Bugfix

- getPixelColor() for analog
- RMT channel (#3922)

wled00/bus_wrapper.h

@@ -496,6 +496,11 @@ class PolyBus {
   }
 
   static void* create(uint8_t busType, uint8_t* pins, uint16_t len, uint8_t channel, uint16_t clock_kHz = 0U) {
+    #if defined(ARDUINO_ARCH_ESP32) && !(defined(CONFIG_IDF_TARGET_ESP32S2) || defined(CONFIG_IDF_TARGET_ESP32S3) || defined(CONFIG_IDF_TARGET_ESP32C3))
+    // NOTE: "channel" is only used on ESP32 (and its variants) for RMT channel allocation
+    // since 0.15.0-b3 I2S1 is favoured for classic ESP32 and moved to position 0 (channel 0) so we need to subtract 1 for correct RMT allocation
+    if (channel > 1) channel--; // accommodate I2S1 which is used as 1st bus on classic ESP32
+    #endif
     void* busPtr = nullptr;
     switch (busType) {
       case I_NONE: break;