[LinuxPPS] Synchronizing a ZDA message with NTP using linuxPPS

[Udo van den Heuvel]

On 2010-03-20 17:31, Divi.Oillo at ifremer.fr wrote:
> Does it mean that ntp is working with PPS?

Nope.
Reachability should go to 377, etc.


After connecting the gps and booting the right kernel etc please verify
that the kernel sees pps, by e.g.
# cat /sys/devices/virtual/pps/pps0/assert
# cat /sys/devices/virtual/pps/pps0/assert
etc

You should see increasing numbers like:

# cat /sys/devices/virtual/pps/pps0/assert
1269103484.000034273#33742
# cat /sys/devices/virtual/pps/pps0/assert
1269103566.000038014#33824

After that you could start ntpd, but please provide at least one means
for ntpd to know what time belongs to a PPS pulse.
E.g. configure an external server as a time source.

Udo