[riot-notifications] [RIOT] sys/vtimer: Fix two vtimer issues (hwtimer tick conversion). (#2515)

Joakim Gebart notifications at github.com
Mon Jun 1 08:54:07 CEST 2015

I ran this on a test yesterday and also got past the initial problem at one hour. But also got to the same error as @lightblu, there was a lock up at 7696 seconds wall clock time, 7567 hwtimer seconds. I wasn't looking when it happened so it could have been just a problem with the debugger too, I will run another test today and also see if I have the time to refactor the hwtimer driver for Kinetis because I believe the current implementation is losing too many ticks (129 second difference between the wall clock and the timer tick after only 2 hours is not acceptable IMO, almost 1 second per 60 seconds).

This PR fixes a major bug in the vtimer implementation and should be merged independently of the other timer work. The comment by @OlegHahm and me is not crucial, it is better to get this merged and have a working vtimer and do a follow up PR to remove the set_absolute call from vtimer.c.


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