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Re: gpsd g10de777bb vs Jackson Labs Micro JLT


From: Gary E. Miller
Subject: Re: gpsd g10de777bb vs Jackson Labs Micro JLT
Date: Thu, 12 Aug 2021 16:57:17 -0700

Yo Daniel!

> An svid of 201 is very illegal.  So should be easy to find.
> 
> It came from this:
> 
> $GAGSV,2,1,08,301,26,315,40,304,9,225,37,307,12,45,33,318,23,75,41*53
> $GAGSV,2,2,08,319,66,223,39,320,0,0,35,321,78,312,43,327,46,137,40*58
> 
> Which is a usage of GAGSV that gpsd have never seen and is not
> compliant with wgat I think I know about NMEA 4.10.  But, of course,
> I do not have the actual standard.
> 
> Since it so clearly conflicts with how other vendors use it, it
> should be not hard to code it as a quirk.

QUirk handled in git head.

Also patched for some other nonstandard behavior.  Their doc details
other nonstandard GAGSV and GNGGA, behavior not patched.

I expect there to be other problems with their firmware.

Sloppy work on their part.

Please test, and file a bug with Jackson Labs.  Their doc shows
they do not understand how NMEA wants this done.

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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