Unable to change MKS DroneCAN servo bitrate via PX4 MAVLink console

PX4 Autopilot
1

Hi everyone,

I’m currently using PX4 with several MKS DroneCAN servos connected to the CAN bus (Node ID 117). I tried to change the servo’s bitrate from 1 Mbit/s to 500 kbit/s using the PX4 MAVLink console command:

uavcan param set 117 mks.servo.CAN-Bitrate 1

However, the console returned “failure” every time.
The uavcan param list 117 command shows the parameter clearly:

name: mks.servo.CAN-Bitrate (0:1M, 1:500K, 2:250K, 3:125K) 0

So the parameter definitely exists, but PX4 refuses to change it.
Other parameters (like mks.servo.NodeID) can be changed successfully.

I was able to change the bitrate successfully using the DroneCAN GUI Tool,
so it seems the issue only occurs when using the PX4 uavcan param set command.

Has anyone else experienced this issue?

Thanks in advance!

2

I’ve not seen it but I don’t think I’ve ever used the shell to set a param on a node. Can you open a PR to fix it or to just remove the shell commands outright if they don’t work?

edit: ahh I read this too quickly. It works, but not for that param name. Probably the hypen -