[LinuxPPS] Kernel configuration and more ......

Paul paul at lavender-fam.net
Mon Oct 29 16:17:54 CET 2007


On Mon, 2007-10-29 at 15:04 +0100, Rodolfo Giometti wrote:
> On Mon, Oct 29, 2007 at 01:39:10PM +0000, Paul wrote:
> > First of all I compiled with the debugging messages. I got 4 events
per
> > second to the screen (this is why I need to know if debugging is for
the
> > PPS and/or GPS NMEA data).
> 
> Debugging are for both.

So I think the events I see are NMEA data, I can get the same if I
modprobe ktimer (and then rmmod ktimer before it sends me crazy)

> > I compiled exactly the same with no debugging.
> > The /sys/class/pps/pps0/{assert/clear} remain at 0.000
> > I checked the voltages on the serial plug and I saw the PPS pulses
on
> > the DCD pin. I checked with statserial (which actually looks at
voltages
> > on the serial pins) just to be sure I did not have a hardware
problem.
> 
> Looking at /proc/interrupts, do you see increments on the IRQ counter
> for the serial line?
> 

No the serial stays the same.

> Rodolfo
> 

I also tried ./ppsfind ktimer which does not do anything.

./ppstest /dev/pps0 just errors with timeouts.

Paul  




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