[LinuxPPS] : Re: [Bug 610] Generic NMEA GPS Receiver driver w/PPS expects PPS after NMEA data (Udo van den Heuvel)

Rodolfo Giometti giometti at enneenne.com
Tue Oct 30 10:43:21 CET 2007


On Tue, Oct 30, 2007 at 07:45:18PM +1100, Cirilo Bernardo wrote:
>    >> SUBSYSTEM="linuxpps", OWNER="root", GROUP="tty", MODE="0660",
>    >> SYMLINK+="gpspps%d", OPTIONS+="last_rule"
> 
>    > Does this make a device or a link?
>    > We need a *link* to /dev/pps0
> 
>    OK, if the subsystem is 'pps' then change 'linuxpps' to 'pps'.
> 
>    Yes, the 'SYMLINK+=' part means "add a symlink for this device";
>    the device will be created as normal and a symlink is added, so
>    if LinuxPPS creates "pps0", then pps0 will exist as well as a
>    link "gpspps0". However, I don't know if this is actually
>    compliant with the request of the NTP guys. I had the impression
>    they really don't want a /dev/pps? unless it is an ATOM refclock.
>    Remember that LinuxPPS is specific to Linux, and if any patches
>    submitted to NTP have a bad effect on any of the other systems,
>    they will simply refuse the patch.

No problems for that since Linux doesn't force the user to use a
specific name for its devices.

>    If I had wanted to change the name of the device, I would have
>    used the NAME= parameter - don't you love udev - it's so simple
>    and flexible.

I agree. :)

Thanks,

Rodolfo

-- 

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