Merge pull request #6240 from thinkyhead/rebuild_rgb_led

Extend RGB LED with Printer Events

Marlin/Conditionals_LCD.h

   #endif
 
   #define HAS_SOFTWARE_ENDSTOPS (ENABLED(MIN_SOFTWARE_ENDSTOPS) || ENABLED(MAX_SOFTWARE_ENDSTOPS))
+  #define HAS_RESUME_CONTINUE (ENABLED(NEWPANEL) || ENABLED(EMERGENCY_PARSER))
+  #define HAS_COLOR_LEDS (ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED))
 
 #endif //CONDITIONALS_LCD_H

Marlin/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/Marlin.h

 extern bool axis_homed[XYZ]; // axis[n].is_homed
 extern volatile bool wait_for_heatup;
 
-#if ENABLED(EMERGENCY_PARSER) || ENABLED(ULTIPANEL)
+#if HAS_RESUME_CONTINUE
   extern volatile bool wait_for_user;
 #endif
 

Marlin/Marlin_main.cpp

 volatile bool wait_for_heatup = true;
 
 // For M0/M1, this flag may be cleared (by M108) to exit the wait-for-user loop
-#if ENABLED(EMERGENCY_PARSER) || ENABLED(ULTIPANEL)
+#if HAS_RESUME_CONTINUE
   volatile bool wait_for_user = false;
 #endif
 
 
 #endif
 
+#if HAS_COLOR_LEDS
+
+  void set_led_color(
+    const uint8_t r, const uint8_t g, const uint8_t b
+      #if ENABLED(RGBW_LED)
+        , const uint8_t w=0
+      #endif
+  ) {
+
+    #if ENABLED(BLINKM)
+
+      // This variant uses i2c to send the RGB components to the device.
+      SendColors(r, g, b);
+
+    #else
+
+      // This variant uses 3 separate pins for the RGB components.
+      // If the pins can do PWM then their intensity will be set.
+      digitalWrite(RGB_LED_R_PIN, r ? HIGH : LOW);
+      digitalWrite(RGB_LED_G_PIN, g ? HIGH : LOW);
+      digitalWrite(RGB_LED_B_PIN, b ? HIGH : LOW);
+      analogWrite(RGB_LED_R_PIN, r);
+      analogWrite(RGB_LED_G_PIN, g);
+      analogWrite(RGB_LED_B_PIN, b);
+
+      #if ENABLED(RGBW_LED)
+        digitalWrite(RGB_LED_W_PIN, w ? HIGH : LOW);
+        analogWrite(RGB_LED_W_PIN, w);
+      #endif
+
+    #endif
+  }
+
+#endif // HAS_COLOR_LEDS
+
 void gcode_line_error(const char* err, bool doFlush = true) {
   SERIAL_ERROR_START;
   serialprintPGM(err);
         if (card_eof) {
           SERIAL_PROTOCOLLNPGM(MSG_FILE_PRINTED);
           card.printingHasFinished();
+          #if ENABLED(PRINTER_EVENT_LEDS)
+            LCD_MESSAGEPGM(MSG_INFO_COMPLETED_PRINTS);
+            set_led_color(0, 255, 0); // Green
+            #if HAS_RESUME_CONTINUE
+              KEEPALIVE_STATE(PAUSED_FOR_USER);
+              wait_for_user = true;
+              while (wait_for_user) idle();
+              KEEPALIVE_STATE(IN_HANDLER);
+            #else
+              safe_delay(1000);
+            #endif
+            set_led_color(0, 0, 0);   // OFF
+          #endif
           card.checkautostart(true);
         }
         else if (n == -1) {
   report_current_position();
 }
 
-#if ENABLED(EMERGENCY_PARSER) || ENABLED(ULTIPANEL)
+#if HAS_RESUME_CONTINUE
 
   /**
    * M0: Unconditional stop - Wait for user button press on LCD
           pin_state[pin - first_pin] = digitalRead(pin);
       }
 
-      #if ENABLED(EMERGENCY_PARSER) || ENABLED(ULTIPANEL)
+      #if HAS_RESUME_CONTINUE
         wait_for_user = true;
       #endif
 
           }
         }
 
-        #if ENABLED(EMERGENCY_PARSER) || ENABLED(ULTIPANEL)
+        #if HAS_RESUME_CONTINUE
           if (!wait_for_user) break;
         #endif
 
