Ben,
I looked in to this last year. most GPSs use one of a handful of data standards (marine units generally use the NMEA standard) that encodes the data in a rather strange format. You can buy the standard to decode the data or you might also try just putting the output of a gps unit (usually 422 serial, but now also usb) into a serial analyzer or a terminal program to see if you can figure the data format out yourself. I have done this with other sorts of equipment and had good luck. As long as they dont actually encrypt the data you can usually pluck it out once you are grabbing good data chunks (another fun thing to noodle out). This is made easier since you will know exactly what data you are looking for (ie the lat lon data on the readout of the gps unit).
i think the data stream will also probably have gmt time of the reading and might also have machine specific stuff like course, ground speed, etc.
if you google nmea gps standard you will find some interesting info out there and some rev files to checkout!
cheers,
jeff
Jeffrey Reynolds 6620 Michaels Dr Bethesda, MD 20817 301.469.8562 [EMAIL PROTECTED]
On Jan 24, 2005, at 6:26 AM, [EMAIL PROTECTED] wrote:
Has anyone any experience in linking Rev - on any platform - to a GPS
reciever, so that it can either poll for coordinates, or receive an update
of them?
We've just had an enquiry, which we need to move fast on, and I'd really
appreciate a chat with anyone who's been there before, any tips on kit that
works/doesn't work, etc.
TIA,
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