MIN_POS)
             current_position[Z_AXIS] = Z_MIN_POS;
 static void lcd_control_motion_menu()
 {
     START_MENU();
-    MENU_ITEM(back, MSG_CONTROL, lcd_control_menu);
-    MENU_ITEM_EDIT(float32, MSG_ZPROBE_ZOFFSET, &zprobe_zoffset, 0.5, 50);
+    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);
+#endif
     MENU_ITEM_EDIT(float5, MSG_ACC, &acceleration, 500, 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);

Marlin/ultralcd_implementation_hitachi_HD44780.h

 	#endif
 #elif defined(BEEPER) && BEEPER > -1
     SET_OUTPUT(BEEPER);
+	#if !defined(LCD_FEEDBACK_FREQUENCY_HZ) || !defined(LCD_FEEDBACK_FREQUENCY_DURATION_MS)
     for(int8_t i=0;i<10;i++)
     {
       WRITE(BEEPER,HIGH);
       delayMicroseconds(100);
       WRITE(BEEPER,LOW);
       delayMicroseconds(100);
-    }
+    }
+    #else
+    for(int8_t i=0;i<(LCD_FEEDBACK_FREQUENCY_DURATION_MS / (1000 / LCD_FEEDBACK_FREQUENCY_HZ));i++)
+    {
+      WRITE(BEEPER,HIGH);
+      delayMicroseconds(1000000 / LCD_FEEDBACK_FREQUENCY_HZ / 2);
+      WRITE(BEEPER,LOW);
+      delayMicroseconds(1000000 / LCD_FEEDBACK_FREQUENCY_HZ / 2);
+    }
+    #endif
 #endif
 }
 

Marlin/ultralcd_st7920_u8glib_rrd.h

 #define ST7920_DAT_PIN  LCD_PINS_ENABLE
 #define ST7920_CS_PIN   LCD_PINS_RS
 
-//#define PAGE_HEIGHT 8   //128 byte frambuffer
-//#define PAGE_HEIGHT 16  //256 byte frambuffer
+//#define PAGE_HEIGHT 8   //128 byte framebuffer
+//#define PAGE_HEIGHT 16  //256 byte framebuffer
 #define PAGE_HEIGHT 32  //512 byte framebuffer
 
 #define WIDTH 128
         ST7920_SET_CMD();
         ST7920_WRITE_BYTE(0x08);       //display off, cursor+blink off
         ST7920_WRITE_BYTE(0x01);       //clear CGRAM ram
-        u8g_Delay(10);                 //delay for cgram clear
-        ST7920_WRITE_BYTE(0x3E);       //extended mode + gdram active
+        u8g_Delay(10);                 //delay for CGRAM clear
+        ST7920_WRITE_BYTE(0x3E);       //extended mode + GDRAM active
         for(y=0;y<HEIGHT/2;y++)        //clear GDRAM
         {
           ST7920_WRITE_BYTE(0x80|y);   //set y

Marlin/vector_3.cpp

 #ifdef ENABLE_AUTO_BED_LEVELING
 #include "vector_3.h"
 
-vector_3::vector_3()
-{
-  this->x = 0;
-  this->y = 0;
-  this->z = 0;
-}
+vector_3::vector_3() : x(0), y(0), z(0) { }
 
-vector_3::vector_3(float x, float y, float z)
-{
-	this->x = x;
-	this->y = y;
-	this->z = z;
-}
+vector_3::vector_3(float x_, float y_, float z_) : x(x_), y(y_), z(z_) { }
 
 vector_3 vector_3::cross(vector_3 left, vector_3 right)
 {
 
 float vector_3::get_length() 
 {
-        float length = sqrt((x * x) + (y * y) + (z * z));
+	float length = sqrt((x * x) + (y * y) + (z * z));
 	return length;
 }
  

Marlin/watchdog.h

 #include "Marlin.h"
 
 #ifdef USE_WATCHDOG
-  // intialise watch dog with a 1 sec interrupt time
+  // initialize watch dog with a 1 sec interrupt time
   void watchdog_init();
-  // pad the dog/reset watchdog. MUST be called at least every second after the first watchdog_init or avr will go into emergency procedures..
+  // pad the dog/reset watchdog. MUST be called at least every second after the first watchdog_init or AVR will go into emergency procedures..
   void watchdog_reset();
 #else
   //If we do not have a watchdog, then we can have empty functions which are optimized away.