Re: [Gpsbabel-code] mtk (for BT-Q1000p) does not download all Data

[Robert L. <rob...@gm...>]

On Fri, Aug 8, 2008 at 6:02 AM, JLo <Joa...@st...> wrote:
>
>
>
> i've tested it now with the latest CVS-grab and it looks something better.
> But it shows not all of them and no altitude :-(
>

This isn't weirdness in the NMEA writer; it's that we don't recognize any
altitudes
in the data.bin.  Set a breakpoint on the line that sets trk->altitude and
you'll see it
never gets hit.

Change the input file to reference/track/mtk_logger.bin and it does get hit.


So this file seems to just plain not have altititude (height) records in
it.   Is there
some setup on the GPS that controls whether these get recorded or not?  Some
GPSes don't record them just to reserve space.  There seems to be a bit of
one-upsmanship going on in the logger world right now where saving two bytes
per sample might allow them to advertise that it can store 1.1 zillion
points instead
of 1 zillion points.




>
> Running:
> $ gpsbabel -D 2 -t -r -w -i mtk-bin -f data.bin -o nmea -F gpsbabel.nmea
> GPSBabel Version: 1.3.5-beta20080807
> Default Bitmask 0002002f, Log every 5 sec, 10 m, 0 km/h
> options: module/option=value: nmea/snlen="6" (=default)
> options: module/option=value: nmea/gprmc="1" (=default)
> options: module/option=value: nmea/gpgga="1" (=default)
> options: module/option=value: nmea/gpvtg="1" (=default)
> options: module/option=value: nmea/gpgsa="1" (=default)
> options: module/option=value: nmea/append_positioning="0" (=default)
> options: module/option=value: nmea/gisteq="0" (=default)
> cet_util: Converting from "UTF-8" to "US-ASCII", done.
> $
>
> Gives something like this (in : gpsbabel.nmea):
> No altitude at all :-(
> ...
> $GPRMC,050816.000,A,5124.485,N,00655.691,E,0.00,0.00,080808,,*02
> $GPGGA,050816.000,5124.485,N,00655.691,E,1,00,0.0,0.000,M,0.0,M,,*65
> $GPVTG,0.000,T,0,M,0.004,N,0.008,K*5C
> $GPGSA,A,3,,,,,,,,,,,,,0.0,0.0,0.0*32
> $GPRMC,050821.000,A,5124.485,N,00655.691,E,0.00,0.00,080808,,*06
> $GPGGA,050821.000,5124.485,N,00655.691,E,1,00,0.0,0.000,M,0.0,M,,*61
> $GPVTG,0.000,T,0,M,0.003,N,0.005,K*56
> $GPGSA,A,3,,,,,,,,,,,,,0.0,0.0,0.0*32
> ...
>
> To check it out, i insert the new data.bin
> http://www.nabble.com/file/p18889905/data.bin data.bin
>
> JLo
>
>
> Robert Lipe-2 wrote:
> >
> >> ---,$GPRMC,055315.000,A,5125.767,N,00652.665,E,3.47,0.00,070808,,*02
> >> ---,$GPRMC,055320.000,A,5125.765,N,00652.662,E,0.40,0.00,070808,,*05
> >> ...
> >>
> >> As you see, no gpgga,gpvtg,gpgsa lines. As i say before!
> >>
> >
> > As John said, there is a bug in GPSBabel's 1.3.5 NMEA writer that results
> > in
> > the goofy ---,
> > and the suppression of sentences other than GPRMC.
> >
> > It's fixed in the development version, available via CVS to those willing
> > to
> > build it today.
> >
> > I'll try to get a beta out soon for those that can't/won't do their own
> > builds.
> >
> > RJL
> >
>
> --
> View this message in context:
> http://www.nabble.com/mtk-%28for-BT-Q1000p%29-does-not-download-all-Data-tp18850274p18889905.html
> Sent from the GPSBabel - Dev mailing list archive at Nabble.com.
>
>
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