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Science Forum Index » Geology - Satellite Navigation Forum » Garmin protocol problem...
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| Bruce Stemplewski... |
 Posted: Sun May 11, 2008 8:26 am |
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Guest
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I have been notified of a problem with my OCX where getting datetime
form the GPS fails. I checked into it and noticed that getting position
also fails.
I set up a test program using the sample code found on Garmin's website.
This code is also experiencing a similar problem.
The USB packet is supposed to have a 14 (hex) 20 (decimal) as the first
byte of the packet. Periodically, this byte is dropped. It may take
50000+ iterations but it will fail eventually. Has anyone else seen
this behavior?
It seems like this might actually be a problem with the USB driver or GPS.
I have seen the problem, so far with the GPS 18 and GPSMap 76C
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Bruce E. Stemplewski
GarXface OCX and C++ Class Library for the Garmin GPS
www.stempsoft.com |
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| J- at (no spam) -ck... |
| Posted: Mon May 12, 2008 8:15 am |
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Guest
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Bruce Stemplewski a écrit :
Quote:
I have been notified of a problem with my OCX where getting datetime
form the GPS fails. I checked into it and noticed that getting position
also fails.
I set up a test program using the sample code found on Garmin's website.
This code is also experiencing a similar problem.
The USB packet is supposed to have a 14 (hex) 20 (decimal) as the first
byte of the packet. Periodically, this byte is dropped. It may take
50000+ iterations but it will fail eventually. Has anyone else seen
this behavior?
It seems like this might actually be a problem with the USB driver or GPS.
I have seen the problem, so far with the GPS 18 and GPSMap 76C
I also have problem with my old Garmin GPS II Pilot and unable
to do the update ...even if it was prepaid. Then Garmin is now
on my blacklist ;-(
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J- at (no spam) -ck |
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| Bruce Stemplewski... |
| Posted: Mon May 12, 2008 7:47 pm |
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J- at (no spam) -ck wrote:
Quote:
I also have problem with my old Garmin GPS II Pilot and unable
to do the update ...even if it was prepaid. Then Garmin is now
on my blacklist ;-(
Our issues have nothing in common. The GPS II is serial. My issue is
with the Garmin USB protocol.
--
Bruce E. Stemplewski
GarXface OCX and C++ Class Library for the Garmin GPS
www.stempsoft.com |
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