Per strip skip first LED implementation (#1871)

* Per strip "skip first LED".
Moved skip first led into bus manager.

* Update cfg.cpp

* Do not display Skip 1st on analog types

Rename skipFirstLed() to clarify what it does
Remove RGBW override

Co-authored-by: Aircoookie <dev.aircoookie@gmail.com>
Co-authored-by: Aircoookie <cschwinne@gmail.com>

wled00/FX.h

@@ -581,7 +581,7 @@ class WS2812FX {
     }
 
     void
-      finalizeInit(uint16_t countPixels, bool skipFirst),
+      finalizeInit(uint16_t countPixels),
       service(void),
       blur(uint8_t),
       fill(uint32_t),
@@ -813,7 +813,6 @@ class WS2812FX {
     void handle_palette(void);
 
     bool
-      _skipFirstMode,
       _triggered;
 
     mode_ptr _mode[MODE_COUNT]; // SRAM footprint: 4 bytes per element

wled00/FX_fcn.cpp

@@ -61,16 +61,11 @@
 #endif
 
 //do not call this method from system context (network callback)
-void WS2812FX::finalizeInit(uint16_t countPixels, bool skipFirst)
+void WS2812FX::finalizeInit(uint16_t countPixels)
 {
   RESET_RUNTIME;
   _length = countPixels;
-  _skipFirstMode = skipFirst;
-
   _lengthRaw = _length;
-  if (_skipFirstMode) {
-    _lengthRaw += LED_SKIP_AMOUNT;
-  }
 
   //if busses failed to load, add default (FS issue...)
   if (busses.getNumBusses() == 0) {
@@ -204,7 +199,6 @@ void WS2812FX::setPixelColor(uint16_t i, byte r, byte g, byte b, byte w)
     }
   }
   
-  uint16_t skip = _skipFirstMode ? LED_SKIP_AMOUNT : 0;
   if (SEGLEN) {//from segment
 
     //color_blend(getpixel, col, _bri_t); (pseudocode for future blending of segments)
@@ -216,7 +210,6 @@ void WS2812FX::setPixelColor(uint16_t i, byte r, byte g, byte b, byte w)
     }
     uint32_t col = ((w << 24) | (r << 16) | (g << 8) | (b));
 
-    /* Set all the pixels in the group, ensuring _skipFirstMode is honored */
     bool reversed = IS_REVERSE;
     uint16_t realIndex = realPixelIndex(i);
 
@@ -226,22 +219,17 @@ void WS2812FX::setPixelColor(uint16_t i, byte r, byte g, byte b, byte w)
         if (IS_MIRROR) { //set the corresponding mirrored pixel
           uint16_t indexMir = SEGMENT.stop - indexSet + SEGMENT.start - 1;
           if (indexMir < customMappingSize) indexMir = customMappingTable[indexMir];
-          busses.setPixelColor(indexMir + skip, col);
+          busses.setPixelColor(indexMir, col);
         }
         if (indexSet < customMappingSize) indexSet = customMappingTable[indexSet];
-        busses.setPixelColor(indexSet + skip, col);
+        busses.setPixelColor(indexSet, col);
       }
     }
   } else { //live data, etc.
     if (i < customMappingSize) i = customMappingTable[i];
     
     uint32_t col = ((w << 24) | (r << 16) | (g << 8) | (b));
-    busses.setPixelColor(i + skip, col);
+    busses.setPixelColor(i, col);
-  }
-  if (skip && i == 0) {
-    for (uint16_t j = 0; j < skip; j++) {
-      busses.setPixelColor(j, BLACK);
-    }
   }
 }
 
@@ -514,8 +502,6 @@ uint32_t WS2812FX::getPixelColor(uint16_t i)
   i = realPixelIndex(i);
   
   if (i < customMappingSize) i = customMappingTable[i];
-
-  if (_skipFirstMode) i += LED_SKIP_AMOUNT;
   
   if (i >= _lengthRaw) return 0;
   

