mutiple RGBW leds support for DMX control

RGBW leds can be individually adressed through E1.31 control.
-Added option 'Multi RGBW' to the settings
-Modified e131.cpp accordingly
-Tuned other parameters to make it work

wled00/const.h

@@ -71,6 +71,7 @@
 #define DMX_MODE_EFFECT           3            //trigger standalone effects of WLED (11 channels)
 #define DMX_MODE_MULTIPLE_RGB     4            //every LED is addressed with its own RGB (ledCount * 3 channels)
 #define DMX_MODE_MULTIPLE_DRGB    5            //every LED is addressed with its own RGB and share a master dimmer (ledCount * 3 + 1 channels)
+#define DMX_MODE_MULTIPLE_RGBW    6            //every LED is addressed with its own RGBW (ledCount * 4 channels)
 
 //Light capability byte (unused) 0bRRCCTTTT
 //bits 0/1/2/3: specifies a type of LED driver. A single "driver" may have different chip models but must have the same protocol/behavior

wled00/data/settings_sync.htm

@@ -64,6 +64,7 @@ DMX mode:
 <option value=3>Effect</option>
 <option value=4>Multi RGB</option>
 <option value=5>Dimmer + Multi RGB</option>
+<option value=6>Multi RGBW</option>
 </select><br>
 <a href="https://github.com/Aircoookie/WLED/wiki/E1.31-DMX" target="_blank">E1.31 info</a><br>
 Timeout: <input name="ET" type="number" min="1" max="65000" required> ms<br>

wled00/e131.cpp

@@ -185,6 +185,28 @@ void handleE131Packet(e131_packet_t* p, IPAddress clientIP, byte protocol){
         }
         break;
       }
+      case DMX_MODE_MULTIPLE_RGBW:   //Implementation of RGBW leds
+      {
+        const byte dmxChannelsperLed=4;   //4 DMX Channels/Led
+        const byte ledsPerUniverse=128;   //Max.128 leds/Universe      
+        realtimeLock(realtimeTimeoutMs, mde);
+        if (realtimeOverride) return;
+        uint16_t previousLeds, dmxOffset;
+        if (previousUniverses == 0) {
+          if (dmxChannels-DMXAddress < 1) return;
+          dmxOffset = DMXAddress;
+          previousLeds = 0;
+        } else{
+          dmxOffset = (protocol == P_ARTNET) ? 0 : 1;
+          uint16_t ledsInFirstUniverse = (MAX_CHANNELS_PER_UNIVERSE - DMXAddress) / dmxChannelsperLed;   
+          previousLeds = ledsInFirstUniverse + (previousUniverses - 1) * ledsPerUniverse; // Max leds/universe is only 128 with 4 Ch./led
+        }
+        uint16_t ledsTotal = previousLeds + (dmxChannels - dmxOffset +1) / dmxChannelsperLed;
+        for (uint16_t i = previousLeds; i < ledsTotal; i++) {
+          setRealtimePixel(i, e131_data[dmxOffset++], e131_data[dmxOffset++], e131_data[dmxOffset++], e131_data[dmxOffset++]);
+        }
+        break;         
+      }
     default:
       DEBUG_PRINTLN(F("unknown E1.31 DMX mode"));
       return;  // nothing to do

wled00/set.cpp

@@ -152,7 +152,7 @@ void handleSettingsSet(AsyncWebServerRequest *request, byte subPage)
     t = request->arg(F("DA")).toInt();
     if (t >= 0  && t <= 510) DMXAddress = t;
     t = request->arg(F("DM")).toInt();
-    if (t >= DMX_MODE_DISABLED && t <= DMX_MODE_MULTIPLE_DRGB) DMXMode = t;
+    if (t >= DMX_MODE_DISABLED && t <= DMX_MODE_MULTIPLE_RGBW) DMXMode = t;
     t = request->arg(F("ET")).toInt();
     if (t > 99  && t <= 65000) realtimeTimeoutMs = t;
     arlsForceMaxBri = request->hasArg(F("FB"));

wled00/wled.h

@@ -262,7 +262,7 @@ WLED_GLOBAL uint16_t e131ProxyUniverse _INIT(0);                  // output this
 #endif
 WLED_GLOBAL uint16_t e131Universe _INIT(1);                       // settings for E1.31 (sACN) protocol (only DMX_MODE_MULTIPLE_* can span over consequtive universes)
 WLED_GLOBAL uint16_t e131Port _INIT(5568);                        // DMX in port. E1.31 default is 5568, Art-Net is 6454
-WLED_GLOBAL byte DMXMode _INIT(DMX_MODE_MULTIPLE_RGB);            // DMX mode (s.a.)
+WLED_GLOBAL byte DMXMode _INIT(DMX_MODE_MULTIPLE_RGBW-1);            // DMX mode (s.a.)
 WLED_GLOBAL uint16_t DMXAddress _INIT(1);                         // DMX start address of fixture, a.k.a. first Channel [for E1.31 (sACN) protocol]
 WLED_GLOBAL byte DMXOldDimmer _INIT(0);                           // only update brightness on change
 WLED_GLOBAL byte e131LastSequenceNumber[E131_MAX_UNIVERSE_COUNT]; // to detect packet loss