[Gta04-owner] GPS fix?

Neil Jerram neil at ossau.homelinux.net
Mon Nov 14 23:21:55 CET 2011


Has anyone got a GPS fix yet, or any real GPS information, with their 
GTA04?  I don't seem to get one with mine.

Here is some NMEA output, after power cycling the GPS and leaving it in 
the open air, stationary, for more than 10 minutes:

gta04:~# cd /sys/devices/virtual/gpio/gpio145/
gta04:/sys/devices/virtual/gpio/gpio145# cat value
1
gta04:/sys/devices/virtual/gpio/gpio145# killall gpsd
gta04:/sys/devices/virtual/gpio/gpio145# cat /dev/ttyS1
$GPGGA,001144.031,,,,,0,00,,,M,0.0,M,,0000*54
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPRMC,001144.031,V,,,,,,,130806,,,N*43
$GPGGA,001145.031,,,,,0,00,,,M,0.0,M,,0000*55
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPRMC,001145.031,V,,,,,,,130806,,,N*42
$GPGGA,001146.041,,,,,0,00,,,M,0.0,M,,0000*51
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPGSV,3,1,12,20,00,000,,10,00,000,,25,00,000,,27,00,000,*79
$GPGSV,3,2,12,19,00,000,,07,00,000,,04,00,000,,24,00,000,*76
$GPGSV,3,3,12,16,00,000,,28,00,000,,26,00,000,,29,00,000,*78
$GPRMC,001146.041,V,,,,,,,130806,,,N*46
$GPGGA,001147.031,,,,,0,00,,,M,0.0,M,,0000*57
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPRMC,001147.031,V,,,,,,,130806,,,N*40
$GPGGA,001148.031,,,,,0,00,,,M,0.0,M,,0000*58
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPRMC,001148.031,V,,,,,,,130806,,,N*4F
$GPGGA,001149.045,,,,,0,00,,,M,0.0,M,,0000*5A
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPRMC,001149.045,V,,,,,,,130806,,,N*4D
$GPGGA,001150.031,,,,,0,00,,,M,0.0,M,,0000*51
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPRMC,001150.031,V,,,,,,,130806,,,N*46
$GPGGA,001151.031,,,,,0,00,,,M,0.0,M,,0000*50
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPGSV,3,1,12,20,00,000,,10,00,000,,25,00,000,,27,00,000,*79
$GPGSV,3,2,12,19,00,000,,07,00,000,,04,00,000,,24,00,000,*76
$GPGSV,3,3,12,16,00,000,,28,00,000,,26,00,000,,29,00,000,*78
$GPRMC,001151.031,V,,,,,,,130806,,,N*47
$GPGGA,001152.043,,,,,0,00,,,M,0.0,M,,0000*56
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPRMC,001152.043,V,,,,,,,130806,,,N*41
$GPGGA,001153.031,,,,,0,00,,,M,0.0,M,,0000*52
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPRMC,001153.031,V,,,,,,,130806,,,N*45
$GPGGA,001154.031,,,,,0,00,,,M,0.0,M,,0000*55
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPRMC,001154.031,V,,,,,,,130806,,,N*42

If I understand correctly, the GPGGA lines are indicating no fix, and 
the GPGSV lines are malformed.

Thanks,
      Neil



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