On Wed, Apr 05, 2006 at 10:10:39PM -0500, Philip M. White has written: > For Garmin GPS 18 LVC, with its PPS signal, do I need any patches for > Linux 2.6.x? > > I see that Linux 2.0, 2.2, and 2.4 require the "PPSKit", but that's not > available for Linux 2.6. Is that because it became integrated into the > kernel, or Linux 2.6 is not designed for such operations? Or is there > another patch?
I too run linux kernel 2.6, but without the PPSkit patches. Instead I run a version of David J Schwartz's shm pps driver with a fixed 16 s. poll interval. I got this initially from Steven Bjork's site: http://www.wraith.sf.ca.us/ntp/ which is a most interesting article. My version is modified in various ways, but significantly to collect 14 timestamps, filter out outliers, then take the mean of the remainder of the offsets. It works well for me. Tell me off list if you want it. Richard Leach _______________________________________________ timekeepers mailing list [email protected] https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
