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Re: Malformed gpgsv

From: Gary E. Miller
Subject: Re: Malformed gpgsv
Date: Fri, 21 Feb 2020 11:24:52 -0800

Yo raaj!

On Fri, 21 Feb 2020 12:44:56 +0800
raaj lokanathan <address@hidden> wrote:

> I just wrote the driver for my gnss receiver.

Care to share?  Or is this a one way street?

> When I tested with the gnss simulator it was working fine.

Care to share what gnss simulator?

> But then with the gnss antenna it works and then it stops by showing
> like this.

Screen shots are not helpful.  Please send cut/paste of the text.

I think I see this:


Not sure what $PQ prefix is.  Care to share?

That is 14 fields.  The error message should have been all you need
to figure out the problem:

"malformed GPGSV - feildcount 14 % 4 != 0"

Take that and compare to the gpsd doc for xxGSV:

To summarize, xxGSV starts with 4 fixed fields, then 4 fields per sat.
So NUMFIELDS % 4 === 0, but your sentence fails.  So your sentence is
malformed and gpsd is properly ignoring it.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        address@hidden  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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