Independent Neopixel option (#19115)

Marlin/Configuration.h

   #define NEOPIXEL_PIN     4       // LED driving pin
   //#define NEOPIXEL2_TYPE NEOPIXEL_TYPE
   //#define NEOPIXEL2_PIN    5
-  //#define NEOPIXEL2_INSERIES     // Default behavior is NeoPixel 2 in parallel
-  #define NEOPIXEL_PIXELS 30       // Number of LEDs in the strip, larger of 2 strips if 2 NeoPixel strips are used
+  #define NEOPIXEL_PIXELS 30       // Number of LEDs in the strip. (Longest strip when NEOPIXEL2_SEPARATE is disabled.)
   #define NEOPIXEL_IS_SEQUENTIAL   // Sequential display for temperature change - LED by LED. Disable to change all LEDs at once.
   #define NEOPIXEL_BRIGHTNESS 127  // Initial brightness (0-255)
   //#define NEOPIXEL_STARTUP_TEST  // Cycle through colors at startup
 
+  // Support for second Adafruit NeoPixel LED driver controlled with M150 S1 ...
+  //#define NEOPIXEL2_SEPARATE
+  #if ENABLED(NEOPIXEL2_SEPARATE)
+    #define NEOPIXEL2_PIXELS      15  // Number of LEDs in the second strip
+    #define NEOPIXEL2_BRIGHTNESS 127  // Initial brightness (0-255)
+    #define NEOPIXEL2_STARTUP_TEST    // Cycle through colors at startup
+  #else
+    //#define NEOPIXEL2_INSERIES      // Default behavior is NeoPixel 2 in parallel
+  #endif
+
   // Use a single NeoPixel LED for static (background) lighting
   //#define NEOPIXEL_BKGD_LED_INDEX  0               // Index of the LED to use
   //#define NEOPIXEL_BKGD_COLOR { 255, 255, 255, 0 } // R, G, B, W

Marlin/Configuration_adv.h

   //#define LED_CONTROL_MENU
   #if ENABLED(LED_CONTROL_MENU)
     #define LED_COLOR_PRESETS                 // Enable the Preset Color menu option
+    //#define NEO2_COLOR_PRESETS              // Enable a second NeoPixel Preset Color menu option
     #if ENABLED(LED_COLOR_PRESETS)
       #define LED_USER_PRESET_RED        255  // User defined RED value
       #define LED_USER_PRESET_GREEN      128  // User defined GREEN value
       #define LED_USER_PRESET_BRIGHTNESS 255  // User defined intensity
       //#define LED_USER_PRESET_STARTUP       // Have the printer display the user preset color on startup
     #endif
+    #if ENABLED(NEO2_COLOR_PRESETS)
+      #define NEO2_USER_PRESET_RED        255  // User defined RED value
+      #define NEO2_USER_PRESET_GREEN      128  // User defined GREEN value
+      #define NEO2_USER_PRESET_BLUE         0  // User defined BLUE value
+      #define NEO2_USER_PRESET_WHITE      255  // User defined WHITE value
+      #define NEO2_USER_PRESET_BRIGHTNESS 255  // User defined intensity
+      //#define NEO2_USER_PRESET_STARTUP       // Have the printer display the user preset color on startup for the second strip
+    #endif
   #endif
 
 #endif // HAS_LCD_MENU

Marlin/src/MarlinCore.cpp

     SETUP_RUN(leds.setup());
   #endif
 
+  #if ENABLED(NEOPIXEL2_SEPARATE)
+    SETUP_RUN(leds2.setup());
+  #endif
+
   #if ENABLED(USE_CONTROLLER_FAN)     // Set up fan controller to initialize also the default configurations.
     SETUP_RUN(controllerFan.setup());
   #endif

Marlin/src/feature/leds/leds.cpp

 
 #if ENABLED(LED_COLOR_PRESETS)
   const LEDColor LEDLights::defaultLEDColor = MakeLEDColor(
-    LED_USER_PRESET_RED,
-    LED_USER_PRESET_GREEN,
-    LED_USER_PRESET_BLUE,
-    LED_USER_PRESET_WHITE,
-    LED_USER_PRESET_BRIGHTNESS
+    LED_USER_PRESET_RED, LED_USER_PRESET_GREEN, LED_USER_PRESET_BLUE,
+    LED_USER_PRESET_WHITE, LED_USER_PRESET_BRIGHTNESS
   );
 #endif
 
