blinkm.nc

tinyos中blink的源代码

// $Id: BlinkM.nc,v 1.5 2003/10/07 21:44:45 idgay Exp $

/*									tab:4
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 * All rights reserved.
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 * two paragraphs and the author appear in all copies of this software.
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 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA 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 THE UNIVERSITY OF
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 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS."
 *
 * Copyright (c) 2002-2003 Intel Corporation
 * All rights reserved.
 *
 * This file is distributed under the terms in the attached INTEL-LICENSE     
 * file. If you do not find these files, copies can be found by writing to
 * Intel Research Berkeley, 2150 Shattuck Avenue, Suite 1300, Berkeley, CA, 
 * 94704.  Attention:  Intel License Inquiry.
 */

/**
 * Implementation for Blink application.  Toggle the red LED when a
 * Timer fires.
 **/
module BlinkM {
  provides {
    interface StdControl;
  }
  uses {
    interface Timer;
    interface Leds;
  }
}
implementation {

  /**
   * Initialize the component.
   * 
   * @return Always returns <code>SUCCESS</code>
   **/
  command result_t StdControl.init() {
    call Leds.init(); 
    return SUCCESS;
  }


  /**
   * Start things up.  This just sets the rate for the clock component.
   * 
   * @return Always returns <code>SUCCESS</code>
   **/
  command result_t StdControl.start() {
    // Start a repeating timer that fires every 1000ms
    return call Timer.start(TIMER_REPEAT, 1000);
  }

  /**
   * Halt execution of the application.
   * This just disables the clock component.
   * 
   * @return Always returns <code>SUCCESS</code>
   **/
  command result_t StdControl.stop() {
    return call Timer.stop();
  }


  /**
   * Toggle the red LED in response to the <code>Timer.fired</code> event.  
   *
   * @return Always returns <code>SUCCESS</code>
   **/
  event result_t Timer.fired()
  {
    call Leds.redToggle();
    return SUCCESS;
  }
}