Thanks @PJ_Glasso.
I uploaded a couple of short vids to my Google drive as I can’t attach vids here.
The first is using the Xiao with just the ACB and strobe wired. You can see the strobe trigger once even though it isn’t supposed to.
XIAO.mp4
The second shows the ProMicro with the full code with ACB, Strobe, Nav and Landing light functional.
ProMicro
The second board is just a simple pulse generator to simulate my RC receiver output.
Not sure what you mean by BSP? Quite new to the XIAO.