Re: GPSd/NTPd timesync issue in JSON mode

[Gary E. Miller]

Yo Roger!

On Tue, 6 Sep 2022 06:55:38 +0000
Roger Oberholtzer <Roger.Oberholtzer@ramboll.se> wrote:

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No ads please.

> > I actually don't need the 10Hz update rate for the time sync, but
> > when using the device also for location based event triggering in a
> > vehicle. What do you actually mean by 10Hz mode is a lie anyway?
> > The GPS module I am using is at least from its specs capable of
> > running with 10Hz.  
> 
> I have the same use case. We collect GPS/NMEA data in a vehicle for
> position and orientation. And we want time syncd as well. Our issue
> is that gpsd seems to get confused when certain sentences arrive at
> more than 1 Hz (PPS rate). It seems to confuse it's notion of a group
> of records that are somehow related.

Partly because at >1HZ many receivers are confused in what they send.
No two models send data the same way.  Depending on your receiver, you
can configure your receiver to send easier to parse data.

If you can send logs, we can look at it.

We can't fix what we can't see.

> This has changed in more recent releases of gpsd. Time sync works in
> 3.17. But not in 3.23.

3.17 is 5 years old.  3.23 is over a year old.  Please test 3.24.

> I fear I am hijacking this discussion. But then again it could be
> related as it is a time sync problem.

Feel free to fork the discussion, but so far, seems on topic.

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

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