We're having trouble getting a v3.0RevC board to accept that there's a Spectrum RX on the dedicated 'Spektrum' socket. Whenever we write ANY value into the "RC_ROLL pin mode" field it ALWAYS reverts to "SBGC Serial API" at the instant we try to write it to the board. There is 3.3V at the Spektrum socket measured with the RX plugged in. Tried two different RXs. Tried different Profiles.
Hello, Did you get this board from us? Can you specify what you mean under "revC board" ? Please, make a few photos of both sides of the board. Thank you.