Add support for an RGBW LED

Marlin/Conditionals_LCD.h

@@ -386,6 +386,6 @@
 
   #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))
+  #define HAS_COLOR_LEDS (ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED))
 
 #endif //CONDITIONALS_LCD_H

Marlin/Configuration.h

@@ -1532,10 +1532,12 @@
  *
  */
 //#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
 
 /**
@@ -1549,7 +1551,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/Marlin_main.cpp

@@ -947,7 +947,12 @@ void servo_init() {
 
 #if HAS_COLOR_LEDS
 
-  void set_led_color(const uint8_t r, const uint8_t g, const uint8_t b) {
+  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)
 
@@ -965,6 +970,11 @@ void servo_init() {
       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
   }
 
@@ -1156,7 +1166,7 @@ inline void get_serial_commands() {
           card.printingHasFinished();
           #if ENABLED(PRINTER_EVENT_LEDS)
             LCD_MESSAGEPGM(MSG_INFO_COMPLETED_PRINTS);
-            set_led_color(0, 255, 0);
+            set_led_color(0, 255, 0); // Green
             #if HAS_RESUME_CONTINUE
               KEEPALIVE_STATE(PAUSED_FOR_USER);
               wait_for_user = true;
@@ -1165,7 +1175,7 @@ inline void get_serial_commands() {
             #else
               safe_delay(1000);
             #endif
-            set_led_color(0, 0, 0);
+            set_led_color(0, 0, 0);   // OFF
           #endif
           card.checkautostart(true);
         }
@@ -6199,7 +6209,11 @@ inline void gcode_M109() {
   if (wait_for_heatup) {
     LCD_MESSAGEPGM(MSG_HEATING_COMPLETE);
     #if ENABLED(PRINTER_EVENT_LEDS)
-      set_led_color(255, 255, 255); // Set LEDs ALL WHITE
+      #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
   }
 
@@ -6844,9 +6858,9 @@ inline void gcode_M121() { endstops.enable_globally(false); }
 #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:
    *
@@ -6854,6 +6868,7 @@ inline void gcode_M121() { endstops.enable_globally(false); }
    *   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() {
@@ -6861,6 +6876,9 @@ inline void gcode_M121() { endstops.enable_globally(false); }
       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
     );
   }
 

Marlin/SanityCheck.h

@@ -34,10 +34,10 @@
 #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."
@@ -951,14 +951,23 @@ static_assert(1 >= 0
 /**
  * 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 or RGB_LED."
+  #error "PRINTER_EVENT_LEDS requires BLINKM, RGB_LED, or RGBW_LED."
 #endif
 
 /**

Marlin/example_configurations/Cartesio/Configuration.h

@@ -1531,10 +1531,12 @@
  *
  */
 //#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
 
 /**
@@ -1548,7 +1550,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/Felix/Configuration.h

@@ -1515,10 +1515,12 @@
  *
  */
 //#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
 
 /**
@@ -1532,7 +1534,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/Felix/DUAL/Configuration.h

@@ -1515,10 +1515,12 @@
  *
  */
 //#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
 
 /**
@@ -1532,7 +1534,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/Hephestos/Configuration.h

@@ -1523,10 +1523,12 @@
  *
  */
 //#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
 
 /**
@@ -1540,7 +1542,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/Hephestos_2/Configuration.h

@@ -1526,10 +1526,12 @@
  *
  */
 //#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
 
 /**
@@ -1543,7 +1545,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/K8200/Configuration.h

@@ -1566,10 +1566,12 @@
  *
  */
 //#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
 
 /**
@@ -1583,7 +1585,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/K8400/Configuration.h

@@ -1532,10 +1532,12 @@
  *
  */
 //#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
 
 /**
@@ -1549,7 +1551,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

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

@@ -1532,10 +1532,12 @@
  *
  */
 //#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
 
 /**
@@ -1549,7 +1551,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/RepRapWorld/Megatronics/Configuration.h

@@ -1532,10 +1532,12 @@
  *
  */
 //#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
 
 /**
@@ -1549,7 +1551,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/RigidBot/Configuration.h

@@ -1533,10 +1533,12 @@
  *
  */
 //#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
 
 /**
@@ -1550,7 +1552,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/SCARA/Configuration.h

@@ -1547,10 +1547,12 @@
  *
  */
 //#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
 
 /**
@@ -1564,7 +1566,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/TAZ4/Configuration.h

@@ -1552,10 +1552,12 @@
  *
  */
 //#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
 
 /**
@@ -1569,7 +1571,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/TinyBoy2/Configuration.h

@@ -1588,10 +1588,12 @@
  *
  */
 //#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
 
 /**
@@ -1605,7 +1607,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/WITBOX/Configuration.h

@@ -1523,10 +1523,12 @@
  *
  */
 //#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
 
 /**
@@ -1540,7 +1542,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/adafruit/ST7565/Configuration.h

@@ -1532,10 +1532,12 @@
  *
  */
 //#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
 
 /**
@@ -1549,7 +1551,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/delta/flsun_kossel_mini/Configuration.h

@@ -1648,10 +1648,12 @@
  *
  */
 //#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
 
 /**
@@ -1665,7 +1667,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/delta/generic/Configuration.h

@@ -1634,10 +1634,12 @@
  *
  */
 //#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
 
 /**
@@ -1651,7 +1653,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/delta/kossel_mini/Configuration.h

@@ -1630,10 +1630,12 @@
  *
  */
 //#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
 
 /**
@@ -1647,7 +1649,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/delta/kossel_pro/Configuration.h

@@ -1638,10 +1638,12 @@
  *
  */
 //#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
 
 /**
@@ -1655,7 +1657,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/delta/kossel_xl/Configuration.h

@@ -1645,10 +1645,12 @@
  *
  */
 //#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
 
 /**
@@ -1662,7 +1664,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/makibox/Configuration.h

@@ -1535,10 +1535,12 @@
  *
  */
 //#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
 
 /**
@@ -1552,7 +1554,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/tvrrug/Round2/Configuration.h

@@ -1528,10 +1528,12 @@
  *
  */
 //#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
 
 /**
@@ -1545,7 +1547,7 @@
  *  - 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)
+#if ENABLED(BLINKM) || ENABLED(RGB_LED) || ENABLED(RGBW_LED)
   #define PRINTER_EVENT_LEDS
 #endif
 

Marlin/example_configurations/wt150/Configuration.h

@@ -1521,10 +1521,27 @@
 
 // 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
 
 /*********************************************************************\