CCT (color white balance support)

wled00/FX.h

@@ -247,7 +247,7 @@ class WS2812FX {
   
   // segment parameters
   public:
-    typedef struct Segment { // 29 (32 in memory?) bytes
+    typedef struct Segment { // 30 (33 in memory?) bytes
       uint16_t start;
       uint16_t stop; //segment invalid if stop == 0
       uint16_t offset;
@@ -259,6 +259,7 @@ class WS2812FX {
       uint8_t grouping, spacing;
       uint8_t opacity;
       uint32_t colors[NUM_COLORS];
+      uint8_t cct;
       char *name;
       bool setColor(uint8_t slot, uint32_t c, uint8_t segn) { //returns true if changed
         if (slot >= NUM_COLORS || segn >= MAX_NUM_SEGMENTS) return false;

wled00/FX_fcn.cpp

@@ -220,6 +220,17 @@ void WS2812FX::setPixelColor(uint16_t i, byte r, byte g, byte b, byte w)
     uint16_t realIndex = realPixelIndex(i);
     uint16_t len = SEGMENT.length();
 
+    // determine if we can do white balance
+    int16_t cct = -1;
+    for (uint8_t b = 0; b < busses.getNumBusses(); b++) {
+      Bus *bus = busses.getBus(b);
+      if (bus == nullptr || !bus->containsPixel(realIndex)) continue;
+      if (allowCCT || bus->getType() == TYPE_ANALOG_2CH || bus->getType() == TYPE_ANALOG_5CH) {
+        cct = SEGMENT.cct;
+        break;
+      }
+    }
+
     for (uint16_t j = 0; j < SEGMENT.grouping; j++) {
       uint16_t indexSet = realIndex + (IS_REVERSE ? -j : j);
       if (indexSet >= SEGMENT.start && indexSet < SEGMENT.stop) {
@@ -230,14 +241,14 @@ void WS2812FX::setPixelColor(uint16_t i, byte r, byte g, byte b, byte w)
           if (indexMir >= SEGMENT.stop) indexMir -= len;
 
           if (indexMir < customMappingSize) indexMir = customMappingTable[indexMir];
-          busses.setPixelColor(indexMir, col);
+          busses.setPixelColor(indexMir, col, cct);
         }
         /* offset/phase */
         indexSet += SEGMENT.offset;
         if (indexSet >= SEGMENT.stop) indexSet -= len;
 
         if (indexSet < customMappingSize) indexSet = customMappingTable[indexSet];
-        busses.setPixelColor(indexSet, col);
+        busses.setPixelColor(indexSet, col, cct);
       }
     }
   } else { //live data, etc.
@@ -623,6 +634,7 @@ void WS2812FX::resetSegments() {
   _segments[0].setOption(SEG_OPTION_SELECTED, 1);
   _segments[0].setOption(SEG_OPTION_ON, 1);
   _segments[0].opacity = 255;
+  _segments[0].cct = 128;
 
   for (uint16_t i = 1; i < MAX_NUM_SEGMENTS; i++)
   {
@@ -630,6 +642,7 @@ void WS2812FX::resetSegments() {
     _segments[i].grouping = 1;
     _segments[i].setOption(SEG_OPTION_ON, 1);
     _segments[i].opacity = 255;
+    _segments[i].cct = 128;
     _segments[i].speed = DEFAULT_SPEED;
     _segments[i].intensity = DEFAULT_INTENSITY;
     _segment_runtimes[i].reset();

wled00/bus_manager.h

@@ -10,6 +10,9 @@
 #include "bus_wrapper.h"
 #include <Arduino.h>
 
+//color.cpp
+uint32_t colorBalanceFromKelvin(uint16_t kelvin, uint32_t rgb);
+
 // enable additional debug output
 #ifdef WLED_DEBUG
   #ifndef ESP8266
@@ -70,66 +73,35 @@ class Bus {
       _start = start;
     };
 
