MAV_STATE_CRITICAL message

[Efe]

Hi Bluerobotics Team!
I was messing with HEARTBEAT system_status messages. It sends mav_state_critical message when I don’t send any control messages. I am sending heartbeat messages but when I stop sending manual control messages system status turns to MAV_STATE_CRITICAL. Is it a normal behaviour or is there a problem with the vehicle?

[EliotBR (Eliot)]

Hi @Efe,

@EliotBR

MAVLink connections expect to receive a heartbeat message at least every second (if not received the communication may be stopped), and when you’re controlling the vehicle it’s subject to the heartbeat failsafe , and rc override commands are subject to the pilot input failsafe and to RC_OVERRIDE_TIME.

Presumably you’re running into the pilot input failsafe, in which case MAV_STATE_CRITICAL does seem to be the most relevant of the MAV_STATE options.