RE: Re: [Paparazzi-devel] LEA-5H Module Freeze after 30 seconds

[antoine . drouin]

Hi

Paparazzi already has the option of accepting WGS84 coordinates ( see
sw/airborne/latlong.c ). Define GPS_USE_LATLONG and configure your module to
send UBX_NAV_POSLLH messages. Now about NMEA, if you have nothing better to do
with your CPU cycles than to parse ASCII, go for it...

hth

Poine


Quoting address@hidden:

> David,
> The issue of UTM has nothing to do with NMEA vs. UBX protocols.  Also the 30
> second time out has nothign to do with the LPC side of the tunnel.  The LPC
> does just that, tunnel data.  Nothing else is running(no airborne software or
> GPS code).  I thought I read somewhere that the 5H chips had somethign
> different with the pinout.  Im guessing not.  I dont have time right now to
> look through that link Martin posted, but maybe it has the answer.
>
> AJ
>
> PS.  There is an NMEA parser out there, someone on the list has it.
>
>
> -------- Original Message --------
> Subject: RE: Re: [Paparazzi-devel] LEA-5H Module Freeze after 30
> seconds
> From: <address@hidden>
> Date: Tue, April 22, 2008 9:58 am
> To: <address@hidden>
>
>
> Hi Martin,
>
> Very good to know. Maybe Paparazzi does something with this at 30sec and
> freezes the tunnel and not the LEA-5H freeze? I just saw u-center stop
> responding but that could have been the LPC freeze not the LEA-5H.
>
> This is a good example where not having the option in software for NMEA is
> going to be a problem. LEA-4P will not be available forever. This is why I
> chose to test the LEA_5H.
>
> Can I help in some way?
>
> David Conger
>
>
>
> From: Martin Mueller <address@hidden>
> Date: 4/22/08 16:19Subject: Re: [Paparazzi-devel] LEA-5H Module Freeze after
> 30 seconds
>
> Hi David,
>
> > On the downside. After many tests it freezes exactly 30 seconds after power
> on every time. It exactly 30 seconds every time. I did many tests to be sure.
> >
> > Also, it will freeze instantly upon dong any "send" command. Change any
> setting and hit "send" it will lock up.
> >
> > Any ideas? This module is amazing. Compared to an LEA-4P it seems a huge
> leap in sensitivity...there's just this little issue of only working for
> 30sec to overcome ;]
>
> the 4->5 migration application note
> http://www.u-blox.com/customersupport/ublox5_doc.html says that the
> current LEA-5 software has "No UTM (Universal Transverse Mercator
> Projection)." This is probably not related to that 30s issue but means
> that we need some conversion for Paparazzi.
>
> Martin
>
>
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