 
     // This variant uses 3-4 separate pins for the RGB(W) components.
     // If the pins can do PWM then their intensity will be set.
-    #define UPDATE_RGBW(C,c) do { if (PWM_PIN(RGB_LED_##C##_PIN)) \
+    #define UPDATE_RGBW(C,c) do {                       \
+      if (PWM_PIN(RGB_LED_##C##_PIN))                   \
         analogWrite(pin_t(RGB_LED_##C##_PIN), incol.c); \
-      else WRITE(RGB_LED_##C##_PIN, incol.c ? HIGH : LOW); }while(0)
-    UPDATE_RGBW(R,r);
-    UPDATE_RGBW(G,g);
-    UPDATE_RGBW(B,b);
+      else                                              \
+        WRITE(RGB_LED_##C##_PIN, incol.c ? HIGH : LOW); \
+    }while(0)
+    UPDATE_RGBW(R,r); UPDATE_RGBW(G,g); UPDATE_RGBW(B,b);
     #if ENABLED(RGBW_LED)
       UPDATE_RGBW(W,w);
     #endif
 
 #endif
 
-#endif // HAS_COLOR_LEDS
+#if ENABLED(NEOPIXEL2_SEPARATE)
+
+  #if ENABLED(NEO2_COLOR_PRESETS)
+    const LEDColor LEDLights2::defaultLEDColor = MakeLEDColor(
+      NEO2_USER_PRESET_RED, NEO2_USER_PRESET_GREEN, NEO2_USER_PRESET_BLUE,
+      NEO2_USER_PRESET_WHITE, NEO2_USER_PRESET_BRIGHTNESS
+    );
+  #endif
+
+  #if ENABLED(LED_CONTROL_MENU)
+    LEDColor LEDLights2::color;
+    bool LEDLights2::lights_on;
+  #endif
+
+  LEDLights2 leds2;
+
+  void LEDLights2::setup() {
+    neo2.init();
+    TERN_(NEO2_USER_PRESET_STARTUP, set_default());
+  }
+
+  void LEDLights2::set_color(const LEDColor &incol) {
+    const uint32_t neocolor = LEDColorWhite() == incol
+                            ? neo2.Color(NEO2_WHITE)
+                            : neo2.Color(incol.r, incol.g, incol.b, incol.w);
+    neo2.set_brightness(incol.i);
+    neo2.set_color(neocolor);
+  }
+
+#endif  // NEOPIXEL2_SEPARATE
+
+#endif  // HAS_COLOR_LEDS

Marlin/src/feature/leds/leds.h

   static inline void set_color(uint8_t r, uint8_t g, uint8_t b
     #if HAS_WHITE_LED
       , uint8_t w=0
-      #if ENABLED(NEOPIXEL_LED)
-        , uint8_t i=NEOPIXEL_BRIGHTNESS
-      #endif
     #endif
     #if ENABLED(NEOPIXEL_LED)
+      , uint8_t i=NEOPIXEL_BRIGHTNESS
       , bool isSequence=false
     #endif
   ) {
 };
 
 extern LEDLights leds;
+
+#if ENABLED(NEOPIXEL2_SEPARATE)
+
+  class LEDLights2 {
+  public:
+    LEDLights2() {}
+
+    static void setup(); // init()
+
+    static void set_color(const LEDColor &color);
+
+    inline void set_color(uint8_t r, uint8_t g, uint8_t b, uint8_t w=0, uint8_t i=NEOPIXEL2_BRIGHTNESS) {
+      set_color(MakeLEDColor(r, g, b, w, i));
+    }
+
+    static inline void set_off()   { set_color(LEDColorOff()); }
+    static inline void set_green() { set_color(LEDColorGreen()); }
+    static inline void set_white() { set_color(LEDColorWhite()); }
+
+    #if ENABLED(NEO2_COLOR_PRESETS)
+      static const LEDColor defaultLEDColor;
+      static inline void set_default()  { set_color(defaultLEDColor); }
+      static inline void set_red()      { set_color(LEDColorRed()); }
+      static inline void set_orange()   { set_color(LEDColorOrange()); }
+      static inline void set_yellow()   { set_color(LEDColorYellow()); }
+      static inline void set_blue()     { set_color(LEDColorBlue()); }
+      static inline void set_indigo()   { set_color(LEDColorIndigo()); }
+      static inline void set_violet()   { set_color(LEDColorViolet()); }
+    #endif
+
+    #if ENABLED(LED_CONTROL_MENU)
+      static LEDColor color; // last non-off color
+      static bool lights_on; // the last set color was "on"
+      static void toggle();  // swap "off" with color
+      static inline void update() { set_color(color); }
+    #endif
+  };
+
+  extern LEDLights2 leds2;
+
+#endif // NEOPIXEL2_SEPARATE

