[FOSS-GPS] RTKNavi hanging

[Michele Bavaro]

As far as I know long range modules as the Xbee868 have much lower data 
rate than it's 2.4GHz brothers. In Europe this is to meet the duty cycle 
imposed by broadcasting regulations. Please make sure that you send the 
very minimum amount of data through the wireless link or the XBees might 
stop transmitting for about a hour.

Cheers,
Michele


On 27/08/2012 06:05, dannym at austin.rr.com wrote:
> OK, I think I've got it... I had NMEA going to the port on the direct USB link to the computer.  I'm not sure why this would be a problem, AFAIK RTKLib recognizes NMEA and UBX binary and only accepts the binary.  The extra bandwidth for the unneeded data might overrun the buffers though, and might only do so when there's enough satellites overhead?
>
> Danny
>
> ---- Danny Miller <dannym at austin.rr.com> wrote:
>> I'm using my 2 uBlox LEA-6T units, one through a 900MHz Xbee link.
>>
>> The problem is that after a few seconds, the window for the fix
>> freezes.  The Fix Type goes gray, the lat/long won't change, and the
>> Plot window stops making new points.
>>
>> The SNR windows for the 2 GPS types are still active and moving dynamically.
>>
>> If I hit Stop and Start again, it will remain frozen.  I must close the
>> program and restart and it will work again, but always for under a minute.
>>
>> I pulled up the uBlox config program and the units are still working
>> just fine.
>>
>> I did lower the rate to 1Hz, but it still froze up the same way every time.
>>
>> This used to work earlier, before I switched to the Xbee link, but I
>> don't have any reason to believe that's the problem right now.
>>
>> I don't have any of the RTKLib 2.4.1 patches installed.  Could this be a
>> problem which has been solved already?
>>
>> Danny
>>
>> _______________________________________________
>> This message is sent to you from FOSS-GPS at lists.osgeo.org mailing list.
>> Visit http://lists.osgeo.org/mailman/listinfo/foss-gps to manage your subscription
>> For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS
> _______________________________________________
> This message is sent to you from FOSS-GPS at lists.osgeo.org mailing list.
> Visit http://lists.osgeo.org/mailman/listinfo/foss-gps to manage your subscription
> For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS