clnn_listen_marzullo.java

主要用于无线传感网络的编写的书籍.对于初学者有着很大的用处

// $Id: Listen.java,v 1.5 2004/08/19 00:13:49 idgay Exp $

/*									tab:4
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 * 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.
 */


package net.tinyos.tools;

import java.io.*;
import net.tinyos.packet.*;
import net.tinyos.util.*;
import net.tinyos.message.*;

public class CLNN_Listen_Marzullo {
    public static void main(String args[]) throws IOException {
	if (args.length > 0) {
	    System.err.println("usage: java net.tinyos.tools.Listen");
	    System.exit(2);
	}
	
	PacketSource reader = BuildSource.makePacketSource();
	if (reader == null) {
	    System.err.println("Invalid packet source (check your MOTECOM environment variable)");
	    System.exit(2);
	}

	try {
	  reader.open(PrintStreamMessenger.err);
	  for (;;) {
	    byte[] packet = reader.readPacket();
	    anycast_info(packet);
	    //Dump.printPacket(System.out, packet);
	    //System.out.println();
	    //System.out.flush();
	  }
	}
	catch (IOException e) {
	    System.err.println("Error on " + reader.getName() + ": " + e);
	}
    }

    public static String addzero(String in) {
	while(in.length() != 2)
	    in = "0" + in;
	return in;
    }

    public static void anycast_info(byte[] packet) {

	String data[] = new String[9];
	String out = "";
	String out1 = "";
	data[0] = "Source";
	data[1] = "Training";
	data[2] = "Min";
	data[3] = "Max";
	data[4] = "Fault";
	data[5] = "Percent";
	data[6] = "Mean";
	data[7] = "Limit";
	data[8] = "Trust";

	if(packet.length != 34) {
	    System.out.println("Unknown packet received");
	    return;
	}   

	int i=6;
	System.out.println("----------");
	for(int j=0; j<9; j++) {
	    String tmp1 = addzero(Integer.toHexString(packet[i+1] & 0xff).toUpperCase())+""+
		addzero(Integer.toHexString(packet[i] & 0xff).toUpperCase());

	    int tmp = Integer.parseInt(tmp1,16);
	    i+=2;
	    if(j != 8 && j != 5)
		out += data[j] + ": " + tmp + "\n";
	    if(j == 0 || j == 4)
		out1 += data[j] + ": " + tmp + "\n";

	    if(j==8 && tmp==2)
		out = out1;
	}
	System.out.print(out);
    }
}