cc2420packetc.nc

Develop Zigbee network real-time Os

/*
 * Copyright (c) 2005-2006 Arch Rock Corporation
 * All rights reserved.
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 *   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
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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/**
 * @author Jonathan Hui <[e-mail]>
 * @version $Revision: 1.5 $ $Date: 2007/01/16 16:16:51 $
 */

#include "IEEE802154.h"

module CC2420PacketC {

  provides interface CC2420Packet;
  provides interface PacketAcknowledgements as Acks;

}

implementation {

  cc2420_header_t* getHeader( message_t* msg ) {
    return (cc2420_header_t*)( msg->data - sizeof( cc2420_header_t ) );
  }

  cc2420_metadata_t* getMetadata( message_t* msg ) {
    return (cc2420_metadata_t*)msg->metadata;
  }

  async command error_t Acks.requestAck( message_t* p_msg ) {
    getHeader( p_msg )->fcf |= 1 << IEEE154_FCF_ACK_REQ;
    return SUCCESS;
  }

  async command error_t Acks.noAck( message_t* p_msg ) {
    getHeader( p_msg )->fcf &= ~(1 << IEEE154_FCF_ACK_REQ);
    return SUCCESS;
  }

  async command bool Acks.wasAcked( message_t* p_msg ) {
    return getMetadata( p_msg )->ack;
  }

  async command void CC2420Packet.setPower( message_t* p_msg, uint8_t power ) {
    if ( power > 31 )
      power = 31;
    getMetadata( p_msg )->tx_power = power;
  }

  async command uint8_t CC2420Packet.getPower( message_t* p_msg ) {
    return getMetadata( p_msg )->tx_power;
  }
   
  async command int8_t CC2420Packet.getRssi( message_t* p_msg ) {
    return getMetadata( p_msg )->rssi;
  }

  async command error_t CC2420Packet.getLqi( message_t* p_msg ) {
    return getMetadata( p_msg )->lqi;
  }

}