+    virtual ~Bus() {} //throw the bus under the bus
+
     virtual void     show() {}
     virtual bool     canShow() { return true; }
-
     virtual void     setPixelColor(uint16_t pix, uint32_t c) {};
-
+    virtual void     setPixelColor(uint16_t pix, uint32_t c, uint8_t cct) {};
-  virtual void setBrightness(uint8_t b) {};
-
     virtual uint32_t getPixelColor(uint16_t pix) { return 0; };
-
+    virtual void     setBrightness(uint8_t b) {};
     virtual void     cleanup() {};
-
-  virtual ~Bus() { //throw the bus under the bus
-  }
-
     virtual uint8_t  getPins(uint8_t* pinArray) { return 0; }
-
+    virtual uint16_t getLength() { return 1; }
-  inline uint16_t getStart() {
-    return _start;
-  }
-
-  inline void setStart(uint16_t start) {
-    _start = start;
-  }
-
-  virtual uint16_t getLength() {
-    return 1;
-  }
-
     virtual void     setColorOrder() {}
+    virtual uint8_t  getColorOrder() { return COL_ORDER_RGB; }
+    virtual uint8_t  skippedLeds() { return 0; }
 
-  virtual uint8_t getColorOrder() {
+    inline uint16_t  getStart() { return _start; }
-    return COL_ORDER_RGB;
+    inline void      setStart(uint16_t start) { _start = start; }
-  }
+    inline uint8_t   getType() { return _type; }
-
+    inline bool      isOk() { return _valid; }
-  virtual bool isRgbw() {
+    inline bool      isOffRefreshRequired() { return _needsRefresh; }
-    return false;
+    inline bool      containsPixel(uint16_t pix) { return pix >= _start; }
-  }
-
-  virtual uint8_t skippedLeds() {
-    return 0;
-  }
-
-  inline uint8_t getType() {
-    return _type;
-  }
-
-  inline bool isOk() {
-    return _valid;
-  }
 
+    virtual bool isRgbw() { return false; }
     static  bool isRgbw(uint8_t type) {
       if (type == TYPE_SK6812_RGBW || type == TYPE_TM1814) return true;
       if (type > TYPE_ONOFF && type <= TYPE_ANALOG_5CH && type != TYPE_ANALOG_3CH) return true;
       return false;
     }
 
-  inline bool isOffRefreshRequired() {
-    return _needsRefresh;
-  }
-
     bool reversed = false;
 
   protected:
@@ -190,6 +162,11 @@ class BusDigital : public Bus {
     PolyBus::setPixelColor(_busPtr, _iType, pix, c, _colorOrder);
   }
 
+  void setPixelColor(uint16_t pix, uint32_t c, uint8_t cct) {
+    c = colorBalanceFromKelvin(2000+(cct<<5), c); // color correction from CCT
+    setPixelColor(pix, c);
+  }
+
   uint32_t getPixelColor(uint16_t pix) {
     if (reversed) pix = _len - pix -1;
     else pix += _skip;
@@ -285,6 +262,34 @@ class BusPwm : public Bus {
     _valid = true;
   };
 
