Same problem here.
Since 3 days I've been trying to write something to the GPS.
I've received the GPS 4 moth ago. Maybe it's a manufacture failure.
Seems the GPS is working in the manufacture settings because I receive this message:
??:??:?? $GPRMC,,V,,,,,,,,,,N*53
??:??:?? $GPVTG,,,,,,,,,N*30
??:??:?? $GPGGA,,,,,,0,00,99.99,,,,,,*48
??:??:?? $GPGSA,A,1,,,,,,,,,,,,,99.99,99.99,99.99*30
??:??:?? $GPGSV,1,1,00*79
??:??:?? $GPGLL,,,,,,V,N*64
But I get a time-out every time I want to write something through RX.
According to other comments we aren't the only ones:
viewtopic.php?f=17&t=29547&p=132109&hilit=gs407#p132109
http://www.sparkfun.com/users/113453
I'm using the Serial port of the Floss JTAG and Lisa/M for UART tunnel to 3.3V supply.
And this Breakout:
http://www.sparkfun.com/products/10496
Its possible to program the GPS using the USB ports on the LEA board. But the warranty will be gone after modifications and the problem wont be solved (I think).
Thx 4 any hint
Bruzzlee