             // If we have gone out too far, we can do a simple fix and scale the numbers
             // back in closer to the origin.
             while (HYPOT(X_current, Y_current) > DELTA_PROBEABLE_RADIUS) {
-              X_current /= 1.25;
-              Y_current /= 1.25;
+              X_current *= 0.8;
+              Y_current *= 0.8;
               if (verbose_level > 3) {
                 SERIAL_ECHOPAIR("Pulling point towards center:", X_current);
                 SERIAL_ECHOLNPAIR(", ", Y_current);
     #define TEMP_CONDITIONS (wants_to_cool ? thermalManager.isCoolingHotend(target_extruder) : thermalManager.isHeatingHotend(target_extruder))
   #endif
 
-  float theTarget = -1.0, old_temp = 9999.0;
+  float target_temp = -1.0, old_temp = 9999.0;
   bool wants_to_cool = false;
   wait_for_heatup = true;
   millis_t now, next_temp_ms = 0, next_cool_check_ms = 0;
 
   KEEPALIVE_STATE(NOT_BUSY);
 
+  #if ENABLED(PRINTER_EVENT_LEDS)
+    const float start_temp = thermalManager.degHotend(target_extruder);
+    uint8_t old_blue = 0;
+  #endif
+
   do {
     // Target temperature might be changed during the loop
-    if (theTarget != thermalManager.degTargetHotend(target_extruder)) {
+    if (target_temp != thermalManager.degTargetHotend(target_extruder)) {
       wants_to_cool = thermalManager.isCoolingHotend(target_extruder);
-      theTarget = thermalManager.degTargetHotend(target_extruder);
+      target_temp = thermalManager.degTargetHotend(target_extruder);
 
       // Exit if S<lower>, continue if S<higher>, R<lower>, or R<higher>
       if (no_wait_for_cooling && wants_to_cool) break;
     idle();
     refresh_cmd_timeout(); // to prevent stepper_inactive_time from running out
 
-    float temp = thermalManager.degHotend(target_extruder);
+    const float temp = thermalManager.degHotend(target_extruder);
+
+    #if ENABLED(PRINTER_EVENT_LEDS)
+      // Gradually change LED strip from violet to red as nozzle heats up
+      if (!wants_to_cool) {
+        const uint8_t blue = map(constrain(temp, start_temp, target_temp), start_temp, target_temp, 255, 0);
+        if (blue != old_blue) set_led_color(255, 0, (old_blue = blue));
+      }
+    #endif
 
     #if TEMP_RESIDENCY_TIME > 0
 
-      float temp_diff = fabs(theTarget - temp);
+      const float temp_diff = fabs(target_temp - temp);
 
       if (!residency_start_ms) {
         // Start the TEMP_RESIDENCY_TIME timer when we reach target temp for the first time.
 
   } while (wait_for_heatup && TEMP_CONDITIONS);
 
-  if (wait_for_heatup) LCD_MESSAGEPGM(MSG_HEATING_COMPLETE);
+  if (wait_for_heatup) {
+    LCD_MESSAGEPGM(MSG_HEATING_COMPLETE);
+    #if ENABLED(PRINTER_EVENT_LEDS)
+      #if ENABLED(RGBW_LED)
+        set_led_color(0, 0, 0, 255);  // Turn on the WHITE LED
+      #else
+        set_led_color(255, 255, 255); // Set LEDs All On
+      #endif
+    #endif
+  }
 
   KEEPALIVE_STATE(IN_HANDLER);
 }
       #define TEMP_BED_CONDITIONS (wants_to_cool ? thermalManager.isCoolingBed() : thermalManager.isHeatingBed())
     #endif
 
-    float theTarget = -1.0, old_temp = 9999.0;
+    float target_temp = -1.0, old_temp = 9999.0;
     bool wants_to_cool = false;
     wait_for_heatup = true;
     millis_t now, next_temp_ms = 0, next_cool_check_ms = 0;
 
     target_extruder = active_extruder; // for print_heaterstates
 
+    #if ENABLED(PRINTER_EVENT_LEDS)
+      const float start_temp = thermalManager.degBed();
+      uint8_t old_red = 255;
+    #endif
+
     do {
       // Target temperature might be changed during the loop
-      if (theTarget != thermalManager.degTargetBed()) {
+      if (target_temp != thermalManager.degTargetBed()) {
         wants_to_cool = thermalManager.isCoolingBed();
-        theTarget = thermalManager.degTargetBed();
+        target_temp = thermalManager.degTargetBed();
 