+  void setPixelColor(uint16_t pix, uint32_t c, uint8_t cct) {
+    if (pix != 0 || !_valid) return; //only react to first pixel
+    c = colorBalanceFromKelvin(2000+(cct<<5), c); // color correction from CCT (w remains unchanged)
+    uint8_t r = c >> 16;
+    uint8_t g = c >>  8;
+    uint8_t b = c      ;
+    uint8_t w = c >> 24;
+
+    switch (_type) {
+      case TYPE_ANALOG_1CH: //one channel (white), use highest RGBW value
+        _data[0] = max(r, max(g, max(b, w)));
+        break;
+      case TYPE_ANALOG_2CH: //warm white + cold white
+        // perhaps a non-linear adjustment would be in order. need to test
+        _data[1] = (w * cct) / 255;
+        _data[0] = 255 - _data[1]; // or (w * (255-cct)) / 255;
+        break;
+      case TYPE_ANALOG_5CH: //RGB + warm white + cold white
+        // perhaps a non-linear adjustment would be in order. need to test
+        _data[4] = (w * cct) / 255; w = 255 - w; // or (w * (255-cct)) / 255;
+      case TYPE_ANALOG_4CH: //RGBW
+        _data[3] = w;
+      case TYPE_ANALOG_3CH: //standard dumb RGB
+        _data[0] = r; _data[1] = g; _data[2] = b;
+        break;
+    }
+  }
+
   void setPixelColor(uint16_t pix, uint32_t c) {
     if (pix != 0 || !_valid) return; //only react to first pixel
     uint8_t r = c >> 16;
@@ -295,14 +300,11 @@ class BusPwm : public Bus {
     switch (_type) {
       case TYPE_ANALOG_1CH: //one channel (white), use highest RGBW value
         _data[0] = max(r, max(g, max(b, w))); break;
-      
+      case TYPE_ANALOG_2CH: //warm white + cold white
-      case TYPE_ANALOG_2CH: //warm white + cold white, we'll need some nice handling here, for now just R+G channels
       case TYPE_ANALOG_3CH: //standard dumb RGB
-      case TYPE_ANALOG_4CH: //RGBW
+      case TYPE_ANALOG_4CH: //standard dumb RGBW
       case TYPE_ANALOG_5CH: //we'll want the white handling from 2CH here + RGB
         _data[0] = r; _data[1] = g; _data[2] = b; _data[3] = w; _data[4] = 0; break;
-
-      default: return;
     }
   }
 
@@ -417,6 +419,11 @@ class BusNetwork : public Bus {
     if (_rgbw) _data[offset+3] = 0xFF & (c >> 24);
   }
 
+  void setPixelColor(uint16_t pix, uint32_t c, uint8_t cct) {
+    c = colorBalanceFromKelvin(2000+(cct<<5), c); // color correction from CCT
+    setPixelColor(pix, c);
+  }
+
   uint32_t getPixelColor(uint16_t pix) {
     if (!_valid || pix >= _len) return 0;
     uint16_t offset = pix * _UDPchannels;
@@ -538,12 +545,13 @@ class BusManager {
     }
   }
 
-  void setPixelColor(uint16_t pix, uint32_t c) {
+  void setPixelColor(uint16_t pix, uint32_t c, int16_t cct=-1) {
     for (uint8_t i = 0; i < numBusses; i++) {
       Bus* b = busses[i];
       uint16_t bstart = b->getStart();
       if (pix < bstart || pix >= bstart + b->getLength()) continue;
-      busses[i]->setPixelColor(pix - bstart, c);
+      if (cct<0) busses[i]->setPixelColor(pix - bstart, c);       // no white balance
+      else       busses[i]->setPixelColor(pix - bstart, c, cct);  // do white balance
     }
   }
 

wled00/cfg.cpp

@@ -84,6 +84,7 @@ bool deserializeConfig(JsonObject doc, bool fromFS) {
   CJSON(strip.ablMilliampsMax, hw_led[F("maxpwr")]);
   CJSON(strip.milliampsPerLed, hw_led[F("ledma")]);
   CJSON(strip.rgbwMode, hw_led[F("rgbwm")]);
+  CJSON(allowCCT, hw_led["cct"]);
 
   JsonArray ins = hw_led["ins"];
 
@@ -530,6 +531,7 @@ void serializeConfig() {
   hw_led[F("maxpwr")] = strip.ablMilliampsMax;
   hw_led[F("ledma")] = strip.milliampsPerLed;
   hw_led[F("rgbwm")] = strip.rgbwMode;
+  hw_led["cct"] = allowCCT;
 
   JsonArray hw_led_ins = hw_led.createNestedArray("ins");
 