wled00/bus_manager.h

@@ -17,9 +17,11 @@ struct BusConfig {
   uint16_t start = 0;
   uint8_t colorOrder = COL_ORDER_GRB;
   bool reversed = false;
+  uint8_t skipAmount;
   uint8_t pins[5] = {LEDPIN, 255, 255, 255, 255};
-  BusConfig(uint8_t busType, uint8_t* ppins, uint16_t pstart, uint16_t len = 1, uint8_t pcolorOrder = COL_ORDER_GRB, bool rev = false) {
+  BusConfig(uint8_t busType, uint8_t* ppins, uint16_t pstart, uint16_t len = 1, uint8_t pcolorOrder = COL_ORDER_GRB, bool rev = false, uint8_t skip=0) {
-    type = busType; count = len; start = pstart; colorOrder = pcolorOrder; reversed = rev;
+    type = busType; count = len; start = pstart;
+    colorOrder = pcolorOrder; reversed = rev; skipAmount = skip;
     uint8_t nPins = 1;
     if (type > 47) nPins = 2;
     else if (type > 41 && type < 46) nPins = NUM_PWM_PINS(type);
@@ -51,11 +53,11 @@ class Bus {
 
   virtual uint8_t getPins(uint8_t* pinArray) { return 0; }
 
-  uint16_t getStart() {
+  inline uint16_t getStart() {
     return _start;
   }
 
-  void setStart(uint16_t start) {
+  inline void setStart(uint16_t start) {
     _start = start;
   }
 
@@ -69,14 +71,28 @@ class Bus {
     return COL_ORDER_RGB;
   }
 
-  uint8_t getType() {
+  virtual bool isRgbw() {
+    return false;
+  }
+
+  virtual uint8_t skippedLeds() {
+    return 0;
+  }
+
+  inline uint8_t getType() {
     return _type;
   }
 
-  bool isOk() {
+  inline bool isOk() {
     return _valid;
   }
 
+  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;
+  }
+
   bool reversed = false;
 
   protected:
@@ -99,8 +115,9 @@ class BusDigital : public Bus {
         cleanup(); return;
       }
     }
-    _len = bc.count;
     reversed = bc.reversed;
+    _skip = bc.skipAmount;    //sacrificial pixels
+    _len = bc.count + _skip;
     _iType = PolyBus::getI(bc.type, _pins, nr);
     if (_iType == I_NONE) return;
     _busPtr = PolyBus::create(_iType, _pins, _len);
@@ -109,11 +126,11 @@ class BusDigital : public Bus {
     //Serial.printf("Successfully inited strip %u (len %u) with type %u and pins %u,%u (itype %u)\n",nr, len, type, pins[0],pins[1],_iType);
   };
 
-  void show() {
+  inline void show() {
     PolyBus::show(_busPtr, _iType);
   }
 
-  bool canShow() {
+  inline bool canShow() {
     return PolyBus::canShow(_busPtr, _iType);
   }
 
@@ -130,20 +147,22 @@ class BusDigital : public Bus {
 
   void setPixelColor(uint16_t pix, uint32_t c) {
     if (reversed) pix = _len - pix -1;
+    else pix += _skip;
     PolyBus::setPixelColor(_busPtr, _iType, pix, c, _colorOrder);
   }
 
   uint32_t getPixelColor(uint16_t pix) {
     if (reversed) pix = _len - pix -1;
+    else pix += _skip;
     return PolyBus::getPixelColor(_busPtr, _iType, pix, _colorOrder);
   }
 
-  uint8_t getColorOrder() {
+  inline uint8_t getColorOrder() {
     return _colorOrder;
   }
 
-  uint16_t getLength() {
+  inline uint16_t getLength() {
-    return _len;
+    return _len - _skip;
   }
 
   uint8_t getPins(uint8_t* pinArray) {
@@ -157,7 +176,15 @@ class BusDigital : public Bus {
     _colorOrder = colorOrder;
   }
 
-  void reinit() {
+  inline bool isRgbw() {
+    return (_type == TYPE_SK6812_RGBW || _type == TYPE_TM1814);
+  }
+
+  inline uint8_t skippedLeds() {
+    return _skip;
+  }
+
+  inline void reinit() {
     PolyBus::begin(_busPtr, _iType, _pins);
   }
 
@@ -180,6 +207,7 @@ class BusDigital : public Bus {
   uint8_t _pins[2] = {255, 255};
   uint8_t _iType = I_NONE;
   uint16_t _len = 0;
+  uint8_t _skip = 0;
   void * _busPtr = nullptr;
 };
 
@@ -255,7 +283,7 @@ class BusPwm : public Bus {
     }
   }
 
-  void setBrightness(uint8_t b) {
+  inline void setBrightness(uint8_t b) {
     _bri = b;
   }
 
