FR - connection via board, not via pi ?

[Avatarsia]

just a general question.
based on the fact that there are uart ports on the board, would it be possible to use these instead the pins from the pi?

[freakydude]

You mean, the UART Pins from the main board?
Then you would have to pipe the tx/rx stream from the main board (mcu) to your Linux on the raspberry...
That would mean, the the klipper firmware that is running in the mcu must provide this stream.

I didn't found that interface / feature.

If you or someone found a way doing that, let us know.
then it will work.

Best regards