@@ -546,7 +548,7 @@ void serializeConfig() {
     ins[F("order")] = bus->getColorOrder();
     ins["rev"] = bus->reversed;
     ins[F("skip")] = bus->skippedLeds();
-    ins["type"] = bus->getType() & 0x7F;;
+    ins["type"] = bus->getType() & 0x7F;
     ins["ref"] = bus->isOffRefreshRequired();
     ins[F("rgbw")] = bus->isRgbw();
   }

wled00/data/index.css

@@ -467,6 +467,22 @@ img {
 	z-index: -1;
 }
 
+#rwrap .sliderdisplay,
+#gwrap .sliderdisplay,
+#bwrap .sliderdisplay,
+#wwrap .sliderdisplay,
+#wbal .sliderdisplay {
+	height: 28px;
+	top: 0; bottom: 0;
+	left: 0; right: 0;
+	/*border: 1px solid var(--c-b);*/
+}
+#rwrap .sliderdisplay { background: linear-gradient(90deg, #000 0%, #f00); }
+#gwrap .sliderdisplay { background: linear-gradient(90deg, #000 0%, #0f0); }
+#bwrap .sliderdisplay { background: linear-gradient(90deg, #000 0%, #00f); }
+#wwrap .sliderdisplay { background: linear-gradient(90deg, #000 0%, #fff); }
+#wbal .sliderdisplay  { background: linear-gradient(90deg, #ff8f1f 0%, #fff 50%, #d4e0ff); }
+
 .sliderbubble {
     width: 36px;
     line-height: 24px;
@@ -492,6 +508,14 @@ input[type=range] {
 	background-color: transparent;
 	cursor: pointer;
 }
+#rwrap input[type=range],
+#gwrap input[type=range],
+#bwrap input[type=range],
+#wwrap input[type=range],
+#wbal input[type=range] {
+	width: 252px;
+	margin: 0;
+}
 input[type=range]:focus {
 	outline: none;
 }
@@ -527,8 +551,24 @@ input[type=range]:active + .sliderbubble {
 	display: inline;
 	transform: translateX(-50%);
 }
-
+#rwrap input[type=range]::-webkit-slider-thumb,
-#wwrap {
+#gwrap input[type=range]::-webkit-slider-thumb,
+#bwrap input[type=range]::-webkit-slider-thumb,
+#wwrap input[type=range]::-webkit-slider-thumb,
+#wbal input[type=range]::-webkit-slider-thumb {
+	height: 18px;
+	width: 18px;
+	border: 2px solid #000;
+	margin-top: 5px;
+}
+#rwrap input[type=range]::-moz-range-thumb,
+#gwrap input[type=range]::-moz-range-thumb,
+#bwrap input[type=range]::-moz-range-thumb,
+#wwrap input[type=range]::-moz-range-thumb,
+#wbal input[type=range]::-moz-range-thumb {
+	border: 2px solid var(--c-1);
+}
+#wwrap, #wbal {
 	display: none;
 }
 
@@ -537,6 +577,14 @@ input[type=range]:active + .sliderbubble {
 	width: 240px;
 	position: relative;
 }
+#rwrap .sliderwrap,
+#gwrap .sliderwrap,
+#bwrap .sliderwrap,
+#wwrap .sliderwrap,
+#wbal .sliderwrap {
+	width: 260px;
+	margin: 10px 0 0;
+}
 
 .sbs {
 	margin: 0px -20px 5px -6px;

