timeset.nc

传感器网络中的嵌入式操作系统源代码

// $Id: TimeSet.nc,v 1.4.4.4 2003/08/26 09:08:13 cssharp Exp $

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

/**
 * The TimeSet interface. 
 * @author Su Ping <[e-mail]>
 */

includes TosTime;
interface TimeSet {

  /**
   *  Set the 64 bits logical time to a specified value 
   *  @param t Time in the unit of binary milliseconds
   *           type is tos_time_t
   *  @return none
   */
  command void set(tos_time_t t);


  /**
   *  Adjust logical time by n  binary milliseconds.
   *
   *  @param us unsigned 16 bit interger 
   *            positive number advances the logical time 
   *            negtive argument regress the time 
   *            This operation will not take effect immidiately
   *            The adjustment is done duing next clock.fire event
   *            handling.
   *  @return none
   */
  command void adjust(int16_t n);

  /**
   *  Adjust logical time by x milliseconds.
   *
   *  @param x  32 bit interger
   *            positive number advances the logical time
   *            negtive argument regress the time
   *  @return none
   */
  command void adjustNow(int32_t x);
   
}