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Timer Task Force
Kaspar Schleiser edited this page Jan 28, 2015
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8 revisions
This page is used to collect requirements and suggestions concerning a hwtimer/vtimer/RTC redesign.
- very efficient timers for use in time-critical drivers
- Wait for a time period
- Await a point in time
- Wait for a (past) time + x
- what granularity to use? msec,usec,nsec, timer ticks, a combination?
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timer.h: timer hardware abstraction, using ticks
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hwtimer: low-level timer multiplexing, one timer.h timer using the same ticks
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vtimer: higher-level timer multiplexing, using one hwtimer, usecs
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first two look OK, are stable
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vtimer sucks