rssibasec.nc

tinyos2.0版本驱动

/*
 * Copyright (c) 2008 Dimas Abreu Dutra
 * All rights reserved
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the
 *   distribution.
 * - Neither the name of the Stanford University nor the names of
 *   its contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL DIMAS ABREU
 * DUTRA OR HIS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/**
 * @author Dimas Abreu Dutra
 */

#include "ApplicationDefinitions.h"
#include "RssiDemoMessages.h"  

module RssiBaseC {
  uses interface Intercept as RssiMsgIntercept;

#ifdef __CC2420_H__
  uses interface CC2420Packet;
#endif //__CC2420_H__  
} implementation {

  uint16_t getRssi(message_t *msg);
  
  event bool RssiMsgIntercept.forward(message_t *msg,
				      void *payload,
				      uint8_t len) {
    RssiMsg *rssiMsg = (RssiMsg*) payload;
    rssiMsg->rssi = getRssi(msg);
    
    return TRUE;
  }

#ifdef __CC2420_H__  
  uint16_t getRssi(message_t *msg){
    return (uint16_t) call CC2420Packet.getRssi(msg);
  }
#elif defined(CC1K_RADIO_MSG_H)
    uint16_t getRssi(message_t *msg){
    cc1000_metadata_t *md =(cc1000_metadata_t*) msg->metadata;
    return md->strength_or_preamble;
  }
#else
  #error Radio chip not supported! This demo currently works only \
         for motes with CC1000 or CC2420 radios.  
#endif //__CC2420_H__
  
}