[time-nuts] Thunderbolt gpsd > ntpd failure.

[Ralph Smith]

I got this working, and the FreeBSD port with the Thunderbolt diffs is  
at < http://ralphsmith.org/~ralph/soekris-ntp/gpsd.tar.gz>.  I also  
used the ntp-devel port.

Ralph

On May 1, 2009, at 12:01 AM, John Murphy wrote:

> Thanks for all the replies.
>
> Hal Murray wrote:
>
>> The configure step takes parameters.  You need to do something like:
>>
>> ./configure --enable-SHM
>
> That could well be the problem. I'm using the stock ntpd which came
> with the FreeBSD release, so it may not have the SHM driver.
>
> Scott Mace wrote:
>
>> Here is what I did to get it to work:
>>
>> http://www.febo.com/pipermail/time-nuts/2008-August/032726.html
>> http://www.febo.com/pipermail/time-nuts/2008-August/033106.html
>> http://www.febo.com/pipermail/time-nuts/2008-August/032803.html
>
> I think I had read those, but I figured most of it had been
> committed and just made the change in tsip.c which is now:
>
>      gpsd_set_speed(session, session->gpsdata.baudrate, 'N', 1);
>
> gpsd is V 2.38 which was the latest in the fbsd ports tree and
> that line was #80 so I'll need to work out where the other changes
> go if they haven't been committed.
>
>> You need to make sure your kernel has the sysvshm option:
>> options         SYSVSHM                 # SYSV-style shared memory
>
> Yes it has that line in the kernel I built.
>
>> I have a couple of thunderbolts working with net4501s using the  
>> TMR1IN
>> mod:  http://www.febo.com/pages/soekris/
>
> That's exactly the page I've used and it's all working very nicely.
>
>> I used a TAPR fatpps to stretch the pulse so the net4501 would be  
>> happy.
>
> Me too, with the addition of 51 ohms across the input. I'm not
> running the serial data through the fat-pps though. It seems
> better that way.
>
> Thanks for the new diff. I'll see if I can work out how to apply
> the changes to 2.38 at the week end, but I also plan to fix the
> GPS antenna to the roof this week end. Too much time in holdover
> where it is currently.
>
> Thanks again.
>
> -- 
> John.
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.