absolutetimer.nc

nesC写的heed算法

// $Id: AbsoluteTimer.nc,v 1.5.4.4 2003/08/26 09:08:12 cssharp Exp $

/*									tab:4
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/*
 * Authors:		Su Ping  <[e-mail]>
 *
 */



/**
 * The AbsoluteTimer interface. 
 * @author Su Ping <[e-mail]>
 **/
includes TosTime;
interface AbsoluteTimer {
  /**
   *  start a AbsoluteTimer and set its expire time to t 
   *  If the AbsoluteTimer is started of, return SUCCESS
   *  Else, return FAIL
   **/
  command result_t set(tos_time_t t );
  /**
   *  Cancel an absolute timer. 
   *  If the timer does not exist, 
   *  return FALSE.
   **/
  command result_t cancel();

  /**
   *  The AbsoluteTimer exipired event that a timer user needs to handle 
   **/
  event   result_t fired();
}