GPS decoding

[Macgman2000]

Hello All,

I checked the archive but didn't see anything I could use regarding my application. I was given a GPS receiver for free. I have a Travroute Co-pilot (round white hockey puck size) GPS receiver that plugs into the serial port on a PC.

I want to interface this GPS to a PIC 16F628A or 16F88 and a 4x20 LCD. Does anyone have information or PBPro code I can use to decode it's serial information?

Best Regards,
Nick

[NavMicroSystems]

I dont know that particular Receiver Model, but most GPS Receivers support NMEA Data.

if you hook up the receiver to your PCs COM Port and capture the incomming data in Hyperterm (4800 8N1) you should see something like:

$GPVTG,054.7,T,034.4,M,000.5,N,000.9,K*47
$GPRMC,225446,A,4916.45,N,12311.12,W,000.5,054.7,1 91194,020.3,E*68
$GPRMB,A,0.66,L,003,004,4917.24,N,12309.57,W,001.3 ,052.5,000.5,V*0B
$GPBWC,225444,4917.24,N,12309.57,W,051.9,T,031.6,M ,001.3,N,004*29
$GPWPL,4917.16,N,12310.64,W,003*65
$GPGLL,4916.45,N,12311.12,W*71

If 4800 8N1 doesn't work try 9600 8N1 and other Baudrates.

If your receiver sends Data of that type: Google for NMEA 0183" and you'll find all you need.

[Macgman2000]

Hello Ralph,

Yes it worked at 4800 8N1 like you suggested. I will look up the spec and see what I can do with it. Thanks for your help!!!!

Best Regards,
Nick