Crossfire receiver not detected after software reboot

ArduPlane Plane 4.3
1

I use Crossfire nano receiver on Serial1 port of my plane with Omnibus F4V3 running Arduplane 437.
When I boot FC by powering plane up, it’s normally detected as an RC source and all is working.
When I do soft reboot from the MP using command “Actions/preflight reboot shutdown”, receiver is not detected by FC and I have Failsafe/ No RC receiver messages.
Interesting is, that in this “not detected” situation I have anyway working telemetry from FC over crossfire (on my Radiomaster I can see battery status, GPS satellites…)
It’s the same using telemetry @38k over radio module from Serial4 or over USB virtual port.
When I do another power down and up again, RC receiver is again detected and all is working.
Crossfire receiver is set to output CRSF protocol and SERIAL1_PROTOCOL =23.
What can be wrong?

2

Hi @rptacek ,

You did nothing wrong. It is a known issue:
issue #22886

3

Thank you, I started discussing it at the github. Interesting is, that it was supposed to be solved so it was a bad news for developers, that it’s maybe not solved yet…

1 Like
4

Same thing for me also. Power cycling the nano brings it back up.

5

Thanks for confirmation so my setup isn’t unique. If you can, please post it also on github here: Arduplane + CRSF = dead link after FC reboot · Issue #22886 · ArduPilot/ardupilot · GitHub. It seems not moving much forward. Unfortunately I don’t have knowledge to help solving it, we need a real developer.