@@ -265,7 +293,11 @@ class BusPwm : public Bus {
     return numPins;
   }
 
-  void cleanup() {
+  bool isRgbw() {
+    return (_type > TYPE_ONOFF && _type <= TYPE_ANALOG_5CH && _type != TYPE_ANALOG_3CH);
+  }
+
+  inline void cleanup() {
     deallocatePins();
   }
 
@@ -304,7 +336,7 @@ class BusManager {
   };
 
   //utility to get the approx. memory usage of a given BusConfig
-  uint32_t memUsage(BusConfig &bc) {
+  static uint32_t memUsage(BusConfig &bc) {
     uint8_t type = bc.type;
     uint16_t len = bc.count;
     if (type < 32) {
@@ -333,8 +365,7 @@ class BusManager {
     } else {
       busses[numBusses] = new BusPwm(bc);
     }
-    numBusses++;
+    return numBusses++;
-    return numBusses -1;
   }
 
   //do not call this method from system context (network callback)
@@ -358,6 +389,7 @@ class BusManager {
       uint16_t bstart = b->getStart();
       if (pix < bstart || pix >= bstart + b->getLength()) continue;
       busses[i]->setPixelColor(pix - bstart, c);
+      break;
     }
   }
 
@@ -389,14 +421,18 @@ class BusManager {
     return busses[busNr];
   }
 
-  uint8_t getNumBusses() {
+  inline uint8_t getNumBusses() {
     return numBusses;
   }
 
-  static bool isRgbw(uint8_t type) {
+  uint16_t getTotalLength() {
-    if (type == TYPE_SK6812_RGBW || type == TYPE_TM1814) return true;
+    uint16_t len = 0;
-    if (type > TYPE_ONOFF && type <= TYPE_ANALOG_5CH && type != TYPE_ANALOG_3CH) return true;
+    for (uint8_t i=0; i<numBusses; i++ ) len += busses[i]->getLength();
-    return false;
+    return len;
+  }
+
+  static inline bool isRgbw(uint8_t type) {
+    return Bus::isRgbw(type);
   }
 
   //Return true if the strip requires a refresh to stay off.

wled00/bus_wrapper.h

@@ -837,7 +837,7 @@ class PolyBus {
   }
 
   //gives back the internal type index (I_XX_XXX_X above) for the input 
-  static uint8_t getI(uint8_t busType, uint8_t* pins, uint8_t num = 0) {
+  static uint8_t getI(uint8_t busType, uint8_t* pins, uint8_t num = 0, bool rgbwOverride = false) {
     if (!IS_DIGITAL(busType)) return I_NONE;
     if (IS_2PIN(busType)) { //SPI LED chips
       bool isHSPI = false;
@@ -863,7 +863,7 @@ class PolyBus {
       switch (busType) {
         case TYPE_WS2812_RGB:
         case TYPE_WS2812_WWA:
-          return I_8266_U0_NEO_3 + offset;
+          return (rgbwOverride ? I_8266_U0_NEO_4 : I_8266_U0_NEO_3) + offset;
         case TYPE_SK6812_RGBW:
           return I_8266_U0_NEO_4 + offset;
         case TYPE_WS2811_400KHZ:
@@ -877,7 +877,7 @@ class PolyBus {
       switch (busType) {
         case TYPE_WS2812_RGB:
         case TYPE_WS2812_WWA:
-          return I_32_R0_NEO_3 + offset;
+          return (rgbwOverride ? I_32_R0_NEO_3 : I_32_R0_NEO_4) + offset;
         case TYPE_SK6812_RGBW:
           return I_32_R0_NEO_4 + offset;
         case TYPE_WS2811_400KHZ:

wled00/cfg.cpp

@@ -103,7 +103,7 @@ bool deserializeConfig(JsonObject doc, bool fromFS) {
       if (length==0) continue;
       uint8_t colorOrder = (int)elm[F("order")];
       //only use skip from the first strip (this shouldn't have been in ins obj. but remains here for compatibility)
-      if (s==0) skipFirstLed = elm[F("skip")];
+      uint8_t skipFirst = elm[F("skip")];
       uint16_t start = elm[F("start")] | 0;
       if (start >= ledCount) continue;
       //limit length of strip if it would exceed total configured LEDs
@@ -115,11 +115,11 @@ bool deserializeConfig(JsonObject doc, bool fromFS) {
       //refresh is required to remain off if at least one of the strips requires the refresh.
       strip.isOffRefreshRequred |= BusManager::isOffRefreshRequred(ledType);
       s++;
-      BusConfig bc = BusConfig(ledType, pins, start, length, colorOrder, reversed);
+      BusConfig bc = BusConfig(ledType, pins, start, length, colorOrder, reversed, skipFirst);
       mem += busses.memUsage(bc);
       if (mem <= MAX_LED_MEMORY) busses.add(bc);
     }
-    strip.finalizeInit(ledCount, skipFirstLed);
+    strip.finalizeInit(ledCount);
   }
   if (hw_led["rev"]) busses.getBus(0)->reversed = true; //set 0.11 global reversed setting for first bus
 
