| Re: [chrony-users] PPS correction not being applied |
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- To: chrony-users@xxxxxxxxxxxxxxxxxxxx
- Subject: Re: [chrony-users] PPS correction not being applied
- From: Brian Gieryk <ke6iyc@xxxxxxx>
- Date: Thu, 23 Feb 2017 17:10:08 -0700
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Relevant chrony.conf snipet:
# offline sources
refclock SHM 0 refid GPS precision 1e-1
refclock SHM 1 refid NMEA precision 1e-9
refclock SOCK /tmp/chrony.ttyS0.sock refid NMEA
refclock PPS /dev/pps0 poll 0 refid PPS lock NMEA
Sources output:
pi@raspberrypi:~ $ sudo chronyc sources
210 Number of sources = 5
MS Name/IP address Stratum Poll Reach LastRx Last
sample
===============================================================================
#* GPS 0 4 377 15-+1007us [-1476us]+/-100ms
#? NMEA 0 4 0 -+0ns [ +0ns]+/- 0ns
#? NMEA 0 4 0 -+0ns [ +0ns]+/- 0ns
#? PPS 0 0 0 -+0ns [ +0ns]+/- 0ns
^? 2610:20:6f15:15::27 0 8 0 -+0ns [ +0ns]+/- 0ns
pi@raspberrypi:~ $
I don't see anything unusual(?) in the log...
I am not an old hand at this......
Thank you!
Brian
>>
> On Feb 23, 2017, at 09:09, Bill Unruh <unruh@xxxxxxxxxxxxxx> wrote:
>
> You tell it to lock to NMEA. Do you actually have an NMEA refclock running?
> Ie you might want to show us what your complete chrony.conf is.
>
> Also in your sources, what sources are listed? Ie, what is the complete output of chronyc sources command.
>
> In the logging of the refclock, are there any entries? Do they give you a
> clue?
>
>
>
> William G. Unruh __| Canadian Institute for|____ Tel: +1(604)822-3273
> Physics&Astronomy _|___ Advanced Research _|____ Fax: +1(604)822-5324
> UBC, Vancouver,BC _|_ Program in Cosmology |____ unruh@xxxxxxxxxxxxxx
> Canada V6T 1Z1 ____|____ and Gravity ______|_ www.theory.physics.ubc.ca/
>
>> On Thu, 23 Feb 2017, Brian Gieryk wrote:
>>
>> Good morning.
>>
>> Running chrony 3.1, raspberry Pi 3 model B with the latest Raspbian Jessie.
>>
>> Have GPS working to set the clock with no issue.
>>
>> Have good PPS on /dev/pps0
>>
>> From searching the archives I have :
>> refclock PPS /dev/pps0 poll 0 refid PPS lock NMEA
>>
>> Appended to the end of /etc/chrony/chrony.conf
>>
>> Running chronyd produces no errors
>>
>> PPS shows in chronyc sources
>>
>> However the #? next to PPS never changes (48 hours so far) and there are no corrections.
>>
>> Any thoughts?
>>
>> Thank you all!
>>
>> Brian
>>
>> Sent from my iPhone
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