I tried to use Reach M+ with Navio2 board.
It works fine in UART as I can see the 3D RTK Lock, however, all my attempts to attach the USB failed.
In Arducopter I made sure to add -E /dev/ttyACM0 and I can see ACM0 in /dev/
I tried two options with -B /dev/ttyAMA0 -E /dev-ttyACM0 and only with -E /dev/ttyACM0.
I have enabled on USB-to-PC position output on Reach M+ and made sure to enable the second GPS on Ardcupter parameters, but still, I cannot see the lock on the copter, although Reach M+ connects to 17 satellites.
Any hint about this?
Another weird thing is that when I connect on UART, I can see the 3D RTK Lock, but the number of satellites reports in GQgroundControl (9) is lower than the number of sats reports in Reach M+ applications. Is this normal?