Yeah, thought so myself and continued with 50 kHz.
Anyhow, I found that it works, if I specify the actual pins:
uart:
id: uart_bus
tx_pin: 21
rx_pin: 20
baud_rate: 9600
debug:
direction: BOTH
dummy_receiver: true
after:
delimiter: [0x7E]
I have the strong suspicion that RX may be defined to be another pin for board: esp32-c3-devkitm-1 / variant: esp32c3 in the BSP, though I haven’t tried to verify that.
Next think I’ll look into is how to send a hearbeat / wakeup command before triggering a move, because when the controller goes to sleep, I have to send two messages for it to do anything.