The AXIOM Remote is envisioned to communicate with the AXIOM Beta over USB and a CDC
(https://en.wikipedia.org/wiki/USB_communications_device_class) meaning simple ASCII messages are exchanged.

These messages can be received and sent over any serial console (like minicom, screen, putty, etc.) for debug purposes (from ttyACM0 typically).

Now we want to take this communication to the next level with a small (python?) tool running on the AXIOM Beta or for development purposes on a Linux PC connected to the AXIOM Remote that listens to the ASCII messages coming from the AXIOM Remote and responds to some of them accordingly to the protocol.

The protocol communication draft can be found here: https://github.com/apertus-open-source-cinema/AXIOM-Remote/blob/dev/Firmware/README.md#communication-protocol

As first stage prototype this CDC script/tool could just modify a received single character message and advance it by one in the alphabet as return message.
Example: if the remote sends "A", the listener returns "B", or on receiving "Z" returns an "A". That way we can verify the first parts of the communication.

This task is related to T1122.