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Re: [gpsd-dev] What is our current bug state?

From: Gary E. Miller
Subject: Re: [gpsd-dev] What is our current bug state?
Date: Mon, 2 Feb 2015 15:13:37 -0800

Yo Hal!

On Mon, 02 Feb 2015 14:12:21 -0800
Hal Murray <address@hidden> wrote:

> The symptom is that ntpd is seeing 20 ms of fuzz on a JSON connection
> that should be using PPS.

As soon as I can see ntpd use GPSD_JSON I'll work on it directly.  I've
never seen it work at all.

Another of my complaints about the new GPSD_JSON driver is it will
flip-flop from GPS serial time to PPS time and back with no warning.

Note this in refclock_gpsdjson.c:

        /* now aggregate TPV and PPS -- no PPS? just use TPV...*/

That will lead to mysterious problems like 20mSec jumps.

And note that code never reports the big decision it just made.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97701
        address@hidden  Tel:+1(541)382-8588

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