GPS Fix never obtained


#1

I try to use C-GPS with a WMP100 development kit.
I download on the board the query application but it doesn’t work. The NMEA frames are empty, they look like :

$GPRMC,235947.201,V,0000.0000,N,00000.0000,E,0.00,0.00,210899,0.0,N*5E
$GPGGA,235947.201,0000.0000,N,00000.0000,E,0,00,0.0,0.0,M,03
$GPGLL,0000.0000,N,00000.0000,E,235947.201,V,N
4C
$GPGSA,A,1,1E
$GPZDA,235947.201,21,08,1999,58
$GPGLL,0000.0000,N,00000.0000,E,235947.201,V,N
4C
$GPRMC,235947.801,V,0000.0000,N,00000.0000,E,0.00,0.00,210899,0.0,N
54
$GPGGA,235947.801,0000.0000,N,00000.0000,E,0,00,0.0,0.0,M,09
$GPGLL,0000.0000,N,00000.0000,E,235947.801,V,N
46

I think it’s because the fix is not obtained but I don’t understand why. The antenna is placed outdoor at over clear sky. I wait for one hour but it’s always the same.

Thank you.


#2

Hi Agathe N,
You can refer to http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=28&t=2400
ttt