In copter, can we use failsafe co processor to trigger parachute servo in case of FMU failure, so at least there is some safety from it in copters as well?
If yes, can anyone guide to where these changes should be done in code?
Can any @Developer guide me for this?
Also I am not just talking about FMU failure but also the possibility to write loss of control detection code and trigger parachute in that case as well.
I am not sure about FMU failure (I think chute servo channel will be set to its trim value if set to do so using a flag but I am not sure) (for whatever, probably historic, reason chute doesn’t use servo range but dedicated parameters for normal congratulation).
Copter already implements triggering chute on large attitude control deviation (>30° for 1s (accumulated with 1:1 decay)) and excessive sinkrate (watch out as you can dive in acro/stabilize fast enough to trigger it if it is enabled).