wled · DedeHai · Sep 22, 2025 · Sep 11, 2025 · Sep 12, 2025 · Sep 12, 2025
diff --git a/tools/cdata.js b/tools/cdata.js
@@ -143,7 +143,7 @@ async function writeHtmlGzipped(sourceFile, resultFile, page) {
       console.info("Minified and compressed " + sourceFile + " from " + originalLength + " to " + result.length + " bytes");
       const array = hexdump(result);
       let src = singleHeader;
-      src += `const uint16_t PAGE_${page}_L = ${result.length};\n`;
+      src += `const uint16_t PAGE_${page}_length = ${result.length};\n`;
       src += `const uint8_t PAGE_${page}[] PROGMEM = {\n${array}\n};\n\n`;
       console.info("Writing " + resultFile);
       fs.writeFileSync(resultFile, src);
@@ -244,9 +244,22 @@ if (isAlreadyBuilt("wled00/data") && process.argv[2] !== '--force' && process.ar
 
 writeHtmlGzipped("wled00/data/index.htm", "wled00/html_ui.h", 'index');
 writeHtmlGzipped("wled00/data/pixart/pixart.htm", "wled00/html_pixart.h", 'pixart');
-writeHtmlGzipped("wled00/data/cpal/cpal.htm", "wled00/html_cpal.h", 'cpal');
+//writeHtmlGzipped("wled00/data/cpal/cpal.htm", "wled00/html_cpal.h", 'cpal');
 writeHtmlGzipped("wled00/data/pxmagic/pxmagic.htm", "wled00/html_pxmagic.h", 'pxmagic');
 
+writeChunks(
+  "wled00/data/cpal",
+  [
+    {
+      file: "cpal.htm",
+      name: "PAGE_cpal",
+      method: "gzip",
+      filter: "html-minify"
+    }
+  ],
+  "wled00/html_cpal.h"
+);
+
 writeChunks(
   "wled00/data",
   [

diff --git a/usermods/audioreactive/audio_reactive.cpp b/usermods/audioreactive/audio_reactive.cpp
@@ -1981,7 +1981,7 @@ void AudioReactive::createAudioPalettes(void) {
   if (palettes) return;
   DEBUG_PRINTLN(F("Adding audio palettes."));
   for (int i=0; i<MAX_PALETTES; i++)
-    if (customPalettes.size() < 10) {
+    if (customPalettes.size() < WLED_MAX_CUSTOM_PALETTES) {
       customPalettes.push_back(CRGBPalette16(CRGB(BLACK)));
       palettes++;
       DEBUG_PRINTLN(palettes);

diff --git a/wled00/FX_2Dfcn.cpp b/wled00/FX_2Dfcn.cpp
@@ -8,7 +8,6 @@
   Parts of the code adapted from WLED Sound Reactive
 */
 #include "wled.h"
-#include "palettes.h"
 
 // setUpMatrix() - constructs ledmap array from matrix of panels with WxH pixels
 // this converts physical (possibly irregular) LED arrangement into well defined

diff --git a/wled00/FX_fcn.cpp b/wled00/FX_fcn.cpp
@@ -11,7 +11,6 @@
 */
 #include "wled.h"
 #include "FXparticleSystem.h"  // TODO: better define the required function (mem service) in FX.h?
-#include "palettes.h"
 
 /*
   Custom per-LED mapping has moved!
@@ -219,8 +218,12 @@ void Segment::resetIfRequired() {
 }
 
 CRGBPalette16 &Segment::loadPalette(CRGBPalette16 &targetPalette, uint8_t pal) {
-  if (pal < 245 && pal > GRADIENT_PALETTE_COUNT+13) pal = 0;
-  if (pal > 245 && (customPalettes.size() == 0 || 255U-pal > customPalettes.size()-1)) pal = 0;
+  // there is one randomy generated palette (1) followed by 4 palettes created from segment colors (2-5)
+  // those are followed by 7 fastled palettes (6-12) and 59 gradient palettes (13-71)
+  // then come the custom palettes (255,254,...) growing downwards from 255 (255 being 1st custom palette)
+  // palette 0 is a varying palette depending on effect and may be replaced by segment's color if so
+  // instructed in color_from_palette()
+  if (pal > FIXED_PALETTE_COUNT && pal <= 255-customPalettes.size()) pal = 0; // out of bounds palette
   //default palette. Differs depending on effect
   if (pal == 0) pal = _default_palette; // _default_palette is set in setMode()
   switch (pal) {
@@ -256,13 +259,13 @@ CRGBPalette16 &Segment::loadPalette(CRGBPalette16 &targetPalette, uint8_t pal) {
       }
       break;}
     default: //progmem palettes
-      if (pal>245) {
+      if (pal > 255 - customPalettes.size()) {
         targetPalette = customPalettes[255-pal]; // we checked bounds above
-      } else if (pal < 13) { // palette 6 - 12, fastled palettes
-        targetPalette = *fastledPalettes[pal-6];
+      } else if (pal < DYNAMIC_PALETTE_COUNT+FASTLED_PALETTE_COUNT+1) { // palette 6 - 12, fastled palettes
+        targetPalette = *fastledPalettes[pal-DYNAMIC_PALETTE_COUNT-1];
       } else {
         byte tcp[72];
-        memcpy_P(tcp, (byte*)pgm_read_dword(&(gGradientPalettes[pal-13])), 72);
+        memcpy_P(tcp, (byte*)pgm_read_dword(&(gGradientPalettes[pal-(DYNAMIC_PALETTE_COUNT+FASTLED_PALETTE_COUNT)-1])), 72);
         targetPalette.loadDynamicGradientPalette(tcp);
       }
       break;
@@ -566,8 +569,7 @@ Segment &Segment::setMode(uint8_t fx, bool loadDefaults) {
 }
 
