On Sun, Jan 16, 2011 at 11:58:23AM +1100, Michael Ashley wrote: > Hi folks, > > Sorry if I'm missing something obvious, but is it possible for chronyd > to synchronize with gpsd without LinuxPPS support?
Yes, it should work. > My kernel (Debian squeeze 2.6.32-5-686) doesn't appear to have > PPS. I'm using a version of gpsd pulled with git just now, and gpsd > 2.95. > > I naively tried adding > > refclock SHM 1 poll 3 refid GPS1 > > to my /etc/chrony.conf file, but it doesn't pick up anything from > the GPS (which is working, confirmed by listening in to the gpsd > socket). > > GPS1 appears in "sources" as: > > MS Name/IP address Stratum Poll LastRx Last sample > ============================================================================ > #+ GPS1 0 3 10y +0ns[ +0ns] +/- 0ns Do you get anything when the segment 0 (message decoded timestamps) is used instead? That would mean the communication between gpsd and chrony is working, but gpsd doesn't provide the PPS timestamps. What is the output from gpsd -n -N -D 6 /dev/ttyS0 | grep -i 'pps\|ntp' ? -- Miroslav Lichvar --- To unsubscribe email [email protected] with "unsubscribe" in the subject. For help email [email protected] with "help" in the subject. Trouble? Email [email protected].
