framerackm.nc

传感器网络中的嵌入式操作系统源代码

// $Id: FramerAckM.nc,v 1.1.2.4 2003/08/26 09:08:16 cssharp Exp $

/* -*- Mode: C; c-basic-indent: 2; indent-tabs-mode: nil -*- */ 
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 *  Intel Open Source License 
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 * Author: Phil Buonadonna
 * Revision: $Revision: 1.1.2.4 $
 * 
 */

/* FramerAckM
 *
 * This module provides a generic acknowledgement handler for framed
 * token packets from FramerM.
 */

/**
 * @author Phil Buonadonna
 */


includes AM;

module FramerAckM {

  provides {
    interface ReceiveMsg as ReceiveCombined;
  }

  uses {
    interface TokenReceiveMsg;
    interface ReceiveMsg;
  }

}

implementation {

  uint8_t gTokenBuf;

  task void SendAckTask() {
    
    call TokenReceiveMsg.ReflectToken(gTokenBuf);
  }

  event TOS_MsgPtr TokenReceiveMsg.receive(TOS_MsgPtr Msg, uint8_t token) {
    TOS_MsgPtr pBuf;
    
    gTokenBuf = token;
    
    post SendAckTask();
    
    pBuf = signal ReceiveCombined.receive(Msg);
    
    return pBuf;
  }
  
  event TOS_MsgPtr ReceiveMsg.receive(TOS_MsgPtr Msg) {
    TOS_MsgPtr pBuf;
    
    pBuf = signal ReceiveCombined.receive(Msg);
    
    return pBuf;

  }
  
}