MAVSDK offboard examples not working without manual control present

[julianoes]

Describe the bug
The MAVSDK offboard examples stopped working. It fails to takeoff in offboard mode even with NAV_RCL_ACT set to 0 claiming:

WARN [commander] Failsafe enabled: No manual control stick input

To Reproduce
Steps to reproduce the behavior:

1. Start SITL
2. Set NAV_RCL_ACT to 0
3. Run MAVSDK example: e.g. https://github.com/mavlink/MAVSDK-Python/blob/main/examples/offboard_position_ned.py

I get:

pxh> 
pxh> 
pxh> INFO  [mavlink] partner IP: 127.0.0.1
INFO  [tone_alarm] home set
INFO  [tone_alarm] notify negative
INFO  [commander] Armed by external command	
WARN  [commander] Failsafe enabled: No manual control stick input	
INFO  [commander] Failsafe mode activated	
INFO  [tone_alarm] battery warning (fast)
INFO  [commander] Disarmed by auto preflight disarming	
INFO  [logger] closed logfile, bytes written: 3283058

[benjinne]

Is COM_RCL_EXCEPT set to ignore RC in offboard? I made some changes to how the offboard failsafes work in this MR #18160 and could be related.

[omerts]

The following param settings fixed it for me:

NAV_DLL_ACT = 0
NAV_RCL_ACT = 0
COM_RCL_EXCEPT = 4

Taken from: https://discuss.px4.io/t/offboard-mode-in-sitl/25727/3

[julianoes]

Thanks @omerts. We should probably set that param in the example, or at least make a comment.

[Amna-Smaoui]

hello ! where should i set this param ? I have the same issue

[julianoes]

I'm currently trying to fix this for MAVSDK tests: mavlink/MAVSDK#1813

[julianoes]

@MaEtUgR sorry, this fell of my radar. You fixed this in the meantime, right?

[fabrizioschiano]

@MaEtUgR Please check if this is somehow related to your problem: #20667 (comment)