         // Exit if S<lower>, continue if S<higher>, R<lower>, or R<higher>
         if (no_wait_for_cooling && wants_to_cool) break;
       idle();
       refresh_cmd_timeout(); // to prevent stepper_inactive_time from running out
 
-      float temp = thermalManager.degBed();
+      const float temp = thermalManager.degBed();
+
+      #if ENABLED(PRINTER_EVENT_LEDS)
+        // Gradually change LED strip from blue to violet as bed heats up
+        if (!wants_to_cool) {
+          const uint8_t red = map(constrain(temp, start_temp, target_temp), start_temp, target_temp, 0, 255);
+          if (red != old_red) set_led_color((old_red = red), 0, 255);
+        }
+      }
+      #endif
 
       #if TEMP_BED_RESIDENCY_TIME > 0
 
-        float temp_diff = fabs(theTarget - temp);
+        const float temp_diff = fabs(target_temp - temp);
 
         if (!residency_start_ms) {
           // Start the TEMP_BED_RESIDENCY_TIME timer when we reach target temp for the first time.
 
 #endif // PARK_HEAD_ON_PAUSE
 
-#if ENABLED(BLINKM) || ENABLED(RGB_LED)
-
-  void set_led_color(const uint8_t r, const uint8_t g, const uint8_t b) {
-
-    #if ENABLED(BLINKM)
-
-      // This variant uses i2c to send the RGB components to the device.
-      SendColors(r, g, b);
-
-    #else
-
-      // This variant uses 3 separate pins for the RGB components.
-      // If the pins can do PWM then their intensity will be set.
-      digitalWrite(RGB_LED_R_PIN, r ? HIGH : LOW);
-      digitalWrite(RGB_LED_G_PIN, g ? HIGH : LOW);
-      digitalWrite(RGB_LED_B_PIN, b ? HIGH : LOW);
-      analogWrite(RGB_LED_R_PIN, r);
-      analogWrite(RGB_LED_G_PIN, g);
-      analogWrite(RGB_LED_B_PIN, b);
-
-    #endif
-  }
+#if HAS_COLOR_LEDS
 
   /**
-   * M150: Set Status LED Color - Use R-U-B for R-G-B
+   * M150: Set Status LED Color - Use R-U-B-W for R-G-B-W
    *
-   * Always sets all 3 components. If a component is left out, set to 0.
+   * Always sets all 3 or 4 components. If a component is left out, set to 0.
    *
    * Examples:
    *
    *   M150 R255 U127  ; Turn LED orange (PWM only)
    *   M150            ; Turn LED off
    *   M150 R U B      ; Turn LED white
+   *   M150 W          ; Turn LED white using a white LED
    *
    */
   inline void gcode_M150() {
       code_seen('R') ? (code_has_value() ? code_value_byte() : 255) : 0,
       code_seen('U') ? (code_has_value() ? code_value_byte() : 255) : 0,
       code_seen('B') ? (code_has_value() ? code_value_byte() : 255) : 0
+      #if ENABLED(RGBW_LED)
+        , code_seen('W') ? (code_has_value() ? code_value_byte() : 255) : 0
+      #endif
     );
   }
 
 
   inline void gcode_M605() {
     stepper.synchronize();
-    extruder_duplication_enabled = code_seen('S') && code_value_int() == 2;
+    extruder_duplication_enabled = code_seen('S') && code_value_int() == (int)DXC_DUPLICATION_MODE;
     SERIAL_ECHO_START;
     SERIAL_ECHOLNPAIR(MSG_DUPLICATION_MODE, extruder_duplication_enabled ? MSG_ON : MSG_OFF);
   }
     break;
 
     case 'M': switch (codenum) {
-      #if ENABLED(ULTIPANEL) || ENABLED(EMERGENCY_PARSER)
+      #if HAS_RESUME_CONTINUE
         case 0: // M0: Unconditional stop - Wait for user button press on LCD
         case 1: // M1: Conditional stop - Wait for user button press on LCD
           gcode_M0_M1();
           break;
       #endif
 
-      #if ENABLED(BLINKM) || ENABLED(RGB_LED)
+      #if HAS_COLOR_LEDS
 
         case 150: // M150: Set Status LED Color
           gcode_M150();

