[LinuxPPS] getting the PPS source

[Ben DuPont]

Udo van den Heuvel wrote:
> On 2010-03-22 13:03, Ben DuPont wrote:
>   
>> Do I need a pps patch for the newer versions?  If yes, where are they
>> located?
>>     
>
> For PPS-only: no
> For the NMEA ref-clock we still need pacthes AFAIK but a bug is open at
> http://psp2.ntp.org/bugs/show_bug.cgi?id=610
>
> So maybe check progress there and see if the patch is already in the
> code tree.
>
> Udo
>
>   
I'd like both PPS and the NMEA ref-clock.  Bug 610 that you reference above
was fixed in NTP version 4.2.5p237-RC.  I'm now running version 4.2.7p20
and it still does not seem to be working.

I think I have only the PPS line configured in NTP.  How do I get the
NMEA ref-clock as well?  Here's my ntp.conf:

server 127.127.20.0 prefer minpoll 4
fudge 127.127.20.0 flag1 1 flag3 1 flag2 0 time1 0.0

And here's example output from ntpq -p
cs438 at cs438-desktop:~/download/cs438/ntpd/ntp-dev-4.2.7p20$ ntpq -p

     remote           refid      st t when poll reach   delay   offset  
jitter
==============================================================================
*GPS_NMEA(0)     .GPS.            0 l   13   16  377    0.000  112397.  
65.131


Ben