Has anyone sent commands TO a Garmin 15H or 15L sucessfully?
I can receive NEMA sentences just fine at 4800.
e.g. to tell the garmin NOT to send the $PGRMM sentence, I should be able to send the following to the Garmin according to Garmin docs:
$PRGMO,PGRMM,0 followed by a carriage return and line feed
I have tried this:
Serial2.write("$PGRMO,PGRMM,0"); Serial2.write(13); // carriage return Serial2.write(10); // line feed // I am using Mega serial port 2 here for both sending and receiving
I have tried variations of this code with no luck so far...
What to do?