Re: [gpsd-users] pps on rpi

[Gary E. Miller]

Yo Wolfgang!

On Sun, 05 Mar 2017 12:04:17 -0800
Wolfgang S Rupprecht <address@hidden> wrote:

> "Gary E. Miller" <address@hidden> writes:
> Yo Gary!  Long time...
> 
> > I you are using TIOMCIWAIT on a RasPi you kernel is configured
> > wrong.  You should be using KPPS.  
> 
> I was having a dickens of a time with scons caching things as a slowly
> pieced together all the apt-gets I needed.  I thought I solved it by
> doing an "rm -f .sconsign.dblite" in my build script.

I hear you.  I just often do a new 'git clone'.

> There is a perms problem.  pps0 is root.root owned and 660.  Gpsd
> can't open it.

Since gpsd runs as root, why not?

> After changing it to 666 as a test gpsd can open it but complains that
> someone else has it open.  (which is correct)

Hmm, I do not know if two readers on pps0 is a problem or not?

> I run the brand-C ntp daemon (sorry, don't want to hurt anyone's
> feelings here).  It opens /dev/pps0 itself in the way I have it
> configured.  I had thought that pps0 would duplicate the output to all
> listeners but perhaps not.

I'm unclear why you would program NTPClassic or NTPsec to open pps0 
when you are using pps0.

RGDS
GARY
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Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        address@hidden  Tel:+1 541 382 8588

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