wled00/data/index.htm

@@ -47,22 +47,29 @@
 		<div id="picker" class="noslide"></div>
 		<div id="rgbwrap">
 			<div class="sliderwrap il">
-				<input id="sliderR" class="noslide" onchange="fromRgb()" oninput="updateTrail(this,1)" max="255" min="0" type="range" value="128" />
+				<input id="sliderR" class="noslide" onchange="fromRgb()" max="255" min="0" type="range" value="128" />
 				<div class="sliderdisplay"></div>
 			</div><br>
 			<div class="sliderwrap il">
-				<input id="sliderG" class="noslide" onchange="fromRgb()" oninput="updateTrail(this,2)" max="255" min="0" type="range" value="128" />
+				<input id="sliderG" class="noslide" onchange="fromRgb()" max="255" min="0" type="range" value="128" />
 				<div class="sliderdisplay"></div>
 			</div><br>
 			<div class="sliderwrap il">
-				<input id="sliderB" class="noslide" onchange="fromRgb()" oninput="updateTrail(this,3)" max="255" min="0" type="range" value="128" />
+				<input id="sliderB" class="noslide" onchange="fromRgb()" max="255" min="0" type="range" value="128" />
 				<div class="sliderdisplay"></div>
 			</div><br>
 		</div>
 		<div id="wwrap">
 			<p class="labels">White channel</p>
 			<div class="sliderwrap il">
-				<input id="sliderW" class="noslide" onchange="setColor(0)" oninput="updateTrail(this)" max="255" min="0" type="range" value="128" />
+				<input id="sliderW" class="noslide" onchange="setColor(0)" max="255" min="0" type="range" value="128" />
+				<div class="sliderdisplay"></div>
+			</div>
+		</div>
+		<div id="wbal">
+			<p class="labels">White balance</p>
+			<div class="sliderwrap il">
+				<input id="sliderA" class="noslide" onchange="setBalance(this.value)" max="255" min="0" type="range" value="128" />
 				<div class="sliderdisplay"></div>
 			</div>
 		</div>
@@ -98,7 +105,7 @@
 					<label class="check schkl">
 						&nbsp;
 						<input type="radio" value="${palettes[i].id}" name="palette" onChange="setPalette()">
-						<span class="checkmark schk"></span>
+						<span class="radiomark schk"></span>
 					</label>
 					<div class="lstIcontent">
 						<span class="lstIname">

wled00/data/index.js

@@ -51,7 +51,7 @@ var cpick = new iro.ColorPicker("#picker", {
       options: {
         sliderType: 'value'
       }
-    },
+    }/*,
     {
       component: iro.ui.Slider,
       options: {
@@ -59,7 +59,7 @@ var cpick = new iro.ColorPicker("#picker", {
         minTemperature: 2100,
         maxTemperature: 10000
       }
-    }
+    }*/
   ]
 });
 
@@ -854,21 +854,14 @@ function loadNodes()
 	});
 }
 
-function updateTrail(e, slidercol)
+function updateTrail(e)
 {
 	if (e==null) return;
 	var max = e.hasAttribute('max') ? e.attributes.max.value : 255;
 	var perc = e.value * 100 / max;
 	perc = parseInt(perc);
   if (perc < 50) perc += 2;
-	var scol;
+	var val = `linear-gradient(90deg, var(--c-f) ${perc}%, var(--c-4) ${perc}%)`;
-	switch (slidercol) {
-	case 1: scol = "#f00"; break;
-	case 2: scol = "#0f0"; break;
-	case 3: scol = "#00f"; break;
-	default: scol = "var(--c-f)";
-	}
-	var val = `linear-gradient(90deg, ${scol} ${perc}%, var(--c-4) ${perc}%)`;
 	e.parentNode.getElementsByClassName('sliderdisplay')[0].style.background = val;
 }
 
@@ -939,8 +932,8 @@ function updateUI()
 	updateTrail(d.getElementById('sliderBri'));
 	updateTrail(d.getElementById('sliderSpeed'));
 	updateTrail(d.getElementById('sliderIntensity'));
-	updateTrail(d.getElementById('sliderW'));
+	d.getElementById('wwrap').style.display = (isRgbw) ? "block":"none";
-	if (isRgbw) d.getElementById('wwrap').style.display = "block";
+	d.getElementById("wbal").style.display = (lastinfo.leds.cct) ? "block":"none";
 
 	updatePA();
 	updateHex();
@@ -1023,6 +1016,7 @@ function readState(s,command=false) {
     selectSlot(csel);
   }
   d.getElementById('sliderW').value = whites[csel];
+  if (i.cct && i.cct>=0) d.getElementById("sliderA").value = i.cct;
 
   d.getElementById('sliderSpeed').value = i.sx;
   d.getElementById('sliderIntensity').value = i.ix;
@@ -1560,6 +1554,11 @@ function setSegBri(s){
 	requestJson(obj);
 }
 
