Re: Problems with miss-behaving uBlox Module

[Gary E. Miller]

Yo Andreas!

On Tue, 30 Mar 2021 04:52:10 +0000
Neustifter Andreas <Andreas.Neustifter@kapsch.net> wrote:

> > From: gpsd-dev
> > <gpsd-dev-bounces+andreas.neustifter=kapsch.net@nongnu.org> On
> > Behalf Of Gary E. Miller - Sent: Montag, 29. März 2021 20:27
> >
> > Yo Neustifter!  
> Andreas is fine...

Claws-mail does that automagically.  I'll over ride.

> > What gpsd version?  How was it built?  
> 
> Sorry, should have mentioned that: it's a 3.21, cross compiled for
> x86 on a 64-bit Debian 9 with custom RTCM packet handling. No
> modifications to the parsing though.

Anything you care to submit to gpsd?

> > > After investigations with strace we found that the UBX-NAV-PVT
> > > message sometimes reports a length of zero. This leads to the
> > > lexer not working and the lexer-buffer filling up until an error
> > > occurs and the buffer is reset. Attached a strace output of an
> > > offending message.  
> >
> > The lexer should be able to handle UBX lenght zero.  Can you
> > provide a serial capture of the u-blox binary stream doing that?  
> 
> How would you like me to do that? The device is connected via USB on
> a tty, unfortunately this only happens with an update rate of at
> least 5 Hz and then only seldomly. Providing a full trace might not
> be that useful.

The way to grab data:
        gpspipe -R -x 300 > raw.log

The -R means save the super raw (binary data).
The -x 300 means 5 minutes worth.

Then you can use use "ubxtool -f ra.log" to see what you captured.


> > > Has anyone else experienced this kind of issues?  
> >
> > Not me.  
> 
> Yes I figured, couldn't find anything so I thought it doesn't hurt to
> ask.

Someone has to be first.  And maybe it is now fixed.

> > > The information contained in this e-mail message is privileged and
> > > confidential and is for the exclusive use of the addressee.  
> >
> > Seriously?  You know this is a public email list with public
> > archives?  
> 
> Seriously? Do we have to do this song-and-dance every time I post to
> this mailing list? You know that this is automatically attached by
> the mail server, is boilerplate and I can't remove it?

How about you just shoot your idiot email admin once, and be done with it?

Otherwise you make the rest of the world suffer.

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        gem@rellim.com  Tel:+1 541 382 8588

            Veritas liberabit vos. -- Quid est veritas?
    "If you can't measure it, you can't improve it." - Lord Kelvin

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