There are two interesting corner cases that should get documented someplace.
Reading the RTC only gives you an answer to the second. You can actually get a lot better than that if you spin and wait for it to tick. (I carefully avoided using whatever word I should have used.) Do you know about hanging bridges? http://www.leapsecond.com/pages/m12/sawtooth.htm That problem shows up if you try to get a PPS pulse in via USB. The USB clock is coarse enough to make things interesting. -- These are my opinions. I hate spam. _______________________________________________ devel mailing list devel@ntpsec.org http://lists.ntpsec.org/mailman/listinfo/devel