+function setBalance(b)
+{
+	var obj = {"seg": {"cct": parseInt(b)}};
+	requestJson(obj);
+}
 function setX(ind = null) {
 	if (ind === null) {
 		ind = parseInt(d.querySelector('#fxlist input[name="fx"]:checked').value);
@@ -1723,7 +1722,6 @@ function selectSlot(b) {
 	cd[csel].style.width="50px";
 	cpick.color.set(cd[csel].style.backgroundColor);
 	d.getElementById('sliderW').value = whites[csel];
-	updateTrail(d.getElementById('sliderW'));
 	updateHex();
 	updateRgb();
 	redrawPalPrev();
@@ -1748,12 +1746,9 @@ function pC(col)
 function updateRgb()
 {
 	var col = cpick.color.rgb;
-	var s = d.getElementById('sliderR');
+	d.getElementById('sliderR').value = col.r;
-	s.value = col.r; updateTrail(s,1);
+	d.getElementById('sliderG').value = col.g;
-	s = d.getElementById('sliderG');
+	d.getElementById('sliderB').value = col.b;
-	s.value = col.g; updateTrail(s,2);
-	s = d.getElementById('sliderB');
-	s.value = col.b; updateTrail(s,3);
 }
 
 function updateHex()

wled00/data/settings_leds.htm

@@ -247,8 +247,8 @@
       gId('m0').innerHTML = memu;
       bquot = memu / maxM * 100;
       gId('dbar').style.background = `linear-gradient(90deg, ${bquot > 60 ? (bquot > 90 ? "red":"orange"):"#ccc"} 0 ${bquot}%%, #444 ${bquot}%% 100%%)`;
-      gId('ledwarning').style.display = (sLC > maxPB || maxLC > 800 || bquot > 80) ? 'inline':'none';
+      gId('ledwarning').style.display = (maxLC > Math.min(maxPB,800) || bquot > 80) ? 'inline':'none';
-      gId('ledwarning').style.color = (sLC > maxPB || maxLC > maxPB || bquot > 100) ? 'red':'orange';
+      gId('ledwarning').style.color = (maxLC > Math.max(maxPB,800) || bquot > 100) ? 'red':'orange';
       gId('wreason').innerHTML = (bquot > 80) ? "80% of max. LED memory" +(bquot>100 ? ` (<b>ERROR: Using over ${maxM}B!</b>)` : "") : "800 LEDs per output";
       // calculate power
       var val = Math.ceil((100 + sPC * laprev)/500)/2;
@@ -389,11 +389,71 @@ ${i+1}:
       req.send(formData);
       d.Sf.data.value = '';
       return false;
+    }
+    // https://stackoverflow.com/questions/7346563/loading-local-json-file
+    function loadCfg(o) {
+      var f, fr;
+
+      if (typeof window.FileReader !== 'function') {
+        alert("The file API isn't supported on this browser yet.");
+        return;
+      }
+
+      if (!o.files) {
+        alert("This browser doesn't seem to support the `files` property of file inputs.");
+      } else if (!o.files[0]) {
+        alert("Please select a JSON file before clicking 'Apply'");
+      } else {
+        f = o.files[0];
+        fr = new FileReader();
+        fr.onload = receivedText;
+        fr.readAsText(f);
+      }
+      o.value = '';
+
+      function receivedText(e) {
+        let lines = e.target.result;
+        var c = JSON.parse(lines); 
+        if (c.hw) {
+          if (c.hw.led) {
+            for (var i=0; i<10; i++) addLEDs(-1);
+            var l = c.hw.led;
+            l.ins.forEach((v,i,a)=>{
+              addLEDs(1);
+              for (var j=0; j<v.pin.length; j++) d.getElementsByName(`L${j}${i}`)[0].value = v.pin[j];
+              d.getElementsByName("LT"+i)[0].value = v.type;
+              d.getElementsByName("LS"+i)[0].value = v.start;
+              d.getElementsByName("LC"+i)[0].value = v.len;
+              d.getElementsByName("CO"+i)[0].value = v.order;
+              d.getElementsByName("SL"+i)[0].checked = v.skip;
