[mat-wg] Trimble GPS from old TTM

Hi,

I'd recommend you recompile the stock kernel to add options PPS_SYNC,
and then you can enable fudge 'flag3 1' to tell the driver to enable
kernel PPS time syncing.

Regards
Colin

On 13/05/14 09:48, George Michaelson wrote:
> We just upgraded BSD to 10 and it seems to be fne, but I haven't completed
> the cutover. Certainly, the driver ID for the 127.x.x.x instance is still
> in the BSD port codebase.
> 
> -G
> 
> 
> On Tue, May 13, 2014 at 9:39 AM, Romeo Zwart <romeo.zwart at ripe.net> wrote:
> 
>> Hi Antonio,
>>
>> On 14/05/13 00:44 , Antonio M. Moreiras wrote:
>>> Hello, we are trying to reuse the trimble GPS from our old TTM server in
>>> a Linux NTP machine, and it is not working.
>>
>> We have been doing some testing in the RIPE NCC with some linux
>> flavours. A RIPE Labs article with details is in preparation and will be
>> shared with this list soon.
>>
>> We will contact you off line to share our experience.
>>
>> Regards,
>> Romeo
>>
>>> We can read some trash with a "cat /dev/ttyS0" (what means that the GPS
>>> is sending information), and we can use PPS driver (127.127.22.0) to
>>> read correctly the PPS signal. But the driver from RIPE (127.127.43.0)
>>> doesn't work.
>>>
>>> We compiled the ntpd (version 4.2.6p5) with the following options:
>>>
>>> ./configure --with-openssl-libdir=/usr/lib/x86_64-linux-gnu
>>> --with-openssl-incdir=/usr/include --enable-RIPENCC
>>>
>>> Our Linux is:
>>>
>>> # uname -a
>>> Linux monitor 3.11.0-20-generic #35~precise1-Ubuntu SMP Fri May 2
>>> 21:32:55 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
>>>
>>> # lsb_release -a
>>> No LSB modules are available.
>>> Distributor ID:    Ubuntu
>>> Description:    Ubuntu 12.04.4 LTS
>>> Release:    12.04
>>> Codename:    precise
>>>
>>> Only after follow the recommendations at
>>> http://linuxpps.org/wiki/index.php/LinuxPPS_NTPD_support, the driver
>>> 127.127.43.0 is loaded by NTP, and appears in the list of peers, but no
>>> sync, just zeros.
>>>
>>> Does anyone in this list have any tips?
>>>
>>> Regards,
>>> Moreiras.
>>
>>>
>>>
>>
>>
>>
> 


-- 
Colin Petrie
Systems Engineer
RIPE NCC