[LinuxPPS] no pps?
Udo van den Heuvel
udovdh at xs4all.nl
Thu Mar 26 16:33:26 CET 2009
Hello,
Something strange occurred:
# ntpq -pn
remote refid st t when poll reach delay offset
jitter
==============================================================================
127.127.1.0 .LOCL. 15 l 38 64 377 0.000 0.000
0.002
127.127.20.0 .GPS. 14 l - 16 0 0.000 0.000
0.002
127.127.22.0 .PPS. 0 l - 16 0 0.000 0.000
0.002
+194.109.22.18 193.67.79.202 2 u 19 64 377 8.155 -85.073
4.854
194.109.20.18 193.79.237.14 2 u 50 64 377 8.260 -84.352
3.458
+193.67.79.202 .PPS. 1 u 26 64 377 11.151 -84.027
7.609
*193.79.237.14 .PPS. 1 u 43 64 377 9.203 -84.055
4.289
+80.126.110.251 .DCFa. 1 u 56 64 377 25.081 -82.351
7.702
+134.221.205.12 .PPS. 1 u 37 64 377 11.331 -84.440
3.881
[root at epia]# cat /sys/devices/virtual/pps/pps0/{assert,clear}
1238081469.149995461#11832
1238081468.349993811#11832
[root at epia]# cat /sys/devices/virtual/pps/pps0/{assert,clear}
1238081469.149995461#11832
1238081469.349995738#11833
[root at epia]# cat /sys/devices/virtual/pps/pps0/{assert,clear}
1238081470.149998987#11833
1238081470.350000044#11834
[root at epia]# ls -l /dev/*ps*
lrwxrwxrwx 1 root root 5 2009-02-06 17:25 /dev/gps0 -> ttyS0
lrwxrwxrwx 1 root root 4 2009-03-26 13:13 /dev/gpspps0 -> pps0
crw-rw---- 1 root tty 254, 0 2009-03-26 13:13 /dev/pps0
[root at epia]#
So yes, we have pps on the serial port.
Yes we have the pps device.
And I did restart ntpd.
So...?
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