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Re: [ gpsdrive ] ripping out direct serial.



Thanks for bringing this back into our minds.


On Saturday 03 February 2007 07:43, David wrote:
> I asked this question on the list a while back and I think it may have
> been purged from the archive.
>
> I was wondering why the direct serial stuff was on the short list for
> removal and below is an extract from that thread.
>
> It appears to me at the moment that the direct serial stuff remains
> because it isn't currently causing any problems.  I have a serial only
> gps and gpsd was a snap to configure.  It is set and forget.  I know
> because I have forgotten how I did it :)
>
> David
>
> ===========================================================================
>= Direct gps-NMEA connection inside gpsdrive might be a fine thing, but: -
> in the source it's mangled through different files and is not
>    really easy to read nor is the code really up to date.
>  - the NMEA-dialect all the new GPS-receivers speak might be a
>    little different to what the gpsdrive-NMEA parser understands.
>    we already had one issue with this the last year.
>  - the internal NMEA-parse (at least had) some severe buffer overflow
>    chances
>  - We would have to update the same code as the GPS people do.
>    And I think the gpsd people are doing a good job with their project.
>    And I didn't want to do the work twice. This was also the reason i
>    removed the really old copy of gpsd which was inside GPSDrive.
>    I know I myself had some problems compiling gpsd on my boxes( arm
>    and Debian) (because of the dbus(-1) dependency), but I hope this
>    will be solved in the near future.
>  - With a gpsd in between we could easily add another daemon which can
>    for example read speed info from the Car-Can-Bus and GPSDrive
>    wouldn't have to know anything different if you have a can-bus
>    adapter or not. But GPSDrive would get position and speed info
>    even with no or bad Satellite reception.
>  - gpsd can also read direct-Garmin and direct-Sirf which are (as what I
> know)
>    more precise than NMEA
>  - with gpsd more than one application can connect to your gps. This
>    would for example: kismet, a track logger, a photo application with
>    position addition, ...
> ===========================================================================
>=
>
> On Sat, 2007-02-03 at 02:50 +0100, J.D. Schmidt wrote:
> > Guenther Meyer skrev:
> > > one other thing comes to my mind, joerg:
> > > as almost all gps-receivers should work more or less with gpsd, is the
> > > built in serial support in gpsdrive still needed, or could it be
> > > removed?
> > >
> > > guenther
> >
> > IMHO the serial support should be left IN GPSdrive, not removed.
> > That way if one runs on a limited system memorywise, and aren't going to
> > be running any other apps that should access the GPS, one can still run
> > GPSdrive.
> >
> > GPSD is a benefit only, if you need to run multiple apps that should
> > access a GPS.
> > Being able to use GPSDrive without other packages running, with a
> > straight NMEA input on a serial port is IMHO a big benefit of the
> > package.
> >
> > J.D. "Dutch" Schmidt
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-- 

Jörg (Germany, Munich)

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