Single Core Issues? about esp_dmx

[someweisguy]

Thanks for bringing this to my attention! I've loaded up my ESP32C3 on Arduino and I am seeing this same error. I am not seeing this error on ESP-IDF, however, so that indicates to me that something funky is going on with Arduino for the ESP32-C3.

I will investigate and keep you updated!

[someweisguy]

Thanks for your patience on this. I have found the issue and it is two-fold.

First there was an issue with the DMX driver attempting to use one of the ESP32C3's hardware timers that was reserved for the Watchdog. Because the watchdog timer was getting clobbered by the DMX driver, this was causing the ESP32C3 to hang upon calling dmx_driver_install().

Second, there appears to be an issue with the pins that you are assigning for use with the DMX driver. Pins 20 and 21 are indeed labelled TX and RX on the ESP32C3 dev board, but these are for UART 0, which is used for communication to and from the Serial Monitor. When giving these pins to the DMX driver by calling dmx_set_pin(), you are clobbering the Serial Monitor pins. I believe that this should be fine if you don't need to read or write to the Serial Monitor. If you are using the Serial Monitor for logging messages, you will need to use different pins.

I've submitted PR #69 to fix this issue. I will be merging it shortly. When I do, you are able to clone the head of the release/v3.0 and you will be able to use this library. Let me know if you have any questions!