atm128timerinitc.nc

来自「tinyos-2.x.rar」· NC 代码 · 共 54 行

/// $Id: Atm128TimerInitC.nc,v 1.5 2008/06/26 04:39:06 regehr Exp $

/*
 * Copyright (c) 2004-2005 Crossbow Technology, Inc.  All rights reserved.
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose, without fee, and without written agreement is
 * hereby granted, provided that the above copyright notice, the following
 * two paragraphs and the author appear in all copies of this software.
 * 
 * IN NO EVENT SHALL CROSSBOW TECHNOLOGY OR ANY OF ITS LICENSORS BE LIABLE TO 
 * ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL 
 * DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
 * IF CROSSBOW OR ITS LICENSOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 
 * DAMAGE. 
 *
 * CROSSBOW TECHNOLOGY AND ITS LICENSORS SPECIFICALLY DISCLAIM ALL WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 
 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 
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 */

/**
 * Initialise an Atmega128 timer to a particular prescaler. Expected to be
 * used at boot time.
 * @param timer_size Integer type of the timer
 * @param prescaler Desired prescaler value
 *
 * @author Martin Turon <[e-mail]>
 * @author David Gay <[e-mail]>
 */

generic module Atm128TimerInitC(typedef timer_size @integer(), uint8_t prescaler) @safe()
{
  provides interface Init @atleastonce();
  uses interface HplAtm128Timer<timer_size> as Timer;
}
implementation
{
  command error_t Init.init() {
    atomic {
      call Timer.set(0);
      call Timer.start();
      call Timer.setScale(prescaler);
    }
    return SUCCESS;
  }

  async event void Timer.overflow() {
  }
}