[LinuxPPS] Mabe I get it now...

[clemens at dwf.com]

> > It is quite common with ntp (and the oncore driver) to put the following
> > in the dev file
> > 
> > ln -s /dev/oncore.serial.0 /dev/ttyS0
> > ln -s /dev/oncore.pps,0    /dev/ttyS0
> > 
> > linking BOTH the serial and the pps  devices used by the code to the 
> > same device.  This could equally well read
> > 
> > ln -s /dev/oncore.serial.0 /dev/ttyS0
> > ln -s /dev/oncore.pps.0    /dev/lp0
> > 
> > if the parallel interface were being used for the PPS signal,
> > the code expects it will be able to open these two devices.
> 
> Yes! In LinuxPPS you should do instead:
> 
>    ln -s /dev/oncore.serial.0 /dev/ttyS0
>    ln -s /dev/oncore.pps.0    /dev/pps0
> 
OK, mabe I understand what you are saying now.
Are you saying that /dev/pps0 is a 'new' (magic) device provided by linuxPPS
to get at the PPS data.  In fact it is reading data from /dev/ttyS0,  (or 
/dev/lp0
if the PPS device were a parallel device) but has this new name.
If one were to search sysfs, one would find it.

-- 
                                        Reg.Clemens
                                        reg at dwf.com