[time-nuts] How to get PPS from ublox mini-PCI GPS to APU2 SoC serial port for ntpd

Hal Murray hmurray at megapathdsl.net
Thu Nov 10 05:44:46 EST 2016


tvb at LeapSecond.com said:
> The PIC's I use have essentially no jitter. If they generate a 1PPS the edge
> and the pulse width are perfect, down to picoseconds. The talk about "other
> stuff" and "priority" and "number of compares" and "ambiguity" is worrisome.
> It sounds like a design or coding flaw to me, like what happens when people
> try to do precise time with a high level language. 

It's fun to debug software with a scope.


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