@@ -488,7 +488,7 @@ void serializeConfig() {
     for (uint8_t i = 0; i < nPins; i++) ins_pin.add(pins[i]);
     ins[F("order")] = bus->getColorOrder();
     ins["rev"] = bus->reversed;
-    ins[F("skip")] = (skipFirstLed && s == 0) ? 1 : 0;
+    ins[F("skip")] = bus->skippedLeds();
     ins["type"] = bus->getType();
   }
 

wled00/data/settings_leds.htm

@@ -235,7 +235,9 @@
           <br>
           <span id="psd${i}">Start:</span> <input type="number" name="LS${i}" min="0" max="8191" value="${lastEnd(i)}" required />&nbsp;
           <div id="dig${i}" style="display:inline">
-          Count: <input type="number" name="LC${i}" min="0" max="${maxPB}" value="1" required oninput="UI()" /><br></div>
+          Count: <input type="number" name="LC${i}" min="0" max="${maxPB}" value="1" required oninput="UI()" /><br>
+          Skip 1<sup>st</sup> LED: <input id="sl${i}" type="checkbox" name="SL${i}">&nbsp;
+          </div>
           Reverse: <input type="checkbox" name="CV${i}"><br>
         </div>`;
         f.insertAdjacentHTML("beforeend", cn);
@@ -338,7 +340,6 @@
 			<option value="2">Linear (never wrap)</option>
 			<option value="3">None (not recommended)</option>
 		</select><br>
-    Skip first LED: <input type="checkbox" name="SL"><br>
     <span class="wc">
       Auto-calculate white channel from RGB:<br>
       <select name="AW">

wled00/set.cpp

@@ -85,7 +85,8 @@ void handleSettingsSet(AsyncWebServerRequest *request, byte subPage)
     //TODO remove all busses, but not in this system call
     //busses->removeAll();
 
-    uint8_t colorOrder, type;
+    strip.isRgbw = false;
+    uint8_t colorOrder, type, skip;
     uint16_t length, start;
     uint8_t pins[5] = {255, 255, 255, 255, 255};
 
@@ -96,6 +97,7 @@ void handleSettingsSet(AsyncWebServerRequest *request, byte subPage)
       char lt[4] = "LT"; lt[2] = 48+s; lt[3] = 0; //strip type
       char ls[4] = "LS"; ls[2] = 48+s; ls[3] = 0; //strip start LED
       char cv[4] = "CV"; cv[2] = 48+s; cv[3] = 0; //strip reverse
+      char sl[4] = "SL"; sl[2] = 48+s; sl[3] = 0; //skip 1st LED
       if (!request->hasArg(lp)) {
         DEBUG_PRINTLN("No data."); break;
       }
@@ -105,8 +107,8 @@ void handleSettingsSet(AsyncWebServerRequest *request, byte subPage)
         pins[i] = (request->arg(lp).length() > 0) ? request->arg(lp).toInt() : 255;
       }
       type = request->arg(lt).toInt();
-      //if (isRgbw(type)) strip.isRgbw = true; //30fps
+      strip.isRgbw = strip.isRgbw || BusManager::isRgbw(type);
-      //strip.isRgbw = true;
+      skip = request->hasArg(sl) ? LED_SKIP_AMOUNT : 0;
       
       if (request->hasArg(lc) && request->arg(lc).toInt() > 0) {
         length = request->arg(lc).toInt();
@@ -118,9 +120,7 @@ void handleSettingsSet(AsyncWebServerRequest *request, byte subPage)
       start = (request->hasArg(ls)) ? request->arg(ls).toInt() : 0;
 
       if (busConfigs[s] != nullptr) delete busConfigs[s];
-      busConfigs[s] = new BusConfig(type, pins, start, length, colorOrder, request->hasArg(cv));
+      busConfigs[s] = new BusConfig(type, pins, start, length, colorOrder, request->hasArg(cv), skip);
-      //if (BusManager::isRgbw(type)) strip.isRgbw = true; //20fps
-      //strip.isRgbw = true;
       doInitBusses = true;
     }
 