+              d.getElementsByName("RF"+i)[0].checked = v.ref;
+              d.getElementsByName("CV"+i)[0].checked = v.rev;
+            });
+          }
+          if (c.hw.btn) {
+            var b = c.hw.btn;
+            if (Array.isArray(b.ins)) gId("btns").innerHTML = "";
+            b.ins.forEach((v,i,a)=>{
+              addBtn(i,v.pin[0],v.type);
+            });
+            d.getElementsByName("TT")[0].value = b.tt;
+          }
+          if (c.hw.ir) {
+            d.getElementsByName("IR")[0].value = c.hw.ir.pin;
+            d.getElementsByName("IT")[0].value = c.hw.ir.type;
+          }
+          if (c.hw.relay) {
+            d.getElementsByName("RL")[0].value = c.hw.relay.pin;
+            d.getElementsByName("RM")[0].checked = c.hw.relay.inv;
+          }
+          UI();
+        }
+      }
     }
 		function GetV()
 		{
       //values injected by server while sending HTML
-      //d.um_p=[6,7,8,9,10,11,1];bLimits(3,4096,4000,1664);d.Sf.MS.checked=1;addLEDs(1);d.Sf.L00.value=2;d.Sf.LC0.value=30;d.Sf.LT0.value=22;d.Sf.CO0.value=0;d.Sf.LS0.value=15;d.Sf.CV0.checked=1;d.Sf.SL0.checked=0;addLEDs(1);d.Sf.L01.value=10;d.Sf.L11.value=10;d.Sf.L21.value=1;d.Sf.L31.value=10;d.Sf.LC1.value=60;d.Sf.LT1.value=80;d.Sf.CO1.value=1;d.Sf.LS1.value=0;d.Sf.CV1.checked=0;d.Sf.SL1.checked=0;d.Sf.MA.value=850;d.Sf.LA.value=0;d.Sf.CA.value=56;d.Sf.AW.value=3;d.Sf.BO.checked=1;d.Sf.BP.value=80;d.Sf.GB.checked=0;d.Sf.GC.checked=1;d.Sf.TF.checked=1;d.Sf.TD.value=700;d.Sf.PF.checked=0;d.Sf.BF.value=100;d.Sf.TB.value=0;d.Sf.TL.value=60;d.Sf.TW.value=0;d.Sf.PB.selectedIndex=0;d.Sf.RL.value=12;d.Sf.RM.checked=1;addBtn(0,0,0);addBtn(1,-1,0);d.Sf.TT.value=32;d.Sf.IR.value=-1;d.Sf.IT.value=0;
+      //d.um_p=[6,7,8,9,10,11,14,15,13,1,21,19,22,25,26,27,5,23,18,17];bLimits(10,2048,64000,8192);d.Sf.MS.checked=1;d.Sf.CCT.checked=0;addLEDs(1);d.Sf.L00.value=192;d.Sf.L10.value=168;d.Sf.L20.value=0;d.Sf.L30.value=61;d.Sf.LC0.value=421;d.Sf.LT0.value=80;d.Sf.CO0.value=1;d.Sf.LS0.value=0;d.Sf.CV0.checked=0;d.Sf.SL0.checked=0;d.Sf.RF0.checked=0;d.Sf.MA.value=850;d.Sf.LA.value=0;d.Sf.CA.value=127;d.Sf.AW.value=3;d.Sf.BO.checked=0;d.Sf.BP.value=0;d.Sf.GB.checked=0;d.Sf.GC.checked=1;d.Sf.TF.checked=1;d.Sf.TD.value=700;d.Sf.PF.checked=1;d.Sf.BF.value=100;d.Sf.TB.value=0;d.Sf.TL.value=60;d.Sf.TW.value=1;d.Sf.PB.selectedIndex=0;d.Sf.RL.value=-1;d.Sf.RM.checked=1;addBtn(0,-1,0);addBtn(1,-1,0);addBtn(2,-1,0);addBtn(3,-1,0);d.Sf.TT.value=32;d.Sf.IR.value=-1;d.Sf.IT.value=8;
     }
 	</script>
 	<style>
@@ -448,6 +508,7 @@ ${i+1}:
     <hr style="width:260px">
     Make a segment for each output: <input type="checkbox" name="MS"> <br>
     Custom bus start indices: <input type="checkbox" onchange="tglSi(this.checked)" id="si"> <br>
+    Allow WB correction:  <input type="checkbox" name="CCT"> <br>
     <hr style="width:260px">
     <div id="btns"></div>
     Touch threshold: <input type="number" class="s" min="0" max="100" name="TT" required><br>
@@ -506,7 +567,10 @@ ${i+1}:
         <option value=3>Dual</option>
         <option value=4>Legacy</option>
       </select>
-    <br></span><hr>
+    <br></span>
+    <hr style="width:260px">
+    <div id="cfg">Config template: <input type="file" name="data2" accept=".json"> <input type="button" value="Apply" onclick="loadCfg(d.Sf.data2);"><br></div>
+    <hr>
     <button type="button" onclick="B()">Back</button><button type="submit">Save</button>
 	</form>
 </body>

