testlocaltimec.nc

tinyos2.0版本驱动

// $Id: TestLocalTimeC.nc,v 1.2 2007/09/13 23:10:20 scipio Exp $

/*									tab:4
 * "Copyright (c) 2000-2005 The Regents of the University  of California.  
 * 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 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
 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
 * 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.
 */

/**
 * TestLocalTime is a simple application that tests the LocalTimeMilliC
 * componentby sending the current time over the serial port once per
 * second.
 *
 *  @author David Gay
 *  @author Gilman Tolle
 *  @author Philip Levis
 *  
 *  @date   May 24 2007
 *
 **/

#include "Timer.h"
#include "TestLocalTime.h"

module TestLocalTimeC {
  uses {
    interface SplitControl as Control;
    interface Leds;
    interface Boot;
    interface AMSend;
    interface Timer<TMilli> as MilliTimer;
    interface LocalTime<TMilli>;
  }
}
implementation {
  message_t packet;
  bool locked = FALSE;
  
  event void Boot.booted() {
    call Control.start();
  }
  
  event void Control.startDone(error_t err) {
    if (err == SUCCESS)
      call MilliTimer.startPeriodic(1024);
  }

  event void Control.stopDone(error_t err) { }

  event void MilliTimer.fired() {
    if (!locked)
      {
	test_localtime_msg_t* rcm = (test_localtime_msg_t*)call AMSend.getPayload(&packet, sizeof(test_localtime_msg_t));
	if (call AMSend.maxPayloadLength() < sizeof(test_localtime_msg_t))
	  return;

	rcm->time = call LocalTime.get();
	if (call AMSend.send(AM_BROADCAST_ADDR, &packet, sizeof(test_localtime_msg_t)) == SUCCESS)
	  {
	    locked = TRUE;
	    call Leds.led0Toggle();
	  }
    }
  }

  event void AMSend.sendDone(message_t* bufPtr, error_t error) {
    if (&packet == bufPtr)
      locked = FALSE;
  }

}