Re: [chrony-users] Using gpsd

[David Campbell <dcampbell24@xxxxxxxxx>]

I missed the "For example" bit, thanks for the clarification.

Reading the documentation again, I only can get the first example to work, so there is no delay or offset.

# First option
refclock SOCK /var/run/chrony.ttyS0.sock refid GPS

# Second option
refclock PPS /dev/pps0 lock NMEA refid GPS
refclock SOCK /var/run/chrony.clk.ttyS0.sock offset 0.5 delay 0.1 refid NMEA noselect

On 3/19/24 17:39, Bill Unruh wrote:

>       
>       On Tue, 19 Mar 2024, David Campbell wrote:
>       
>       
> > [CAUTION: Non-UBC Email]
> >         
> >       
>       ...
>       
> > Also, the device path given by chrony is
> >         out of date and the one given by gpsd works: that is
> >         "/run/chrony.XXXX.sock" instead of
> >         "/var/run/chrony.clk.XXXX.sock". If I am wrong about the paths,
> >         I don't know how chrony works, but only the former works for me.
> >         
> >         
> >         
> >       
>       man chrony.conf
>       
>       
>             SOCK
>       
>                      Unix domain socket driver. It is similar to the SHM
>       driver, but
>       
>                      samples are received from a Unix domain socket
>       instead of shared
>       
>                      memory and the messages have a different format.
>       The parameter is the
>       
>                      path to the socket, which chronyd creates on start.
>       An advantage over
>       
>                      the SHM driver is that SOCK does not require
>       polling and it can
>       
>                      receive PPS samples with incomplete time. The
>       format of the messages
>       
>                      is described in the refclock_sock.c file in the
>       chrony source code.
>       
>       
>                      An application which supports the SOCK protocol is
>       the gpsd daemon.
>       
>                      The path where gpsd expects the socket to be
>       created is described in
>       
>                      the gpsd(8) man page. For example:
>       
>       
>                          refclock SOCK /var/run/chrony.ttyS0.sock
>       
>       
>       See the words "For example:? Ie, the man page says to use what
>       gpsd says the the
>       
>       path is.
>       
>       
>       Note that path could well be different for different versions of
>       Linux.
>       
>       
> >         
> >       
>       
>