How to config the RC port of PX4's IO to a duplex single wire?

Pixhawk
1

Hey.Guys.
I am trying to config the IO’s RC input to a single wire serial port in px4iofirmware(src/modules/px4iofirmware/serial.c) . However it can never send back a word. Why? Do I miss anything fot that? Thank you!

截屏2022-04-12 下午9.08.17
截屏2022-04-12 下午9.08.171076×1044 131 KB

2

Hi,

Did you ever manage to solve this?

I’m trying to send telemetry via a ghost radio via duplex single-wire serial - it receives fine from the radio/ground, but no telemetry gets through so I suspect PX4 isn’t switching the serial line to tx for writes