Marlin/SanityCheck.h

 #endif
 
 /**
- * We try our best to include sanity checks for all the changes configuration
- * directives because people have a tendency to use outdated config files with
- * the bleding edge source code, but sometimes this is not enough. This check
- * will force a minimum config file revision, otherwise Marlin will not build.
+ * We try our best to include sanity checks for all changed configuration
+ * directives because users have a tendency to use outdated config files with
+ * the bleeding-edge source code, but sometimes this is not enough. This check
+ * forces a minimum config file revision. Otherwise Marlin will not build.
  */
 #if ! defined(CONFIGURATION_H_VERSION) || CONFIGURATION_H_VERSION < REQUIRED_CONFIGURATION_H_VERSION
   #error "You are using an old Configuration.h file, update it before building Marlin."
 /**
  * RGB_LED Requirements
  */
+#define _RGB_TEST (PIN_EXISTS(RGB_LED_R) && PIN_EXISTS(RGB_LED_G) && PIN_EXISTS(RGB_LED_B))
 #if ENABLED(RGB_LED)
-  #if !(PIN_EXISTS(RGB_LED_R) && PIN_EXISTS(RGB_LED_G) && PIN_EXISTS(RGB_LED_B))
+  #if !_RGB_TEST
     #error "RGB_LED requires RGB_LED_R_PIN, RGB_LED_G_PIN, and RGB_LED_B_PIN."
+  #elif ENABLED(RGBW_LED)
+    #error "Please enable only one of RGB_LED and RGBW_LED."
   #elif ENABLED(BLINKM)
     #error "RGB_LED and BLINKM are currently incompatible (both use M150)."
   #endif
+#elif ENABLED(RGBW_LED)
+  #if !(_RGB_TEST && PIN_EXISTS(RGB_LED_W))
+    #error "RGBW_LED requires RGB_LED_R_PIN, RGB_LED_G_PIN, RGB_LED_B_PIN, and RGB_LED_W_PIN."
+  #elif ENABLED(BLINKM)
+    #error "RGBW_LED and BLINKM are currently incompatible (both use M150)."
+  #endif
+#elif DISABLED(BLINKM) && ENABLED(PRINTER_EVENT_LEDS)
+  #error "PRINTER_EVENT_LEDS requires BLINKM, RGB_LED, or RGBW_LED."
 #endif
 
 /**

Marlin/example_configurations/Cartesio/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/Felix/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/Felix/DUAL/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/Hephestos/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/Hephestos_2/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/K8200/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/K8400/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/K8400/Dual-head/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/RepRapWorld/Megatronics/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/RigidBot/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/SCARA/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/TAZ4/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/TinyBoy2/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/WITBOX/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/adafruit/ST7565/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/delta/flsun_kossel_mini/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/delta/generic/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/delta/kossel_mini/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/delta/kossel_pro/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/delta/kossel_xl/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/makibox/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/tvrrug/Round2/Configuration.h

 //define BlinkM/CyzRgb Support
 //#define BLINKM
 
-// Support for an RGB LED using 3 separate pins with optional PWM
+/**
+ * RGB LED / LED Strip Control
+ *
+ * Enable support for an RGB LED connected to 5V digital pins, or
+ * an RGB Strip connected to MOSFETs controlled by digital pins.
+ *
+ * Adds the M150 command to set the LED (or LED strip) color. 
+ * If pins are PWM capable (e.g., 4, 5, 6, 11) then a range of
+ * luminance values can be set from 0 to 255.
+ *
+ * *** CAUTION ***
+ *  LED Strips require a MOFSET Chip between PWM lines and LEDs,
+ *  as the Arduino cannot handle the current the LEDs will require.
+ *  Failure to follow this precaution can destroy your Arduino!
+ * *** CAUTION ***
+ *
+ */
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\

Marlin/example_configurations/wt150/Configuration.h

 
 // Support for an RGB LED using 3 separate pins with optional PWM
 //#define RGB_LED
-#if ENABLED(RGB_LED)
+//#define RGBW_LED
+#if ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define RGB_LED_R_PIN 34
   #define RGB_LED_G_PIN 43
   #define RGB_LED_B_PIN 35
+  #define RGB_LED_W_PIN -1
+#endif
+
+/**
+ * Printer Event LEDs
+ *
+ * During printing, the LEDs will reflect the printer status:
+ *
+ *  - Gradually change from blue to violet as the heated bed gets to target temp
+ *  - Gradually change from violet to red as the hotend gets to temperature
+ *  - Change to white to illuminate work surface
+ *  - Change to green once print has finished
+ *  - Turn off after the print has finished and the user has pushed a button
+ */
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
+  #define PRINTER_EVENT_LEDS
 #endif
 
 /*********************************************************************\