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

From: david
Subject: RE: Re: [Paparazzi-devel] LEA-5H Module Freeze after 30 seconds
Date: Tue, 22 Apr 2008 15:00:54 -0700

Thx AJ,

Ya, understood on the "tunnel"...I did a review of the pinouts before
even trying to have an LEA-5H Tiny2.11 created. I am still learning so
that UTM thing is something that would not have caught my eye. 

Now that we know it's there I'm fully willing to try and resolve it.
Then again David Carr implies there is no that is confusing. 

So, still trying to find out how/where I can help. That LEA-5H was truly
amazing, really, it was so sensitive. In a room where the LEA-4P took
5min to come up and get 4 satellites this LEA-5H had 4 so fast it
fantastic. Then just watching in that 30 seconds how fast it got the 3D
fix and the amount of updates it was doing. It seems leaps ahead of the
LEA-4P and worth resolving in the long run right? 

Just say what code to look at and I will start looking. Or what to
'grep' all the code looking for...

-David Conger
On Tue, 2008-04-22 at 10:02 -0700, address@hidden wrote:
> 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 
> 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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