Marlin/src/feature/leds/neopixel.cpp

 
 #include "neopixel.h"
 
-#if ENABLED(NEOPIXEL_STARTUP_TEST)
+#if EITHER(NEOPIXEL_STARTUP_TEST, NEOPIXEL2_STARTUP_TEST)
   #include "../../core/utility.h"
 #endif
 
 int8_t Marlin_NeoPixel::neoindex;
 
 Adafruit_NeoPixel Marlin_NeoPixel::adaneo1(NEOPIXEL_PIXELS, NEOPIXEL_PIN, NEOPIXEL_TYPE + NEO_KHZ800)
-  #if EITHER(MULTIPLE_NEOPIXEL_TYPES, NEOPIXEL2_INSERIES)
+  #if CONJOINED_NEOPIXEL
     , Marlin_NeoPixel::adaneo2(NEOPIXEL_PIXELS, NEOPIXEL2_PIN, NEOPIXEL2_TYPE + NEO_KHZ800)
   #endif
 ;
 }
 #endif
 
+#if ENABLED(NEOPIXEL2_SEPARATE)
+
+  Marlin_NeoPixel2 neo2;
+
+  int8_t Marlin_NeoPixel2::neoindex;
+  Adafruit_NeoPixel Marlin_NeoPixel2::adaneo(NEOPIXEL2_PIXELS, NEOPIXEL2_PIN, NEOPIXEL2_TYPE);
+
+  void Marlin_NeoPixel2::set_color(const uint32_t color) {
+    if (neoindex >= 0) {
+      set_pixel_color(neoindex, color);
+      neoindex = -1;
+    }
+    else {
+      for (uint16_t i = 0; i < pixels(); ++i)
+        set_pixel_color(i, color);
+    }
+    show();
+  }
+
+  void Marlin_NeoPixel2::set_color_startup(const uint32_t color) {
+    for (uint16_t i = 0; i < pixels(); ++i)
+      set_pixel_color(i, color);
+    show();
+  }
+
+  void Marlin_NeoPixel2::init() {
+    neoindex = -1;                        // -1 .. NEOPIXEL2_PIXELS-1 range
+    set_brightness(NEOPIXEL2_BRIGHTNESS); //  0 .. 255 range
+    begin();
+    show();  // initialize to all off
+
+    #if ENABLED(NEOPIXEL2_STARTUP_TEST)
+      set_color_startup(adaneo.Color(255, 0, 0, 0));  // red
+      safe_delay(500);
+      set_color_startup(adaneo.Color(0, 255, 0, 0));  // green
+      safe_delay(500);
+      set_color_startup(adaneo.Color(0, 0, 255, 0));  // blue
+      safe_delay(500);
+    #endif
+
+    #if ENABLED(NEO2_USER_PRESET_STARTUP)
+      set_color(adaneo.Color(NEO2_USER_PRESET_RED, NEO2_USER_PRESET_GREEN, NEO2_USER_PRESET_BLUE, NEO2_USER_PRESET_WHITE));
+    #else
+      set_color(adaneo.Color(0, 0, 0, 0));
+    #endif
+  }
+
+#endif // NEOPIXEL2_SEPARATE
+
 #endif // NEOPIXEL_LED

Marlin/src/feature/leds/neopixel.h

 // Defines
 // ------------------------
 
-#if defined(NEOPIXEL2_TYPE) && NEOPIXEL2_TYPE != NEOPIXEL_TYPE
+#if defined(NEOPIXEL2_TYPE) && NEOPIXEL2_TYPE != NEOPIXEL_TYPE && DISABLED(NEOPIXEL2_SEPARATE)
   #define MULTIPLE_NEOPIXEL_TYPES 1
 #endif
 
