[time-nuts] Beaglebone NTP server
dan-timenuts at drown.org
Tue Dec 9 16:56:36 EST 2014
If you're using the pps-gpio module, the hardware can support "up to
Two Interrupt Inputs per Bank". So if you're not using the gpio for
anything else, any of the gpio should work.
If you want to use the timer hardware (and pps-dmtimer module), each
timer has an assigned pin.
Quoting Graham / KE9H <ke9h.graham at gmail.com>:
> For those of you that have gotten the BeagleBone Black up and
> running as an ntp server with the 1PPS signal input in kernel space,
> what gpio input pin is being used?
> I guess I am asking if the kernel "pps-gpio" has a specific preferred pin,
> or whether it can be mapped to any available gpio pin.
> --- Graham / KE9H
> On Tue, Dec 9, 2014 at 11:18 AM, Bob Darlington <rdarlington at gmail.com>
>> Hourly cron jobs, perhaps?
>> On Tue, Dec 9, 2014 at 8:04 AM, David J Taylor <
>> david-taylor at blueyonder.co.uk> wrote:
>> > 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
>> > ==============================================
>> > Oh, yes! That's much better, Frits! Delighted to have helped!
>> > (Although it now shows up an hourly periodicity - any idea what might be
>> > causing that?)
>> > 73,
>> > David GM8ARV
>> > --
>> > SatSignal Software - Quality software written to your requirements
>> > Web: http://www.satsignal.eu
>> > Email: david-taylor at blueyonder.co.uk
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