I have just started to build a concept test program to build a companion computer to may quadcopter.
My arducopter version is 3.3 and a build a small program on a Arduino Nano to communicate with my pixhawk through serial4.
I can read the Heartbeat msg
I can send a parameter request messages and get the answer and decode it, but I also get a msgID = 166.
I can’t find it’s meaning in this doc https://pixhawk.ethz.ch/mavlink/#HEARTBEAT.
Is there another message list or I am miss interpreting the info I get ?
the code that prints the msg code is