[ntp:questions] Configuring FreeBSD 6.2 for use with Garmin GPS 18 LVC

Dennis Hilberg, Jr. timekeeper at dennishilberg.com.invalid
Fri Dec 14 19:12:00 UTC 2007


Hello,

As the subject line suggests, I would like to set up FreeBSD 6.2 to use my 
Garmin GPS 18 LVC as a refclock.

I've been following advice from David Taylor's web page on this subject 
http://www.david-taylor.myby.co.uk/ntp/FreeBSD-GPS-PPS.htm , although he 
used FreeBSD 5.4.

I have a few questions regarding the configuration.  I understand that 
'options PPS_SYNC' needs to be added to the kernel config file, and that the 
kernel then needs to be recompiled.  However, he includes a comment from 
Harlan Stenn stating that 'include GENERIC', 'ident PPS-GENERIC', and 
'options PPS_SYNC' need to be added to the file /usr/src/sys/i386/conf/PPS . 
  This file doesn't exist on my system.  Do I need to create the file from 
scratch with those items in it, or is it something that is created after the 
kernel recompile?

I emailed David Taylor with these questions regarding the configuration, and 
he replied that he can't quite remember exactly how he configured his 
system, and if that PPS file needed to be created from scratch or not.  So 
he directed me to the newsgroup.

If someone could give me a complete list of steps that need to be taken to 
configure FreeBSD to use the GPS 18 LVC, or point me to some documentation 
on the matter, I would greatly appreciate it.  I'm new to FreeBSD and don't 
know my way around.

Thanks!

-- 
Dennis Hilberg, Jr.      timekeeper(at)dennishilberg(dot)com
NTP Server Information:  http://saturn.dennishilberg.com/ntp.php




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