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Re: How to feed 1PPS to GPSD from GPIO pin
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From: |
Gary E. Miller |
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Subject: |
Re: How to feed 1PPS to GPSD from GPIO pin |
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Date: |
Thu, 20 Jul 2023 11:05:20 -0700 |
Yo Jatinder!
On Wed, 19 Jul 2023 11:27:59 -0700
Jatinder <jatinder001300@gmail.com> wrote:
> We would like to feed 1-pulse-per-second (1PPS) to Chrony using GPSD
> SHM not PPS.
Fairlu common. I prefer the socket method.
> ppstest /dev/pps1
> trying PPS source "/dev/pps1"
> found PPS source "/dev/pps1"
> ok, found 1 source(s), now start fetching data...
> source 0 - assert 1689721508.999999321, sequence: 527 - clear
> 0.000000000, sequence: 0
Good.
> We are running GPSD using systemd and given is the configuration file
> being used:
Systemd(umb) is not preferred, but can work.
> DEVICES="/dev/pps1"
gpsd needs both GPS input and pps. You have no GPS device, so gpsd will
do nothing.
> Output of gpsmon
gpsmon is unmaintained, and was only for developers. Please use cgps, xgps,
etc.
> {"class":"VERSION","release":"3.17","rev":"3.17"
Oh, my. 3.17 is 6 years old! Update to something from this decade.
Next time, save yourself a lot of work and just run gpsdebuginfo and
send us the results.
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
gem@rellim.com 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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