default state machine for dmx input

[lokkiikkol]

what is the default sm for dmx input? I could see a way to choose a pio for dmx output, but did not see such a feature for dmx input, so is it always pio0 for input? also does it just use one state machine? so the other 3 are free to use for other stuff? or is there a way to set a specific pio and sm for input as well? EDIT: ok, there is a way to choose pio for the input as well, I saw the description just now in the Arduino IDE. There is no specific description of the used sm's though, but I guess at minimum 2 and one more for each additional instance?

[jostlowe]

Hi! If i remember correctly, this library uses the function pio_claim_unused_sm from the SDK of the pico, so it picks the first available state machine which has not been claimed.

A DMX input uses only one state machine per input.