 Segment &Segment::setPalette(uint8_t pal) {
-  if (pal < 245 && pal > GRADIENT_PALETTE_COUNT+13) pal = 0; // built in palettes
-  if (pal > 245 && (customPalettes.size() == 0 || 255U-pal > customPalettes.size()-1)) pal = 0; // custom palettes
+  if (pal <= 255-customPalettes.size() && pal > FIXED_PALETTE_COUNT) pal = 0; // not built in palette or custom palette
   if (pal != palette) {
     //DEBUG_PRINTF_P(PSTR("- Starting palette transition: %d\n"), pal);
     startTransition(strip.getTransition(), blendingStyle != BLEND_STYLE_FADE); // start transition prior to change (no need to copy segment)

diff --git a/wled00/colors.cpp b/wled00/colors.cpp
@@ -252,7 +252,7 @@ void loadCustomPalettes() {
   byte tcp[72]; //support gradient palettes with up to 18 entries
   CRGBPalette16 targetPalette;
   customPalettes.clear(); // start fresh
-  for (int index = 0; index<10; index++) {
+  for (int index = 0; index < WLED_MAX_CUSTOM_PALETTES; index++) {
     char fileName[32];
     sprintf_P(fileName, PSTR("/palette%d.json"), index);
 

diff --git a/wled00/colors.h b/wled00/colors.h
@@ -123,7 +123,7 @@ CRGBPalette16 generateHarmonicRandomPalette(const CRGBPalette16 &basepalette);
 CRGBPalette16 generateRandomPalette();
 void loadCustomPalettes();
 extern std::vector<CRGBPalette16> customPalettes;
-inline size_t getPaletteCount() { return 13 + GRADIENT_PALETTE_COUNT + customPalettes.size(); }
+inline size_t getPaletteCount() { return FIXED_PALETTE_COUNT + customPalettes.size(); }
 inline uint32_t colorFromRgbw(byte* rgbw) { return uint32_t((byte(rgbw[3]) << 24) | (byte(rgbw[0]) << 16) | (byte(rgbw[1]) << 8) | (byte(rgbw[2]))); }
 void hsv2rgb(const CHSV32& hsv, uint32_t& rgb);
 void colorHStoRGB(uint16_t hue, byte sat, byte* rgb);
@@ -141,4 +141,8 @@ void setRandomColor(byte* rgb);
 
 [[gnu::hot, gnu::pure]] uint32_t color_fade(uint32_t c1, uint8_t amount, bool video = false);
 
+// palettes
+extern const TProgmemRGBPalette16* const fastledPalettes[];
+extern const uint8_t* const gGradientPalettes[];
 #endif
+
diff --git a/wled00/const.h b/wled00/const.h
@@ -6,7 +6,15 @@
  * Readability defines and their associated numerical values + compile-time constants
  */
 
-#define GRADIENT_PALETTE_COUNT 59
+constexpr size_t FASTLED_PALETTE_COUNT = 7;   // = sizeof(fastledPalettes) / sizeof(fastledPalettes[0]);
+constexpr size_t GRADIENT_PALETTE_COUNT = 59; // = sizeof(gGradientPalettes) / sizeof(gGradientPalettes[0]);
+constexpr size_t DYNAMIC_PALETTE_COUNT = 5;   // 1-5 are dynamic palettes (1=random,2=primary,3=primary+secondary,4=primary+secondary+tertiary,5=primary+secondary(+tertiary if not black)
+constexpr size_t FIXED_PALETTE_COUNT = DYNAMIC_PALETTE_COUNT + FASTLED_PALETTE_COUNT + GRADIENT_PALETTE_COUNT; // total number of fixed palettes
+#ifndef ESP8266
+  #define WLED_MAX_CUSTOM_PALETTES (255 - FIXED_PALETTE_COUNT) // allow up to 255 total palettes, user is warned about stability issues when adding more than 10
+#else
+  #define WLED_MAX_CUSTOM_PALETTES 10 // ESP8266: limit custom palettes to 10
+#endif
 
 // You can define custom product info from build flags.
 // This is useful to allow API consumer to identify what type of WLED version