Acquiring Locations from a GPS Bluetooth Receiver

Hi,

I have a Sony Ericsson K800i Mobile. I am interested in buying a
Bluetooth GPS receiver so as to be able to acquire the location
points.

I am interested in writing the application using GIS myself, so I am
just interested in how the coordinates are transmitted. I think I have
to write the java application myself right? All I just want is some
reference to a library, an RFC or something which specifies how the
coordinates can be passed from the Bluetooth dongle to the Mobile.

The Bluetooth dongle I am thinking of buying is this : http://
cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=110086017097t

Thanks and regards

Matthew

Hi,

The bluetooth Dongle should create a 'virtual Serial Port' in your
Sony Ericsson, over which the Bluetooth GPS that you will buy will
stream data in NMEA format (simple ASCII strings containing RMS, GGA
'sentences', containing the GPS long/lat, speed, course data etc.)

technically this is called serial port emulation. "Serial Port
Profile (SPP) allows Bluetooth devices to perform RS232 (or similar)
serial cable emulation"

So effectively, you should use the Serial port Access API provided in
the J2ME compiler to recieve the strings, parse them (there are APIs
for that also), and log/show the coordinates in your custom
application.

HTH
Suraj