radiocounttoflashc.nc

tinyos-2.x.rar

/*
    * "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.
 */

/**
 * This application tests the coexistence of radio and flash.
 * (based on RadioCountToLeds)
 *
 * @see README.TXT
 * @author Philipp Huppertz
 * @author Philip Levis (RadioCountToLeds)
 * @date   June 6 2005
 */

#include "Timer.h"
#include "RadioCountToFlash.h"
#define LOG_LENGTH 15

module RadioCountToFlashC {
  uses {
    interface Leds;
    interface Boot;
    interface Receive;
    interface AMSend;
    interface Timer<TMilli> as FlashTimer;
    interface Timer<TMilli> as RadioTimer;
    interface SplitControl as AMControl;
    interface Packet;
    interface LogRead;
    interface LogWrite;
    interface GeneralIO as FailureLed;
  }
}
implementation {

  message_t packet;

  bool locked;
  uint16_t sendingCounter = 0;
  uint16_t receiveCounter = 0;
  uint16_t readBuffer = 0;
  uint16_t logCounter = 0;      
 
  void failure() {
    call FailureLed.set();
    for (;;) {
      ;
    }
  } 
  
  task void readingTask() {
    if (call LogRead.read((void*) &readBuffer, sizeof(receiveCounter)) != SUCCESS) {
      post readingTask();
    }
  }
  
  task void writingTask() {
    if (call LogWrite.append((void*)receiveCounter, sizeof(receiveCounter)) != SUCCESS) {
      post writingTask();
    }
  }
  
  event void Boot.booted() {
    call LogWrite.erase();
    call AMControl.start();
  }

  event void AMControl.startDone(error_t err) {
    if (err == SUCCESS) {
      call RadioTimer.startPeriodic(1000);
    }
    else {
      call AMControl.start();
    }
  }

  event void AMControl.stopDone(error_t err) {
    	// do nothing
  }
  
  event void FlashTimer.fired() {
    if (call LogRead.read((void*) &readBuffer, sizeof(receiveCounter)) != SUCCESS) {
      post readingTask();
    }
  }
      
  event void RadioTimer.fired() {
    dbg("RadioCountToLedsC", "RadioCountToLedsC: timer fired, counter is %hu.\n", counter);
    if (locked) {
      return;
    }
    else {
      RadioCountMsg* rcm = (RadioCountMsg*)call Packet.getPayload(&packet, sizeof(rcm));
      if (rcm == NULL || call Packet.maxPayloadLength() < sizeof(RadioCountMsg)) {
        return;
      }
      ++sendingCounter;
      rcm->counter = sendingCounter;	
      if (call AMSend.send(AM_BROADCAST_ADDR, &packet, sizeof(RadioCountMsg)) == SUCCESS) {
        dbg("RadioCountToLedsC", "RadioCountToLedsC: packet sent.\n", counter);	
        locked = TRUE;
      }
    }
  }

  event message_t* Receive.receive(message_t* bufPtr, void* payload, uint8_t len) {
    dbg("RadioCountToLedsC", "Received packet of length %hhu.\n", len);
    if (len != sizeof(RadioCountMsg)) {return bufPtr;}
    else {
      RadioCountMsg* rcm = (RadioCountMsg*)payload;
      receiveCounter = rcm->counter;
      if (call LogWrite.append((void*)&receiveCounter, sizeof(receiveCounter)) != SUCCESS) {
        post writingTask();
      }
    }
    return bufPtr;
  }

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

  event void LogRead.readDone(void* buf, storage_len_t len, error_t error) {
    --logCounter;
    if (error != SUCCESS) {
      failure();
    }
    readBuffer = *(uint16_t*)buf;
    if ( logCounter > 0 ) {
      if (readBuffer & 0x1) {
        call Leds.led0On();
      }
      else {
        call Leds.led0Off();
      }
      if (readBuffer & 0x2) {
        call Leds.led1On();
      }
      else {
        call Leds.led1Off();
      }
      if (readBuffer & 0x4) {
        call Leds.led2On();
      }
      else {
        call Leds.led2Off();
      }
      call FlashTimer.startOneShot(100);
    } 
  }  
      
  event void LogRead.seekDone(error_t error) {
    if (error != SUCCESS) {
      failure();
    }
  }
  
  event void LogWrite.appendDone(void* buf, storage_len_t len, bool recordsLost, error_t error) {
    ++logCounter;
    if (error != SUCCESS) {
      failure();
    }
    if (logCounter > LOG_LENGTH) {
      if (call LogWrite.sync() != SUCCESS) {
        failure();
      } 
    } 
  }

  event void LogWrite.syncDone(error_t error) {
    if (error != SUCCESS) {
      failure();
    }
    call FlashTimer.startOneShot(100);
  }
      
  event void LogWrite.eraseDone(error_t error) {
    if (error != SUCCESS) {
      failure();
    }
  }
      
}