I've got an issue with the EM-406A GPS Receiver that I'm hoping someone can help me out with. I'm using LadyAda's GPS shield and script but I can only seem to receive $GPRMC sentences.
I'm attempting to enable GGA using this string:
$PSRF103,0,0,1,1*25\r\n
But there's no confirmation message, or any other indication this setting has been accepted. The documentation doesn't seem to indicate a reset to factory default either.
I've also attempted to reset the GPS to SiRF Binary mode with the same (non) results:
$PSRF100,0,4800,8,1,0*0F
Currently I'm attempting to communicate to the GPS using the Arduino as a TTL connection.
I've have checked out LadyAda's message boards but haven't been able to get much further. Any help would be greatly appreciated!