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Re: [gpsd-dev] [Patch Submission] $GPVTG w/magnetic course


From: teyrana
Subject: Re: [gpsd-dev] [Patch Submission] $GPVTG w/magnetic course
Date: Fri, 15 Jun 2018 17:15:30 -0400

Hey, Gary - 

I'm working on getting a better log file for you. The one I've been using for development is only about 30s, and doesn't have any startup messages.

> Also, did you have any luck replacing the deprecated GPGGA in your GPS output

We haven't been trying to.... should we? Why? What's the problem with GGA?

-DMW



Daniel Williams
address@hidden
858-220-8134 (Mobile)
github.com/teyrana
LinkedIn

On Thu, Jun 14, 2018 at 6:56 PM, Gary E. Miller <address@hidden> wrote:
Yo teyrana!

Can you submit about a 60 second capture file of your GPS output?
Hopefully with a nix of NO FIX, 2D and 3D fixes?  I'll add it to
the 'scon check' so we can see how changes affect your application.

I Just pushed a simple update to your patch.  It looks for the longer
GPVTG that has the mode field that your GPS lacks.  I commented out
where it does the MODE_SET, but that is easy to undo.

Now we are down to the essential issue that needs fixing: getting the
report to not clobber other, better ata (mode, eps, etc.).

My guess is that we'll have to dig into the cycle detetion logic in
nmea_parse() to get a good solution.  Yes, it is funcky in there, but
it is not black magic.

Also, did you have any luck replacing the deprecated GPGGA in your
GPS output

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

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