[LinuxPPS] linuxpps 2.6.32-rc8 question

[Jeff Angielski]

I have my PowerPC 85xx target connected to a GPS receiver that is 
generating a PPS which is in turn generating an interrupt on my host.

I am trying to figure out why my system clock is showing such a large 
discrepancy in time (10ms/s) and was wondering if anybody had any tips 
on tracking this down.

Does everybody runs this in a calibration mode to determine the drift of 
the local clock and then use adjtimex() to fix the offset?  The error is 
  so large that NTPD won't use it as a reference source.


[   22.059369] source pps_hwirq got cdev (254:0)
[   22.059375] new PPS source pps_hwirq at ID 0
[   22.059380] hwirq PPS source registered at 0
[   22.228028] PPS event on source 0 at 22.201737755
[   22.228036] capture assert seq #1 for source 0
[   23.218029] PPS event on source 0 at 23.191734665
[   23.218038] capture assert seq #2 for source 0
[   24.208034] PPS event on source 0 at 24.181744256
[   24.208042] capture assert seq #3 for source 0
[   25.198039] PPS event on source 0 at 25.171746939
[   25.198047] capture assert seq #4 for source 0
[   26.188042] PPS event on source 0 at 26.161752103
[   26.188051] capture assert seq #5 for source 0



-- 
Jeff Angielski
The PTR Group
www.theptrgroup.com