[LinuxPPS] A question about the PPS device.

[clemens at dwf.com]

Here is a note (slightly edited) that I sent to Rodolfo,
about installing the N_PPS code in the ONCORE driver.
He suggested that I send it to the whole list in case anyone out there
has any ideas...

---

> Here is a correct statement of the problem:
> 
> I open /dev/ttyS0 RW, no problem.
> I then set the line discipline,  no problem.
> 
> Now in the SAME process I try opening /dev/pps1 RW, that fails.
> If I try RO I can open it.
> 
> Strange.
> 
> If however I do the first two steps in one process (ttyctrl),
> I CAN open /dev/pps1 RW in a 2nd process (ntpd).
> 
> Stranger.
> 
> I doubt that makes any sense, but thats what I saw.  I just changed
> O_RDWR to O_RDONLY in the ONCORE driver and it ran.

Anyone have any ideas?

-- 
                                        Reg.Clemens
                                        reg at dwf.com