[gpsd-dev] refclock 28 gone wacky on me

[Gary E. Miller]

Yo Hal!

On Thu, 09 Jun 2016 20:46:58 -0700
Hal Murray <hmurray at megapathdsl.net> wrote:

> esr at thyrsus.com said:
> > That's odd.  The normal semtence budget including GPGSV should fit
> > inside a second.  Are you getting some kind of $PMTK thing that
> > pushes it over?   
> 
> I'm using gpsmon to watch the output.  There is a pause every
> second.  That's measuring by eyeball.
> 
> Here is a typical second:
> 
> ------------------------------------- PPS
> ------------------------------------ -
> (49) $GPGSA,A,3,25,05,29,21,20,,,,,,,,2.7,1.6,2.2*38
> (70)
> $GPGSV,3,1,12,20,78,095,26,29,72,090,28,21,51,288,20,04,41,290,20*7F
> (68)
> $GPGSV,3,2,12,18,36,210,,05,32,047,26,25,28,190,14,26,28,306,07*7B
> (64) $GPGSV,3,3,12,15,24,131,,13,19,093,,16,08,326,,31,00,258,22*7E
> (72)
> $GPRMC,034045.787,A,3726.0553,N,12212.2633,W,004.3,175.6,100616,,,A*75
> (40) $GPVTG,175.6,T,,M,004.3,N,008.0,K,A*07

Interesting.  Thanks!  Data we can use.

Your fractional time is .787.  Mike's was 0.940.

I can see that 0.787 should work, and 0.940 problematic.

If yours shifted to 0.940 I bet you would also see failures.

Computation time in the GPS?

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at rellim.com  Tel:+1 541 382 8588
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