// $Id: Sender.java,v 1.4 2006/12/12 18:22:59 vlahan Exp $ /* tab:4 * "Copyright (c) 2000-2003 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. */ /* Authors: David Gay * Intel Research Berkeley Lab * */ /** * @author David Gay * @author Intel Research Berkeley Lab */ package net.tinyos.message; import net.tinyos.util.*; import net.tinyos.packet.*; import java.io.*; /** * Sender class (send tinyos messages). * * A sender class provides a simple interface built on Message for * sending tinyos messages to a SerialForwarder * * @version 2, 24 Jul 2003 * @author David Gay */ public class Sender { // If true, dump packet contents that are sent private static final boolean VERBOSE = false; PhoenixSource sender; /** * Create a sender talking to PhoenixSource forwarder. The group id of * sent packets is not set. * @param forwarder PhoenixSource with which we wish to send packets */ public Sender(PhoenixSource forwarder) { sender = forwarder; } /** * Send m to moteId via this Sender's SerialForwarder * @param moteId message destination * @param m message * @exception IOException thrown if message could not be sent */ synchronized public void send(int moteId, Message m) throws IOException { int amType = m.amType(); byte[] data = m.dataGet(); if (amType < 0) { throw new IOException("unknown AM type for message " + m.getClass().getName()); } SerialPacket packet = new SerialPacket(SerialPacket.offset_data(0) + data.length); packet.set_header_dest(moteId); packet.set_header_type((short)amType); packet.set_header_length((short)data.length); packet.dataSet(data, 0, packet.offset_data(0), data.length); byte[] packetData = packet.dataGet(); byte[] fullPacket = new byte[packetData.length + 1]; fullPacket[0] = Serial.TOS_SERIAL_ACTIVE_MESSAGE_ID; System.arraycopy(packetData, 0, fullPacket, 1, packetData.length); sender.writePacket(fullPacket); if (VERBOSE) Dump.dump("sent", fullPacket); } }
