Freebsd 6.2 PPS (pps.ko) and NTP
Aaron D. Gifford
agifford at infowest.com
Fri Feb 23 19:35:49 UTC 2007
I've got a Garmin GPS 18 LVD attached to a serial port on a FreeBSD 6.2
box. I've been trying to enable PPS support for ntpd on the BSD box,
but this is all I get as a result:
20 Feb 10:41:46 ntpd: refclock_nmea: time_pps_kcbind failed:
Operation not supported
I do have pps.ko and ppbus.ko kernel modules loaded according to kldstat.
My ntpd.conf looks like:
# Garmin GPS 18 LVD (OEM) reference clock:
server 127.127.20.0 mode 1 minpoll 4
fudge 127.127.20.0 time1 0.000 flag2 0 flag3 1 refid PPS
The GPS 18 is configured to enable PPS (set to a 200ms pulse width) and
it's wired to DCD on the serial port.
Any ideas? I'm an NTP GPS refclock newbie...
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