wled00/set.cpp

@@ -95,6 +95,7 @@ void handleSettingsSet(AsyncWebServerRequest *request, byte subPage)
     uint8_t pins[5] = {255, 255, 255, 255, 255};
 
     autoSegments = request->hasArg(F("MS"));
+    allowCCT = request->hasArg(F("CCT"));
 
     for (uint8_t s = 0; s < WLED_MAX_BUSSES; s++) {
       char lp[4] = "L0"; lp[2] = 48+s; lp[3] = 0; //ascii 0-9 //strip data pin

wled00/wled.h

@@ -270,6 +270,7 @@ WLED_GLOBAL byte bootPreset   _INIT(0);                   // save preset to load
 //if false, only one segment spanning the total LEDs is created,
 //but not on LED settings save if there is more than one segment currently
 WLED_GLOBAL bool autoSegments _INIT(false);
+WLED_GLOBAL bool allowCCT _INIT(false);           //CCT color correction
 
 WLED_GLOBAL byte col[]    _INIT_N(({ 255, 160, 0, 0 }));  // current RGB(W) primary color. col[] should be updated if you want to change the color.
 WLED_GLOBAL byte colSec[] _INIT_N(({ 0, 0, 0, 0 }));      // current RGB(W) secondary color
@@ -508,7 +509,6 @@ WLED_GLOBAL byte timerWeekday[] _INIT_N(({ 255, 255, 255, 255, 255, 255, 255, 25
 WLED_GLOBAL bool blynkEnabled _INIT(false);
 
 //playlists
-WLED_GLOBAL unsigned long presetCycledTime _INIT(0);
 WLED_GLOBAL int16_t currentPlaylist _INIT(-1);
 //still used for "PL=~" HTTP API command
 WLED_GLOBAL byte presetCycCurr _INIT(0);
@@ -637,10 +637,9 @@ WLED_GLOBAL UsermodManager usermods _INIT(UsermodManager());
 #define WLED_WIFI_CONFIGURED (strlen(clientSSID) >= 1 && strcmp(clientSSID, DEFAULT_CLIENT_SSID) != 0)
 #define WLED_MQTT_CONNECTED (mqtt != nullptr && mqtt->connected())
 
-// append new c string to temp buffer efficiently
+//macro to convert F to const
-bool oappend(const char* txt);
+#define SET_F(x)  (const char*)F(x)
-// append new number to temp buffer efficiently
+
-bool oappendi(int i);
 
 class WLED {
 public: