Dennis Golden wrote:
On Wed, 08 Jan 2014 17:46:26 +0000, David Taylor wrote:
On 07/01/2014 16:55, Dennis Golden wrote:
I have searched to find an answer to this problem with no success. I am
using the oncore clock (127.127.30.0) and have included "enable pps" in
ntp.conf, but I get the following in /var/log messages:
line 59 column 8 syntax error, unexpected T_String
syntax error in /etc/ntp.conf line 59, column 8
I can use ntpdc to set this option with no problem.
Any ideas?
TIA,
Dennis
Likely it's not related, but I was just playing with a new system
(Raspberry Pi) and I had told NTP that a leap file was present, when I
hadn't yet created it. This is copying the ntp.conf from one system to
another. NTP worked, except the PPS didn't work when the system booted.
Restart NTP and the PPS worked perfectly. I didn't put two and two
together until I added the leap-second file, and NTP started correctly
at boot time. The reference was right at the end of ntp.conf
So this suggests that NTP can parse so far down ntp.conf and get those
things working, but when it finds an error, it stops other things
working. So maybe your error was causing a similar effect. This with
ntp 4.2.7p410 on Raspberry Pi with a derivative of Debian Wheezy, I believe.
Thanks to all for your responses. I still don't understand why enable pps using
ntpdc appears to work and shows up in the logs, but I'm not sure it does
anything
from looking at the source (ntp-4.2.6p5). Since consensus says that it's not
supported, I'm not going to worry about it. Correlating the information from
other
servers, it appears that pps is working.
On NetBSD-6 my "Sure" evaluation board and ntp-dev-4.2.7p401
using atom with nmea drivers -
$ ntpq -p
remote refid st t poll reach offset jitter
-GPS-NMEA(2) .GPSb. 7 l 64 377 -6.821 8.756
oPPS(2) .PPSb. 0 l 16 377 -0.001 0.004
.....
$ ntpq -c rv
....., sync_pps, .....
$ ntptime
.....
offset -0.893 us, .....
maximum error 402500 us, estimated error 1 us,
status 0x2107 (PLL,PPSFREQ,PPSTIME,PPSSIGNAL,NANO),
.....
So it is clear enough for me that PPS is working.
David
Regards,
Dennis
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