@@ -181,7 +181,6 @@ void handleSettingsSet(AsyncWebServerRequest *request, byte subPage)
 
     t = request->arg(F("PB")).toInt();
     if (t >= 0 && t < 4) strip.paletteBlend = t;
-    skipFirstLed = request->hasArg(F("SL"));
     t = request->arg(F("BF")).toInt();
     if (t > 0) briMultiplier = t;
   }

wled00/wled.cpp

@@ -256,7 +256,7 @@ void WLED::loop()
       strip.isRgbw = (strip.isRgbw || BusManager::isRgbw(busConfigs[i]->type));
       delete busConfigs[i]; busConfigs[i] = nullptr;
     }
-    strip.finalizeInit(ledCount, skipFirstLed);
+    strip.finalizeInit(ledCount);
     yield();
     serializeConfig();
   }
@@ -405,7 +405,7 @@ void WLED::beginStrip()
   if (ledCount > MAX_LEDS || ledCount == 0)
     ledCount = 30;
 
-  strip.finalizeInit(ledCount, skipFirstLed);
+  strip.finalizeInit(ledCount);
   strip.setBrightness(0);
   strip.setShowCallback(handleOverlayDraw);
 

wled00/wled.h

@@ -248,7 +248,6 @@ WLED_GLOBAL byte nightlightMode      _INIT(NL_MODE_FADE); // See const.h for ava
 WLED_GLOBAL bool fadeTransition      _INIT(true);   // enable crossfading color transition
 WLED_GLOBAL uint16_t transitionDelay _INIT(750);    // default crossfade duration in ms
 
-WLED_GLOBAL bool skipFirstLed  _INIT(false);        // ignore first LED in strip (useful if you need the LED as signal repeater)
 WLED_GLOBAL byte briMultiplier _INIT(100);          // % of brightness to set (to limit power, if you set it to 50 and set bri to 255, actual brightness will be 127)
 
 // User Interface CONFIG

wled00/wled_eeprom.cpp

@@ -317,7 +317,7 @@ void loadSettingsFromEEPROM()
   notifyMacro = EEPROM.read(2201);
 
   strip.rgbwMode = EEPROM.read(2203);
-  skipFirstLed = EEPROM.read(2204);
+  //skipFirstLed = EEPROM.read(2204);
 
   if (EEPROM.read(2210) || EEPROM.read(2211) || EEPROM.read(2212))
   {

wled00/xml.cpp

@@ -294,6 +294,7 @@ void getSettingsJS(byte subPage, char* dest)
       char lt[4] = "LT"; lt[2] = 48+s; lt[3] = 0; //strip type
       char ls[4] = "LS"; ls[2] = 48+s; ls[3] = 0; //strip start LED
       char cv[4] = "CV"; cv[2] = 48+s; cv[3] = 0; //strip reverse
+      char sl[4] = "SL"; sl[2] = 48+s; sl[3] = 0; //skip 1st LED
       oappend(SET_F("addLEDs(1);"));
       uint8_t pins[5];
       uint8_t nPins = bus->getPins(pins);
@@ -306,6 +307,7 @@ void getSettingsJS(byte subPage, char* dest)
       sappend('v',co,bus->getColorOrder());
       sappend('v',ls,bus->getStart());
       sappend('c',cv,bus->reversed);
+      sappend('c',sl,bus->skippedLeds());
     }
     sappend('v',SET_F("MA"),strip.ablMilliampsMax);
     sappend('v',SET_F("LA"),strip.milliampsPerLed);
@@ -334,7 +336,6 @@ void getSettingsJS(byte subPage, char* dest)
     sappend('v',SET_F("TL"),nightlightDelayMinsDefault);
     sappend('v',SET_F("TW"),nightlightMode);
     sappend('i',SET_F("PB"),strip.paletteBlend);
-    sappend('c',SET_F("SL"),skipFirstLed);
     sappend('v',SET_F("RL"),rlyPin);
     sappend('c',SET_F("RM"),rlyMde);
     sappend('v',SET_F("BT"),btnPin);