[arm-allstar] Adding a Real Time Clock to the BBB

[Joel Jameson]

I wrote up how to connect the adafruit to the BBB 1.1 image, but with the
update to 1.2 I'm stuck on device overlays no longer working correctly.
Haven't had word back on the conundrum yet.



Cheers,
Joel
W0KGW

On Mon, Nov 24, 2014 at 6:43 PM, Mark Herson, N2MH <n2mh at n2mh.net> wrote:

> Doug,
>
> While you are at it, do you think you could include an ntp server running
> from a gps? I believe ADA Fruit has an inexpensive gps or one could use
> something like a Garmin 18. This approach might be desirable for some
> people and would also get around the accuracy issues with the real time
> clock module. Accurate top of second would come from the 1 PPS line and
> time/date would come from an NMEA sentence.
>
> 73, Mark, N2MH
>
> > Date: Mon, 24 Nov 2014 09:36:34 -0500
> > From: Doug Crompton <doug at crompton.com>
> > To: "arm-allstar at hamvoip.org" <arm-allstar at hamvoip.org>
> > Subject: [arm-allstar] Adding a Real Time Clock to the BBB
> > Message-ID: <BLU172-W14D2B7513047E0D3B3238BA720 at phx.gbl>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > I know at least one person has had a problem with accurate time on the
> > BBB running Allstar. He was not able to reach an ntp server. In most all
> > cases this will NOT be a problem but if for some reason you want to run
> > the BBB offline or you do not have ntp access due to blocking or for any
> > reason you could easily add a Real Time Clock to the BBB to achieve
> > accurate time.
> >
> > I built a clock and wrote a how-to detailing how to implement it in
> > Archlinux on the BBB. The cost is minimal coming in at under $10 for the
> > clock kit. This clock works fine and it appears to be accurate at least
> > at room temperature. I did no testing at temperature extremes. The method
> > of doing this is still somewhat experimental and there probably will be
> > changes as we go along on exactly how the clock is implemented in the
> > code but for now this is a viable option for those who have a need to add
> > it. Software support for this will be added to the next image release.
> > Again I want to emphasize that having this clock is NOT a requirement for
> > most all situations under which the BBB is used but you can certainly
> > choose to experiment and try it out if you like.
> >
> > The link to the how-to was added to the hamvoip.org web page. Here is a
> > direct link -
> >
> > http://www.crompton.com/hamradio/BBB_realtime_clock/
> >
> >
> > 73 Doug
> > WA3DSP
>
>
>
> _______________________________________________
>
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>
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>
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