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Re: [gpsd-dev] U-Blox M8, PPS and NTPsec - GPSd logic enhancement


From: Dustin Marquess
Subject: Re: [gpsd-dev] U-Blox M8, PPS and NTPsec - GPSd logic enhancement
Date: Thu, 4 Apr 2019 22:24:27 -0500

On Thu, Apr 4, 2019 at 10:13 PM Gary E. Miller <address@hidden> wrote:
>
> Yo Martin!
>
> On Thu, 4 Apr 2019 14:56:08 -0400
> Martin Boissonneault <address@hidden> wrote:
> >    Also, I think I should stop using the PPS refclock with the PPS
> > SHM one. It might confuse NTPd. What do you think?
>
> Some find it useful to compare the different ways to read the GPS
> time.  Just in case one goes wacky.  But all you need is SHM() and
> some network chimers to catch bad days.

Which, on a side note, is something I've wondered about...

Is there a reason to let GPSd handle PPS and pass it to NTPsec using
SHM vs just using the pps reflock and /dev/pps0 directly inside of
NTPsec?

-Dustin



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