Rpi mavlink (unable to get param)

ArduCopter
1

Hi all, I am using RPI 4 and APM 2.8. I am following the link https://ardupilot.org/dev/docs/raspberry-pi-via-mavlink.html to configure my RPI 4 with APM 2.8 via Mavlink. I am unable to:
param show ARMING_CHECK
param set ARMING_CHECK 0
arm throttle

I have tried different baudrate but same results.

This is what I got:

photo6105165114001959659
photo61051651140019596591280×960 199 KB

Please help, i don’t understand why. Thank in advance!

2

Could be that you’re using an older version of pymavlink. Do a pip install pymavlink --user --upgrade