+#if EITHER(MULTIPLE_NEOPIXEL_TYPES, NEOPIXEL2_INSERIES)
+  #define CONJOINED_NEOPIXEL 1
+#endif
+
 #if NEOPIXEL_TYPE == NEO_RGB || NEOPIXEL_TYPE == NEO_RBG || NEOPIXEL_TYPE == NEO_GRB || NEOPIXEL_TYPE == NEO_GBR || NEOPIXEL_TYPE == NEO_BRG || NEOPIXEL_TYPE == NEO_BGR
   #define NEOPIXEL_IS_RGB 1
 #else
 class Marlin_NeoPixel {
 private:
   static Adafruit_NeoPixel adaneo1
-    #if EITHER(MULTIPLE_NEOPIXEL_TYPES, NEOPIXEL2_INSERIES)
+    #if CONJOINED_NEOPIXEL
       , adaneo2
     #endif
   ;
 
   static inline void begin() {
     adaneo1.begin();
-    #if ENABLED(NEOPIXEL2_INSERIES)
-      adaneo2.begin();
-    #else
-      TERN_(MULTIPLE_NEOPIXEL_TYPES, adaneo2.begin());
-    #endif
+    TERN_(CONJOINED_NEOPIXEL, adaneo2.begin());
   }
 
   static inline void set_pixel_color(const uint16_t n, const uint32_t c) {
       else adaneo1.setPixelColor(n, c);
     #else
       adaneo1.setPixelColor(n, c);
-      TERN_(MULTIPLE_NEOPIXEL_TYPES, adaneo2.setPixelColor(n, c));
+      #if MULTIPLE_NEOPIXEL_TYPES
+        adaneo2.setPixelColor(n, c);
+      #endif
     #endif
   }
 
   static inline void set_brightness(const uint8_t b) {
     adaneo1.setBrightness(b);
-    #if ENABLED(NEOPIXEL2_INSERIES)
-      adaneo2.setBrightness(b);
-    #else
-      TERN_(MULTIPLE_NEOPIXEL_TYPES, adaneo2.setBrightness(b));
-    #endif
+    TERN_(CONJOINED_NEOPIXEL, adaneo2.setBrightness(b));
   }
 
   static inline void show() {
     adaneo1.show();
     #if PIN_EXISTS(NEOPIXEL2)
-      #if EITHER(MULTIPLE_NEOPIXEL_TYPES, NEOPIXEL2_INSERIES)
+      #if CONJOINED_NEOPIXEL
         adaneo2.show();
       #else
         adaneo1.setPin(NEOPIXEL2_PIN);
 };
 
 extern Marlin_NeoPixel neo;
+
+// Neo pixel channel 2
+#if ENABLED(NEOPIXEL2_SEPARATE)
+  
+  #if NEOPIXEL2_TYPE == NEO_RGB || NEOPIXEL2_TYPE == NEO_RBG || NEOPIXEL2_TYPE == NEO_GRB || NEOPIXEL2_TYPE == NEO_GBR || NEOPIXEL2_TYPE == NEO_BRG || NEOPIXEL2_TYPE == NEO_BGR
+    #define NEOPIXEL2_IS_RGB 1
+  #else
+    #define NEOPIXEL2_IS_RGBW 1
+  #endif
+
+  #if NEOPIXEL2_IS_RGB
+    #define NEO2_WHITE 255, 255, 255, 0
+  #else
+    #define NEO2_WHITE 0, 0, 0, 255
+  #endif
+
+  class Marlin_NeoPixel2 {
+  private:
+    static Adafruit_NeoPixel adaneo;
+
+  public:
+    static int8_t neoindex;
+
+    static void init();
+    static void set_color_startup(const uint32_t c);
+
+    static void set_color(const uint32_t c);
+
+    static inline void begin() { adaneo.begin(); }
+    static inline void set_pixel_color(const uint16_t n, const uint32_t c) { adaneo.setPixelColor(n, c); }
+    static inline void set_brightness(const uint8_t b) { adaneo.setBrightness(b); }
+    static inline void show() { adaneo.show(); }
+
+    // Accessors
+    static inline uint16_t pixels() { return adaneo.numPixels();}
+    static inline uint8_t brightness() { return adaneo.getBrightness(); }
+    static inline uint32_t Color(uint8_t r, uint8_t g, uint8_t b, uint8_t w) {
+      return adaneo.Color(r, g, b, w);
+    }
+  };
+
+  extern Marlin_NeoPixel2 neo2;
+
+#endif // NEOPIXEL2_SEPARATE

