I am trying to generate GPS messages on a companion computer and send them to the flight controller. Nothing is going through, then I looked at the messages coming from the FC on the GPS port and I got saw this message
$PSRF100,0,38400,8,1
So it appears to be asking for the protocol to be set to SiRF binary. Is this optional? Is there a setting within Mission Planner where the the GPS port can be configured to be happy with nmea text messages?