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Re: [gpsd-dev] gpsd/ntpd

From: Henning Hakonsen
Subject: Re: [gpsd-dev] gpsd/ntpd
Date: Fri, 29 Jul 2016 07:03:52 +0000


Thanks for the reply. I got my program to feed ntpd with the PPS signal.

Now the only thing I am struggeling with is that I need to edit (linechange or something) ntp.conf file and restart ntp after boot.

Do you have any idea as why I need to do that? 

With kind regards,

Henning Håkonsen

Fra: Gary E. Miller <address@hidden>
Sendt: 28. juli 2016 20:56:17
Til: Henning Hakonsen
Kopi: address@hidden
Emne: Re: [gpsd-dev] gpsd/ntpd
Yo Henning!

> I am currently trying to send a PPS signal to gpsd or ntpd. I am
> using u-blox gps receiver for gps clock, but the PPS signal is
> hardwired to GPIO. Our software can get the PPS signal and I would
> like to signal ntpd with this signal over shared memory much like
> gpsd is.

If you are on a RasPi or BBB then check out the gpsd-time-service-howto.txt
in the tarball.  The solution is well documented.

There are important improvements to this in git head, so be sure to
try git head and not anything from your distro.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        address@hidden  Tel:+1 541 382 8588

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