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Re: Help needed to configure and compile gpsd to run on a Raspberry Pi 4


From: Gary E. Miller
Subject: Re: Help needed to configure and compile gpsd to run on a Raspberry Pi 4 and NOT use systemd
Date: Thu, 14 Nov 2024 12:26:05 -0800

Yo tangoing.mill745@aceecat.org!

On Thu, 14 Nov 2024 10:53:42 -0800
"tangoing.mill745@aceecat.org" <tangoing.mill745@aceecat.org> wrote:

> On Wed, Nov 13, 2024 at 12:40:46PM GMT, Frank Nicholas wrote:
> 
> > My responses were in reply to the statement that you do not need to
> > use gpsd to use PPS with chrony, that chrony can use PPS directly.
> > That’s why I asked where do you get the time that the PPS signal is
> > indicating…  
> 
> The answer is that you need at least one other source, which can be a
> normal ntp server or a pool.

So when your 2 sources disagree, which is correct.  Minsane is 4 for
good reasons.

> This can be a high stratum and not always
> available. All chrony needs is to get the sense of the absolute time
> now and then.

chronyd can get that just fine from your GNSS receiver.

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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    "If you can't measure it, you can't improve it." - Lord Kelvin



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