| Re: [chrony-users] getting chrony to work with gpsd on raspbian jessie with gps hat |
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I'm sorry for the double negative.
I was in the middle of a paste.
I need to proofread my replies better.
> Sent: Monday, February 05, 2018 at 4:24 PM
> From: "Bill Unruh" <unruh@xxxxxxxxxxxxxx>
> To: chrony-users@xxxxxxxxxxxxxxxxxxxx
> Subject: Re: [chrony-users] getting chrony to work with gpsd on raspbian jessie with gps hat
>
> > now it seems to lock on PPS1, but I don't think PPS1 is not a valid source. Sorry, you double negative is completely confusing. It looks to me like pps1 is a fine source and so does chrony. What problem do you have with it? > here's the results for chronyc sources: > > 210 Number of sources = 2 > MS Name/IP address Stratum Poll Reach LastRx Last sample > =============================================================================== > #? GPS 0 4 0 1192 -43.4s[ -43.7s] +/- 200ms > #* PPS1 7 4 377 20 +9ns[ +773ns] +/- 629ns > > > > > >> Sent: Monday, February 05, 2018 at 6:03 AM >> From: "Miroslav Lichvar" >> To: chrony-users@xxxxxxxxxxxxxxxxxxxx >> Subject: Re: [chrony-users] getting chrony to work with gpsd on raspbian jessie with gps hat >> >> On Fri, Feb 02, 2018 at 11:35:42PM +0100, Charles Muggen wrote: >>> # set larger delay to allow the NMEA source to overlap with >>> # the other sources and avoid the falseticker status >>> refclock SHM 0 refid GPS precision 1e-1 offset 0.9999 delay 0.2 >>> refclock SHM 1 refid PPS precision 1e-9 >> >> If you are using the SHM 1 source, which is based on PPS with gpsd, >> I'd suggest to either remove the first line or add noselect to it. >> >> You could also use the PPS device directly with SHM 0, e.g. >> >> refclock SHM 0 offset 0.5 delay 0.2 refid NMEA noselect >> refclock PPS /dev/pps0 lock NMEA refid GPS >> >>> I made a change to my /boot/config.txt >>> I had to add a line that says >>> dtoverlay=pps-gpio,gpio=4 >>> This points the PPS server to pin 4 of the GPS HAT. >>> >>> hmmm, maybe the thing is working... but should the PPS show an asterisk "*"? >> >> How is gpsd started? With a GPIO PPS, I think it needs to be started >> with both devices: serial (e.g. /dev/ttyS0) and PPS (e.g. /dev/pps0). >> >> -- >> Miroslav Lichvar >> >> -- >> To unsubscribe email chrony-users-request@xxxxxxxxxxxxxxxxxxxx >> with "unsubscribe" in the subject. >> For help email chrony-users-request@xxxxxxxxxxxxxxxxxxxx >> with "help" in the subject. >> Trouble? Email listmaster@xxxxxxxxxxxxxxxxxxxx. >> >> > > -- > To unsubscribe email chrony-users-request@xxxxxxxxxxxxxxxxxxxx > with "unsubscribe" in the subject. > For help email chrony-users-request@xxxxxxxxxxxxxxxxxxxx > with "help" in the subject. > Trouble? Email listmaster@xxxxxxxxxxxxxxxxxxxx. > -- To unsubscribe email chrony-users-request@xxxxxxxxxxxxxxxxxxxx with "unsubscribe" in the subject. For help email chrony-users-request@xxxxxxxxxxxxxxxxxxxx with "help" in the subject. Trouble? Email listmaster@xxxxxxxxxxxxxxxxxxxx.
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