GPS always returns the same position

[Star]

Hi all,

I'm writing an application that reads data from the COM port where a GPS
is connected. I'm using the OpenNETCF.IO.Serial library.

This works great on my HTC Kaiser PDA which comes with an integrated
GPS, however I have noticed that with other PDAs that use a bluetooth
GPS, most of the time they always get the same position.

It seems that if you use a port splitter (like GPSGate) it resolves the
problem, but I was wondering if there is something that I can do from my
program to make it compatible with this type of GPS.

Thanks

 

[Dick Grier]

Have you examined the actual raw NMEA-0183 data to see what the Lat?Lon is?
The decoder cannot do anything about incorrect data.

I cannot imagine a reason that a GPS splitter would affect the results.
Certainly, the BT receivers that I have used do not show such a problem.

Dick
--
Richard Grier, MVP
Hard & Software
Author of Visual Basic Programmer's Guide to Serial Communications, Fourth
Edition,
ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March
2006.
See www.hardandsoftware.net for details and contact information.