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Re: [gpsd-dev] Status NMEA2000


From: Eric S. Raymond
Subject: Re: [gpsd-dev] Status NMEA2000
Date: Tue, 27 Jan 2015 15:17:30 -0500
User-agent: Mutt/1.5.23 (2014-03-12)

Hal Murray <address@hidden>:
> 
> address@hidden said:
> > OK, so I think this means the cp210x driver doesn't support TIOCMIWAIT and
> > is returning EINVAL on the attempt.  Annoying but harmless.
> 
> > The meatball-surgery way to prevent this message would be to disable
> > starting the PPS thread on USB devices. But we have a PPS device - the
> > Macx-1 - that this  would disable. 
> 
> Why not just try it, and if you get an error, just ignore it rather than 
> print an error message?  (or change it to some debugging level)

I am doing that and better.  I've added a message at LOG_PROG level that 
is a positive confirm when the ioctl() succeeds, and I've added a paragraph
to the "Enabling PPS" section of the Time Service HOWTO telling the adventurer
what to look for when troubleshooting. 
-- 
                <a href="http://www.catb.org/~esr/";>Eric S. Raymond</a>



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