ESP32 Controller for digital LEDs

ESP32 DLED Controller controls WS2812B type digital LEDs using the RMT peripheral of ESP32.

This implementation uses the RMT driver from ESP-IDF and uses one RMT channel for a LED strip leaving the other channels free, under the control of the RMT driver. Here are some key points of this implementation:

• the control of the LEDs is separated from the control of the RMT peripheral;
• the other RMT channels can be used as needed;
• the RMT peripheral is used through ESP-IDF’s own driver.

Right now the negative point is that this code uses a lot of RAM, because of the way the driver and peripheral works. There is a way to add a hook in the driver’s transmission code but considering the multithreading architecture of FreeRTOS this may add jitter creating visual artifacts, depending on application.