[Thumbgps-devel] Navisys GR-601W

[Gary E. Miller]

Yo Jim!

On Mon, 24 Sep 2012 21:04:14 -0500
Jim Thompson <jim at netgate.com> wrote:

> ntpd won't enable the PPS stuff, because the ioctl to 'discover' same
> fails.

Thus one uses gpsd.

> covered on-list back in June/July

Moot.

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97701
	gem at rellim.com  Tel:+1(541)382-8588

> On Sep 24, 2012, at 8:58 PM, "Gary E. Miller" <gem at rellim.com> wrote:
> 
> > Yo Jim!
> > 
> > On Mon, 24 Sep 2012 20:49:42 -0500
> > Jim Thompson <jim at netgate.com> wrote:
> > 
> >> 
> >> On Sep 24, 2012, at 5:32 PM, Gary E. Miller <gem at rellim.com> wrote:
> >> 
> >>> Yo Jim!
> >>> 
> >>> On Sun, 23 Sep 2012 00:07:43 -0500
> >>> Jim Thompson <jim at netgate.com> wrote:
> >>> 
> >>>> They don't work that we'll on FreeBSD. 
> >>> 
> >>> Really?  First I've heard of it.  What's the issue?
> >> 
> >> In a word: jitter
> > 
> > And how much jitter?  The lack of RFC2783 should not be noticeable
> > since the jitter on the USB serial is so large.  RFC2783 helps in
> > the micro Second range and the USB serial is in the milli Second
> > range.
> > 
> > So with, and without you are going to get about 1 milli Second
> > jitter.
> > 
> > So, what problem are you pointing up with *BSD?
> > 
> >> Compare:
> >> http://fxr.watson.org/fxr/source/dev/uart/uart_core.c?v=FREEBSD9
> >> and
> >> http://fxr.watson.org/fxr/source/dev/sio/sio.c?v=FREEBSD9
> >> and
> >> http://fxr.watson.org/fxr/source/pc98/cbus/sio.c?v=FREEBSD9
> >> 
> >> to anything found in
> >> 
> >> http://fxr.watson.org/fxr/source/dev/usb/serial/?v=FREEBSD9
> > 
> > Not sure what you are trying to show me.
> > 
> > RGDS
> > GARY
> > ---------------------------------------------------------------------------
> > Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR
> > 97701 gem at rellim.com  Tel:+1(541)382-8588
> 



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