[Tinyos-host-mote-wg] Re: [Tinyos-2.0wg] Timer.fired

[Philip Levis]

On May 23, 2005, at 11:30 AM, Cory Sharp wrote:

>
> There's no count.  I'll give a brief overview.  The timer system
> executes timers in a task, which takes one pass over the timers,
> signalling any that have fired and calculating the next soonest event.
>  Each time a periodic timer fires, it prepares itself for its next
> incremental event.  That could be in the past if the system can't keep
> up.  After processing all of the timers, if the next soonest event is
> in the past or has lapsed into the past, the execute task is
> immediately posted again.  Otherwise, an alarm is set.
>

Ah, OK. I think I understand. Your description is a little unclear.  
If I have it wrong, let me know and I'll just look at the code. The  
state it keeps is "last time I fired." From this it can determine how  
many firings remain, up to time wraparound, etc.?

Phil


-------

"We shall not cease from exploration
And the end of all our exploring
Will be to arrive where we started
And know the place for the first time."

- T. S. Eliot,  'Little Gidding'

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