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Re: [gpsd-users] NTP1 keeps going away.


From: David Willmore
Subject: Re: [gpsd-users] NTP1 keeps going away.
Date: Thu, 9 Nov 2017 15:53:49 -0500

Is that so?  Clever.  I guess I was living back in the day when PPS
was brougth in on a modem control line and triggered an IRQ and were
were limited to the which edge we could use due to the RS232 hardware.

Glad to hear it's more flexable now!  That may save me an inverter. ;)

On Thu, Nov 9, 2017 at 3:50 PM, Gary E. Miller <address@hidden> wrote:
> Yo David!
>
> On Thu, 9 Nov 2017 15:42:29 -0500
> David Willmore <address@hidden> wrote:
>
>> Are you sure which edge of the 1 PPS signal is the timing indicator?
>> If you're using the wrong polarity (falling vs rising edge), then you
>> might be seeing strange results.
>
> gpsd autodetects the correct edge.  No way to override it.
>
>> But that doesn't account for the
>> multiple pulses/sec.
>
> Easy, many GPS allow 5 PPS.  He just needs to reconfigure his GPS for
> 1 PPS.  Which often means crafting a magic string to send to it.
>
> 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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