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Re: gpsd + chrony + pps

From: Stéphane Péneau
Subject: Re: gpsd + chrony + pps
Date: Thu, 18 Jun 2020 21:07:32 +0200
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0

Hi Gary!

I don't really have a problem as I can get pps in chrony with at least 3 methods, kpps, shm, socket :

Let's start with coarse time :

refclock SHM 0 refid GNSS offset 0.2 delay 0.2 noselect

Then i can add any of these 3 lines to add PPS, and it will work:

refclock SHM 1 lock GNSS refid PPS precision 1e-9
refclock SOCK /var/run/chrony.pps0.sock refid PPS2 lock GNSS
refclock PPS /dev/pps0 refid PPS3 lock GNSS

For the socket method, i can't use chrony.tty***.sock it doesn't work

But it is what it is indicated in the chrony documentation

Or in the gpsd documentation :

So my question is :
Is there a misunderstanding on my side, or is there a mistake in the documentation?


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