Re: [gpsd-users] SemPiTernal - Bounding PPS uncertainty

[Eric S. Raymond]

David J Taylor <address@hidden>:
> From: Eric S. Raymond
> 
> We need the same information for the Uputronics HAT.
> ================================
> 
> The Uputronics delivers a 100 ms positive pulse with the leading edge at the
> second boundary.  It's correctly detected by the stock distribution of
> Raspbian Wheezy and Jessie.  There is no detection of the trailing edge.
> 
> sudo ppstest /dev/pps0 =>
> 
> trying PPS source "/dev/pps0"
> found PPS source "/dev/pps0"
> ok, found 1 source(s), now start fetching data...
> source 0 - assert 1418933982.9980424, sequence: 970 - clear 0.0000000,
> sequence: 0
> source 0 - assert 1418933983.9980454, sequence: 971 - clear 0.0000000,
> sequence: 0
> 
> This was shortly after booting.

Thanks, that's useful.
-- 
                <a href="http://www.catb.org/~esr/";>Eric S. Raymond</a>