[time-nuts] Beaglebone NTP server

Frister frister at gmx.net
Tue Dec 9 08:57:08 EST 2014

Thanks for pointing this out David,
Compiling an new kernel was holding me back. I followed your instructions and
everything works beautiful. The PI that is running the PPS timekeeping with NTP
is serving as a VLF receiver as well. Taxing the poor CPU, but with
kernel PPS support
the NTP daemon has become way happier! (see attachment)

73, Frits W1FVB

On 12/8/14, David J Taylor <david-taylor at blueyonder.co.uk> wrote:
> From: Chris Albertson
> Really?   The PPS to GPIO interface is handles in user space?  It is not
> interrupt driven?
> In the implementations I've seen the critical real time work is done inside
> the PPS interrupt handler and then of course ntpd runs in userland and can
> take as much time as it needs
> =================================================
> Folkert's solution was very helpful, but there is now kernel-mode PPS
> support for a GPIO pin the current Raspberry Pi Linux - see:
>   http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html#easy
> I'm running that on a couple of systems here.
> Cheers,
> David
> --
> SatSignal Software - Quality software written to your requirements
> Web: http://www.satsignal.eu
> Email: david-taylor at blueyonder.co.uk
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