Added custom per-LED mapping

CHANGELOG.md

@@ -2,6 +2,11 @@
 
 ### Development versions after 0.9.1 release
 
+#### Build 2003211
+
+- Added custom mapping compile define to FX_fcn.h
+- Merged pull request #784 by @TravisDean: Fixed initialization bug when toggling skip first
+- Added link to youtube videos by Room31 to readme
 
 #### Build 2003141
 

readme.md

@@ -50,6 +50,10 @@ DrZzs has made some excellent video guides:
 
 If you'd rather read, here is a very [detailed step-by-step beginner tutorial](https://tynick.com/blog/11-03-2019/getting-started-with-wled-on-esp8266/) by tynick!  
 
+Russian speakers, check out the videos by Room31:
+[WLED Firmware Overview: Interface and Settings](https://youtu.be/h7lKsczEI7E)  
+[ESP8266 based LED controller for WS2812b strip. WLED Firmware + OpenHAB](https://youtu.be/K4ioTt3XvGc)  
+
 ### Other
 
 Licensed under the MIT license  

wled00/FX_fcn.cpp

@@ -27,6 +27,23 @@
 #include "FX.h"
 #include "palettes.h"
 
+//enable custom per-LED mapping. This can allow for better effects on matrices or special displays
+//#define WLED_CUSTOM_LED_MAPPING
+
+#ifdef WLED_CUSTOM_LED_MAPPING
+//this is just an example (30 LEDs). It will first set all even, then all uneven LEDs.
+const uint16_t customMappingTable[] = {
+  0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28,
+  1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29};
+
+//another example. Switches direction every 5 LEDs.
+/*const uint16_t customMappingTable[] = {
+  0, 1, 2, 3, 4, 9, 8, 7, 6, 5, 10, 11, 12, 13, 14,
+  19, 18, 17, 16, 15, 20, 21, 22, 23, 24, 29, 28, 27, 26, 25};*/
+
+const uint16_t customMappingSize = sizeof(customMappingTable)/sizeof(uint16_t); //30 in example
+#endif
+
 void WS2812FX::init(bool supportWhite, uint16_t countPixels, bool skipFirst)
 {
   if (supportWhite == _useRgbw && countPixels == _length) return;
@@ -142,10 +159,16 @@ void WS2812FX::setPixelColor(uint16_t i, byte r, byte g, byte b, byte w)
         int16_t indexSet = realIndex + (reversed ? -j : j);
         int16_t indexSetRev = indexSet;
         if (reverseMode) indexSetRev = _length - 1 - indexSet;
+        #ifdef WLED_CUSTOM_LED_MAPPING
+        if (indexSet < customMappingSize) indexSet = customMappingTable[indexSet];
+        #endif
         if (indexSetRev >= SEGMENT.start && indexSetRev < SEGMENT.stop) bus->SetPixelColor(indexSet + skip, col);
       }
     } else { //live data, etc.
       if (reverseMode) i = _length - 1 - i;
+      #ifdef WLED_CUSTOM_LED_MAPPING
+      if (i < customMappingSize) i = customMappingTable[i];
+      #endif
       bus->SetPixelColor(i + skip, col);
     }
     if (skip && i == 0) {
@@ -430,7 +453,13 @@ uint32_t WS2812FX::getColor(void) {
 
 uint32_t WS2812FX::getPixelColor(uint16_t i)
 {
-  i = realPixelIndex(i) + (_skipFirstMode ? LED_SKIP_AMOUNT : 0);
+  i = realPixelIndex(i);
+  
+  #ifdef WLED_CUSTOM_LED_MAPPING
+  if (i < customMappingSize) i = customMappingTable[i];
+  #endif
+
+  if (_skipFirstMode) i += LED_SKIP_AMOUNT;
   
   if (_cronixieMode)
   {

wled00/html_settings.h

@@ -284,9 +284,9 @@ Send notifications twice: <input type="checkbox" name="S2">
 <h3>Realtime</h3>
 Receive UDP realtime: <input type="checkbox" name="RD"><br><br>
 <i>E1.31 (sACN)</i><br>
-Skip out-of-sequence packets (freeze instead of flicker): <input type="checkbox" name="ES"><br>
 Use E1.31 multicast: <input type="checkbox" name="EM"><br>
 E1.31 start universe: <input name="EU" type="number" min="1" max="63999" required><br>
+Skip out-of-sequence packets: <input type="checkbox" name="ES"><br>
 <i>Reboot required.</i> Check out <a href="https://github.com/ahodges9/LedFx" target="_blank">LedFx</a>!<br>
 DMX start address: <input name="DA" type="number" min="1" max="510" value="1" required><br>
 DMX mode:

wled00/wled00.ino

@@ -119,7 +119,7 @@
 #endif
 
 //version code in format yymmddb (b = daily build)
-#define VERSION 2003141
+#define VERSION 2003211
 
 char versionString[] = "0.9.1";