yampad_kmk/README.md

Connecting to the serial of the board on linux

You can use screen to connect to the serial terminal for the kb2040, this will allow you to read the debug information if debugging is enabled and interact with the kb2040's REPL for testing

On my system it's as simple as

screen -f /dev/ttyACM0

You can exit screen by hitting the following key combo

CTRL + A -> D