Hi @Jack-Bishop ,
We're working on something that allows you to access the UART that is mapped to the DSP from the applications processor through a 'bridge'.
We are successfully using this for our ESC tools but it's not abstracted yet into a clean example so I'm waiting on that for further possible guidance here that's more 'mainline'.
This is what I'm referencing for short term, e.g.
https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-esc/-/blob/master/voxl-esc-tools/voxl_serial.py#L5