[LinuxPPS] refclock_nmea patch

[Rodolfo Giometti]

On Tue, Oct 23, 2007 at 06:26:53PM +0200, Udo van den Heuvel wrote:
> I see in the LinuxPPS source that a port is checked: First we check if
> current device is a PPS valid PPS one.
> What is the use? (if this test fails on my /dev/gps0?)

Just to verify that the supplied device is a PPS source. It fails
because your /dev/gps0 is a serial line and _not_ a PPS source.

> So what use is it then to make /dev/gps0 if we have an automagic /dev/pps0?

Beacuse /dev/pps0 is _only_ a PPS source so you cannot get GPS/NMEA
data from it. That's why you need both /dev/gps0 and /dev/pps0.  The
former is used to collect GPS/NMEA data while the latter is is used to
collect PPS data.

> (just trying to understand)

Hope I was clear now. :)

Does your code work now? :D

Rodolfo

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