[time-nuts] GPS question

Chris Kuethe chris.kuethe at gmail.com
Fri Apr 6 15:04:34 EDT 2007


On 4/6/07, Hal Murray <hmurray at megapathdsl.net> wrote:
> > I just found three programs that may be of interest to others.
>
> There is also gpsd at http://gpsd.berlios.de/
>
> It doesn't run on Windows.  It's mostly for navigation rather than
> timekeeping, but it talks to many GPS units and it's open source (and clean
> code) in case you are trying to figure out how to talk to your gizmo and need
> a few hints.

Heh. I was waiting for someone to mention that.

As Hal correctly points out, we are mostly focused on navigation, but
that's probably useful in this case. Convert whatever protocol the
receiver speaks into something easier to parse, and log the results
for a day/week/fortnight/month.

There are some hooks in gpsd for driving time daemons; we support
ntp.org's SHM time source, and OpenBSD's timedelta sensor. Apparently
the SHM mechanism is a little bit unhappy right now; that's being
investigated, but the regular protocol conversions should be working.

CK

-- 
GDB has a 'break' feature; why doesn't it have 'fix' too?




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