[time-nuts] precision timing pulse

paul swed paulswedb at gmail.com
Tue Nov 15 22:20:19 EST 2016


Exactly and counting gps seconds may be useful.
Anyhow will be curious to see what he is counting.

On Tue, Nov 15, 2016 at 9:25 PM, Chris Albertson <albertson.chris at gmail.com>
wrote:

> The PicDiv does something not needed for this use case.   It produces a
> nice usable output frequency.  You don't need that,  you only need to know
> when X number of cycles have completed.   It is an order of magnitude
> simpler problem.    Just count to X then stop, that's it.
>
> On Tue, Nov 15, 2016 at 2:21 PM, Bryan _ <bpl521 at outlook.com> wrote:
>
> > The author of PicDiv publishes the ASM code for his dividers. If fluent
> in
> > assembley(er) it's probably quite doable. Many of the examples have a ARM
> > or SYNC feature
> >
> >
> > http://www.leapsecond.com/pic/picdiv.htm
> >
> >
> > -=Bryan=-
> >
> >
> > ________________________________
> > From: time-nuts <time-nuts-bounces at febo.com> on behalf of Hal Murray <
> > hmurray at megapathdsl.net>
> > Sent: November 15, 2016 12:17 PM
> > To: Discussion of precise time and frequency measurement
> > Cc: hmurray at megapathdsl.net
> > Subject: Re: [time-nuts] precision timing pulse
> >
> >
> > ciandjaburch at gmail.com said:
> > > How do I get a pulse to start with a push button and then stop for
> > example
> > > 500 or 10,000 seconds later?
> >
> > How about another PIC?
> >
> >
> > --
> > These are my opinions.  I hate spam.
> >
> >
> >
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>
> --
>
> Chris Albertson
> Redondo Beach, California
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