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Re: GPS time sync with chrony and ESE serial device
From: |
Gary E. Miller |
Subject: |
Re: GPS time sync with chrony and ESE serial device |
Date: |
Wed, 4 Mar 2020 10:40:50 -0800 |
Yo Devren!
On Wed, 4 Mar 2020 13:08:26 -0500
Devren Yener <address@hidden> wrote:
> Thanks very much Gary for your help and advice! We were afraid we
> might have to buy new equipment, but I figured it's a simple enough
> signal, I'd be very surprised if there isn't some way to get it
> working in Linux.
With Linux there is always a way.
> (It works in Windows and DOS after all, with the
> manufacturer's ancient software... but I don't want to use these for
> a time server!)
You'd be surprised how well old machines can do NTP.
> Do you still think gpsd will not be able to work with the signal?
It could work. But someone would need to write a new driver for this
terse protocol. A lot of work just to avoid spending $100 for a
replacement.
If someone had the budget, and a serious need, I'd skip using gpsd.
A simple python program could read the simple serial data, check the
lock signal, then pass on the time to SHM(). The chronyd and/or ntpd
can read the shim with a simple configuration file change.
A good programmer familiar with the various parts could do it in a
day. A fair programmer unfamilar with the parts, but with guidance,
might take a week. All of a sudden $100 looks cheap.
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
address@hidden Tel:+1 541 382 8588
Veritas liberabit vos. -- Quid est veritas?
"If you can't measure it, you can't improve it." - Lord Kelvin
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- GPS time sync with chrony and ESE serial device, Devren Yener, 2020/03/03
- Re: GPS time sync with chrony and ESE serial device, Gary E. Miller, 2020/03/03
- Re: GPS time sync with chrony and ESE serial device, Devren Yener, 2020/03/04
- Re: GPS time sync with chrony and ESE serial device,
Gary E. Miller <=
- Re: GPS time sync with chrony and ESE serial device, Greg Troxel, 2020/03/04
- Re: GPS time sync with chrony and ESE serial device, Devren Yener, 2020/03/04
- Re: GPS time sync with chrony and ESE serial device, Gary E. Miller, 2020/03/04
- Re: GPS time sync with chrony and ESE serial device, Greg Troxel, 2020/03/04
- Re: GPS time sync with chrony and ESE serial device, David J Taylor, 2020/03/05
- Re: GPS time sync with chrony and ESE serial device, Devren Yener, 2020/03/05
- Re: GPS time sync with chrony and ESE serial device, David J Taylor, 2020/03/05
- Re: GPS time sync with chrony and ESE serial device, Gary E. Miller, 2020/03/05
- Re: GPS time sync with chrony and ESE serial device, Devren Yener, 2020/03/06
- Re: GPS time sync with chrony and ESE serial device, Gary E. Miller, 2020/03/06