Re: [gpsd-dev] Heads up, GPSD release 3.12 is imminent

[Eric S. Raymond]

Hal Murray <address@hidden>:
> I've lost my touch or something.  I haven't been able to make it fail today.  
> It's been running fine for several hours.

That is weird.  And not good.

> Poking around with gpsmon...
> I've seen a PPS-offset of -1422231249.00004
> (The 4 is overriding the | at the right boundary of box.)
> It flips back and forth between normal and crazy like above.  I haven't seen 
> a pattern of good/bad.  Just wait a few seconds and I get a bad one.  The 
> above is a typical bad one.  I think all the bad ones have started with 
> -14xxx and had the decimal point in the same place.
> 
> The GPS hardware is a MR-350P going through a TAPR FAT-PPS pulse stretcher 
> and then through a splitter.  The FAT-PPS makes a 100 ms pulse.  (The raw PPS 
> signal on the MR-350P is only 1 microsecond wide.)
> 
> The serial string is offset by roughly 1/2 second.  I wouldn't be surprised 
> to see it fall on either side of the middle of the second.  That may be the 
> thing that has changed: the timing on the serial strings sweeps over a 100 ms 
> range with a time scale of many hours.
> 
> It would be nice if the PPS line in the log file included the offset or a 
> time stamp.

Hey, Gary!  Can you do that?
-- 
                <a href="http://www.catb.org/~esr/";>Eric S. Raymond</a>