Gps 2850

Tobias

I am having problems trying to make the 28506 talk to my cubloc cb280 mirco controller,,,,, what could I be doing wrong,,,?

I had very good luck with the 28501 which is simular to the same thing but has 4800 bps baud rate which the 28506 has 9600bps which I changed in my code and I also pulled the raw pin low but still can't see any data strings comeing in on my port,,,,,,,, so when I have the 28501 working good and seeing data strings at 4800bps shouldn't I also see data when I hook up the 28506 and change my code to 9600bps ??????????????????


Thanks, Toby

alex123

Are you seeing any activity on the Tx pin on the GPS module? Take a look at it on the oscilloscope. If you see nothing it's the power or simply the module is a DOA. If there is something there you can figure out if your baud rate and/or voltage levels are correct.

Alex

alex123

One more thing. I just looked at the module schematic. Are you using the SIO pin on the 4 pin header to communicate with the module? According to the schematic the TX and RX lines are located on the PropPlug on other side of the PCB.

Publison

Tobias wrote: »

I am having problems trying to make the 28506 talk to my cubloc cb280 mirco controller,,,,, what could I be doing wrong,,,?

I had very good luck with the 28501 which is simular to the same thing but has 4800 bps baud rate which the 28506 has 9600bps which I changed in my code and I also pulled the raw pin low but still can't see any data strings comeing in on my port,,,,,,,, so when I have the 28501 working good and seeing data strings at 4800bps shouldn't I also see data when I hook up the 28506 and change my code to 9600bps ??????????????????


Thanks, Toby

Check this recent post. I had a quick look at the firmware, and it does specify 4800 sometimes and 9600 at other times.

http://forums.parallax.com/showthread.php?134506-VPN1513-GPS-Receiver-Module-documentation-problems&highlight=GPS+Documentation

I wish I had the module to check it out. Maybe I can get one at Makers Faire this weekend.