I'm trying to use ntpd for accurate time sync with a ublox gps module using this tutorial on Ubuntu 16.04.
However, I'm stuck setting up ntpd to listen to the shm driver. In the /var/log/ntp.log, I get the following error:
05-18T10:58:56 ntpd[6687]: newpeer: addr:127.127.28.0, name:(null), cast_flags:1, flags:1 05-18T10:58:56 ntpd[6687]: ntpd was compiled without refclock support. 05-18T10:58:56 ntpd[6687]: 127.127.28.0 local addr 127.0.0.1 -> <null> 05-18T10:58:56 ntpd[6687]: newpeer: addr:127.127.28.1, name:(null), cast_flags:1, flags:21 05-18T10:58:56 ntpd[6687]: ntpd was compiled without refclock support. 05-18T10:58:56 ntpd[6687]: 127.127.28.1 local addr 127.0.0.1 -> <null> 05-18T10:58:56 ntpd[6687]: Fudge commands not supported: built without refclocks I am using the NTPsec fork of NTP with the following ntp.conf file:
pool pool.ntp.org iburst driftfile /var/lib/ntp/ntp.drift logfile /var/log/ntp.log restrict default kod nomodify notrap nopeer noquery restrict -6 default kod nomodify notrap nopeer noquery restrict 127.0.0.1 mask 255.255.255.0 restrict -6 ::1 # GPS Serial data reference (NTP0) server 127.127.28.0 fudge 127.127.28.0 refid GPS # GPS PPS reference (NTP1) server 127.127.28.1 prefer fudge 127.127.28.1 refid PPS It seems like I built NTP without refclock support. However, I don't find information how to include this.
All help is much appreciated!
2 Reset to default
