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

[Paul]

Now I am even more confused. This does not seem to be like the Wiki. The
Wiki says
1. Compile
2. Put in userland links
3. Compile ppsctl and ppstest
4. ppsctl enable
5. Now you should see the asserts change (Mine doesn't)
 
Do you meen that I need to be running NTPD?


On Tue, 2007-10-30 at 13:13
 +0100, Rodolfo Giometti wrote:
> On Tue, Oct 30, 2007 at 11:18:54AM +0000, Paul wrote:
> > Even more for you.
> > I rebooted and used ppsctl to enable /dev/ttyS0
> > The assert flag was at zero and zero serial and did not change.
> > Now, to check if the port I had the plug in was correct I used minicom
> > to look at the NMEA data.
> > After shutting down minicom I checked the assert again which had changed
> > to show a sensible timestamp and a serial of 69, but still it did not
> > change.
> > So it seems as though the events are being registered while minicom is
> > running, but not otherwise.
> 
> These sound reasonable since the serial port is "enabled" only when an
> userland process opens it. Since your PPS source is connected with the
> serial line you cannot get PPS events till the serial port is not
> enabled/opened. Some GPS antenna also needs a special init sequence
> commands over serial line before starting PPS signal.
> 
> Ciao,
> 
> Rodolfo
>