Arming PX4 Plane Simulation Without connecting to QGRoundController

PX4 Autopilot
1

Hello forum members,

I’m having a problem with my plane_cam simulation. I’ve tried to arm my plane with:

vehicle.mav.command_long_send(vehicle.target_system,
                                  vehicle.target_component,
                                  mavutil.mavlink.MAV_CMD_COMPONENT_ARM_DISARM, 0, 1, 0, 0, 0, 0, 0, 0)

,

vehicle.arducopter_arm()

and

commander arm

but each time i try, px4 SITL returns: INFO [tone_alarm] notify negative.

I also checked “commander check” and it returns:

INFO  [commander] Preflight check: FAILED
pxh> WARN  [health_and_arming_checks] Preflight Fail: No connection to the ground control station

How can i disable “No connection to the ground control station”? Thanks for helping out.

2

Update:

I managed to arm plane by setting NAV_DLL_ACT to 0 but i don’t want to disable GCS failsafe. Is there any way to introduce my python program as GCS?

3

Fixed the problem. If anyone also trying to develop their own GCS, you need to send heartbeat to plane continuously to acknowledge the plane it’s connected to GCS.

I am new to this stuff but this pymavlink heartbeat_send code here:

vehicle.mav.heartbeat_send(mavutil.mavlink.MAV_TYPE_GCS,
                               mavutil.mavlink.MAV_AUTOPILOT_INVALID, 0, 0, 0)

fixed my problem.

4

Hello @shiro I am new here as well. Could you please share with me how and where I would write a code to send the heartbeat continuously? Thank you so much for your help.

Mustafa