FadeQueue_HwPWM

Demonstrates the per-channel fade queue API of Esp32HardwarePwm.

Two queue modes are shown side by side:

Channel 0 — FIFO mode (default): Fades are pre-loaded before the channel starts. The library chains them automatically without application involvement. When the last entry completes the onQueueEmpty callback fires.
Channel 1 — CYCLIC mode: Three entries are seeded. When the last entry finishes playback wraps back to entry 0 and continues indefinitely. onCyclicWrap fires on each loop. resetQueue is called after three full cycles to stop the channel.
Common callback: onFadeDone fires after every individual fade on any channel and prints the channel index and current duty value to Serial.

Hardware

Tested on ESP32 classic. Adjust pinList for your board; avoid GPIO 6–11 (SPI flash) and GPIO 34–39 (input-only).