Yo Hal! On Thu, 09 Jun 2016 17:04:08 -0700 Hal Murray <hmur...@megapathdsl.net> wrote:
> > GPS module is a ST22, SkyTraq Venus 6 chipset.
> [ntpq -p shows PPS link off by a second.]
>
> It's a gpsd bug/quirk. I've seen the same thing on a PC with a Venus
> chip connected via USB.
>
> I mentioned it a month or two ago but it fell through the cracks.
Can you send me the output of this when it fails:
# gpsd -nND 9 /dev/ttyXXX |& fgrep PPS > gpsd.log
That tells me which path I need to check for errors.
> g...@rellim.com said:
> > I suggest 38400 or higher. 9600 or less would cause this exact
> > symptom.
>
> I thought gpsd was supposed to do the right thing.
gpsd does not know how backedup the OS serial buffer is. Just like
another buffer bloat problem.
> g...@rellim.com said:
> > Got a scope?
>
> I have one. I'm seeing a 10 microsecond pulse. One per second.
Well, then not the case at hand. the current problem is two edges
per second, 500 milliSec apart.
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
g...@rellim.com Tel:+1 541 382 8588
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