Hi,
I am porting RIOT to a new platform and I have been having lots of
problems with getting the timers working. I have gone through all the
timer code and I think I understand how RIOT uses timers and found a few
problems/limitations.
*Limitations*
Am I correct in thinking:
- RIOT only supports 32 bit timers?
- RIOT uses multiple timers but they all must run at the same speed and
be synchronised. So effectively there must be only one timer but
multiple channels/compares.
*Problems*
1) If I set a hwtimer for longer than the maximum period of the timer it
will interrupt too soon.
e.g.
Timer overflows every 1000s.
If I set a hwtimer to delay for 1001s it will interrupt in 1s time.
2) vtimers fail if the maximum timer period is less than 4096s
(SECONDS_PER_TICK).
3) Currently vtimers do not check if they request a hwtimer and there is
not one available.
Regards
Simon
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