Marlin/src/gcode/feature/leds/M150.cpp

  * With NEOPIXEL_LED:
  *  I<index>  Set the NeoPixel index to affect. Default: All
  *
+ * With NEOPIXEL2_SEPARATE:
+ *  S<index>  The NeoPixel strip to set. Default is index 0.
+ *
  * Examples:
  *
  *   M150 R255       ; Turn LED red
  *   M150 P127       ; Set LED 50% brightness
  *   M150 P          ; Set LED full brightness
  *   M150 I1 R       ; Set NEOPIXEL index 1 to red
+ *   M150 S1 I1 R    ; Set SEPARATE index 1 to red
  */
+
 void GcodeSuite::M150() {
   #if ENABLED(NEOPIXEL_LED)
-    neo.neoindex = parser.intval('I', -1);
+    const uint8_t index = parser.intval('I', -1);
+    #if ENABLED(NEOPIXEL2_SEPARATE)
+      const uint8_t unit = parser.intval('S'),
+                    brightness = unit ? neo2.brightness() : neo.brightness();
+      *(unit ? &neo2.neoindex : &neo.neoindex) = index;
+    #else
+      const uint8_t brightness = neo.brightness();
+      neo.neoindex = index;
+    #endif
   #endif
-  leds.set_color(MakeLEDColor(
+
+  const LEDColor color = MakeLEDColor(
     parser.seen('R') ? (parser.has_value() ? parser.value_byte() : 255) : 0,
     parser.seen('U') ? (parser.has_value() ? parser.value_byte() : 255) : 0,
     parser.seen('B') ? (parser.has_value() ? parser.value_byte() : 255) : 0,
     parser.seen('W') ? (parser.has_value() ? parser.value_byte() : 255) : 0,
-    parser.seen('P') ? (parser.has_value() ? parser.value_byte() : 255) : neo.brightness()
-  ));
+    parser.seen('P') ? (parser.has_value() ? parser.value_byte() : 255) : brightness
+  );
+
+  #if ENABLED(NEOPIXEL2_SEPARATE)
+    if (unit == 1) { leds2.set_color(color); return; }
+  #endif
+
+  leds.set_color(color);
 }
 
 #endif // HAS_COLOR_LEDS

Marlin/src/inc/Conditionals_LCD.h

 #ifndef EXTRUDE_MINTEMP
   #define EXTRUDE_MINTEMP 170
 #endif
+
+// This flag indicates if Neopixel pins are shared or separated  
+#if EITHER(MULTIPLE_NEOPIXEL_TYPES, NEOPIXEL2_INSERIES)
+  #define CONJOINED_NEOPIXEL 1
+#endif

Marlin/src/inc/Conditionals_adv.h

   #endif
 #endif
 
+#if BOTH(LED_CONTROL_MENU, NEOPIXEL2_SEPARATE)
+  #ifndef LED2_USER_PRESET_RED
+    #define LED2_USER_PRESET_RED       255
+  #endif
+  #ifndef LED2_USER_PRESET_GREEN
+    #define LED2_USER_PRESET_GREEN     255
+  #endif
+  #ifndef LED2_USER_PRESET_BLUE
+    #define LED2_USER_PRESET_BLUE      255
+  #endif
+  #ifndef LED2_USER_PRESET_WHITE
+    #define LED2_USER_PRESET_WHITE     0
+  #endif
+  #ifndef LED2_USER_PRESET_BRIGHTNESS
+    #ifdef NEOPIXEL2_BRIGHTNESS
+      #define LED2_USER_PRESET_BRIGHTNESS NEOPIXEL2_BRIGHTNESS
+    #else
+      #define LED2_USER_PRESET_BRIGHTNESS 255
+    #endif
+  #endif
+#endif
+
 // If platform requires early initialization of watchdog to properly boot
 #if ENABLED(USE_WATCHDOG) && defined(ARDUINO_ARCH_SAM)
   #define EARLY_WATCHDOG 1

Marlin/src/inc/SanityCheck.h

   #if !(PIN_EXISTS(NEOPIXEL) && NEOPIXEL_PIXELS > 0)
     #error "NEOPIXEL_LED requires NEOPIXEL_PIN and NEOPIXEL_PIXELS."
   #endif
+  #elif ENABLED(NEOPIXEL2_SEPARATE)
+   #if !(PIN_EXISTS(NEOPIXEL2) && NEOPIXEL2_PIXELS > 0)
+    #error "NEOPIXEL2 requires NEOPIXEL2_PIN and NEOPIXEL2_PIXELS."
+  #endif
 #endif
+
 #undef _RGB_TEST
 
 #if DISABLED(NO_COMPILE_TIME_PWM)