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Re: [gpsd-users] 1PPS not working with RPi 3 B+ and Stretch
From: |
Gary E. Miller |
Subject: |
Re: [gpsd-users] 1PPS not working with RPi 3 B+ and Stretch |
Date: |
Thu, 19 Jul 2018 12:53:45 -0700 |
Yo Chris!
On Thu, 19 Jul 2018 15:36:03 -0400
Chris Smith <address@hidden> wrote:
> Thanks for the reply. You're right, I need to narrow in on the
> specific PPS issue.
>
> That said, here's what I have from a previous session... (gpsd
> running as root with -D4 switch)
OK, but I asked several questions of you, still unanswered.
> gpsd:PROG: KPPS:/dev/pps0 assert 1531920117.000122757, sequence:
> 6237, clear 0.000000000, sequence: 0 - using: assert
> gpsd:PROG: KPPS:/dev/pps0 Assert cycle: 1000000, duration: 0 @
> 1531920117.000122757
> gpsd:PROG: PPS:/dev/pps0 Assert cycle: 1000000, duration: 0 @
> 1531920117.000122757
So you have good PPS into gpsd.
> *gpsd:PROG: PPS:/dev/pps0 Assert ignored missing last_fixtime*
But your GPS does not have a valid time yet. No good time into
gpsd, then no time out of gpsd.
First, answet the other questions I asked. Then tell me if cgps, or
gpsmon, is showing a valid current timestamp. You may need to wait up
to 30 minutes after powering up the GPS to get a valid timestamp.
> gpsd:PROG: GNRMC sentence timestamped 132157.00.
See, bad time. Usually happens after a cold start, for up to 30 minutes.
> I've contemplated disabling the other modes,
Ah, what do you mean by 'mode'?
> but I have yet to successfully "talk" to the UM-220 III NL chip.
Still waiting for alink to that GPS.
> I'll run through your list and send that output back to you as soon
> as I get my microSD card re-imaged with the same build of Raspbian
> Stretch I was using originally.
I doubt that matters at all. gpsd could care less what OS and OS version
it runs on.
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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- [gpsd-users] 1PPS not working with RPi 3 B+ and Stretch, Chris Smith, 2018/07/19
- Re: [gpsd-users] 1PPS not working with RPi 3 B+ and Stretch, Chris Smith, 2018/07/20
- Re: [gpsd-users] 1PPS not working with RPi 3 B+ and Stretch, David J Taylor, 2018/07/20
- Re: [gpsd-users] 1PPS not working with RPi 3 B+ and Stretch, Gary E. Miller, 2018/07/20
- Re: [gpsd-users] 1PPS not working with RPi 3 B+ and Stretch, Chris Smith, 2018/07/20
- Re: [gpsd-users] 1PPS not working with RPi 3 B+ and Stretch, Gary E. Miller, 2018/07/20
- Re: [gpsd-users] 1PPS not working with RPi 3 B+ and Stretch, Chris Smith, 2018/07/20
- Re: [gpsd-users] 1PPS not working with RPi 3 B+ and Stretch, Gary E. Miller, 2018/07/20
- Re: [gpsd-users] 1PPS not working with RPi 3 B+ and Stretch, Chris Smith, 2018/07/20
- Re: [gpsd-users] 1PPS not working with RPi 3 B+ and Stretch, Gary E. Miller, 2018/07/20