Hi,
I was able to reproduce it and haven’t been able to make it work on UART1 or UART6, I’ve got it working on UART 2,3,4 with following options:
SERIAL_PROTOCOL=23
SERIAL_OPTIONS=47
Options 47 means:
- invert RX
- invert TX
- half duplex
- swap tx/rx
- pull up RX
Note: rx/tx swapping means FPort has to be wired to the RX pin!