[ntp:questions] nmea stopped working all of a sudden

Nicola Berndt nb at komeda-berlin.de
Sat Aug 23 16:51:30 UTC 2008


>> And here what I get with it:
>>
>>     remote           refid      st t when poll reach   delay   offset  jitter>==============================================================================> GPS_NMEA(0)     .GPS.            0 l    -   64    0    0.000    0.000   0.001
>>     
>
> The 0 under reach says you aren't getting any data from that system.
>
>
>   
>> nmea: gpsread 72 $GPGGA,151022.00,5225.83871,N,01316.84595,E,1,07,0.99,39.8,M,44.9,M,,*60
>>     
>
> That says the unit is working and providing GPGGA info.  The 1 after the E
> says it thinks the data is valid.  (aka it is hearing enough satellites)
>
> Go back up and look at the config file.  The default for the NMEA driver
> is to expect GPRMC sentences.  So you should either fix your unit to
> send them (and not waste time with the GPGGA stuff) or fix your config
> file to use the GPGGA sentences.  I think that takes a mode subcommand.
>
>   
Thx a lot for that hint! Strangely the unit sometimes comes with GPRMC 
sentenses and sometimes not, so I configured ntpd to use the GPGGA 
sentenses. Just had to add 'mode 2' to the config line of the gps device.

Best regards,
../nico berndt



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