[LinuxPPS] Problems with ppstest and NTP

[Heiko Gerstung]

Paul,

thanks for your comments. The clear/assert events are working fine and I 
would have no problem letting ppstest go, but my problem is that NTP 
cannot use the pps source as well despite the fact that Rodolfo states 
that at least the Atom driver of NTP should work without any modification.

Best Regards,
Heiko


Paul schrieb:
> If the clear/asserts change in /sys/class/pps/pps0/assert
> or /sys/class/pps/pps0/clear all is well. I think the debugging output
> is more a developer tool.
>
> Paul
>
> On Wed, 2008-01-09 at 12:08 +0100, Heiko Gerstung wrote:
>   
>> Hi there!
>>
>> I just managed to get LinuxPPS (ntp-pps-2.6.23-quater.diff) to run on 
>> one of our embedded systems (kernel 2.6.23.12, i386 arch). I tried to 
>> follow the instructions on
>> http://wiki.enneenne.com/index.php/LinuxPPS_support
>>
>> but I have a few problems/comments:
>>
>> - when I try to fire up ppstest, I get:
>> /ppstest /dev/pps0
>> trying PPS source "/dev/pps0"
>> cannot create a PPS source from device "/dev/pps0" (Operation not supported)
>>
>> My pps0 device looks OK to me:
>>  ls -l /dev/pps0
>> crwxrwxrwx    1 root     root     253,   0 Jan  9 10:48 /dev/pps0
>>
>>
>> And the debugging output looks fine, too:
>> PPS event on source 0 at 1199876811.203122984
>> capture clear seq #1260 for source 0
>>
>> It seems that ntpd has the same problems here:
>> Jan  9 10:46:07 xxx daemon.err ntpd[5675]: refclock_atom: 
>> time_pps_create failed: Invalid argument
>> Jan  9 10:49:50 xxx daemon.notice ntpd[6239]: PARSE receiver #0: 
>> parse_start: could not set up PPS: Invalid argument
>>
>>
>> Any hint what I could check?
>>
>> Thanks in advance,
>>  Heiko
>>
>>
>> _______________________________________________
>> LinuxPPS mailing list
>> LinuxPPS at ml.enneenne.com
>> http://ml.enneenne.com/cgi-bin/mailman/listinfo/linuxpps
>> Wiki: http://wiki.enneenne.com/index.php/LinuxPPS_support
>>
>>     
>
>
> _______________________________________________
> LinuxPPS mailing list
> LinuxPPS at ml.enneenne.com
> http://ml.enneenne.com/cgi-bin/mailman/listinfo/linuxpps
> Wiki: http://wiki.enneenne.com/index.php/LinuxPPS_support
>