osd-contiki/tools/cooja/examples/appmote_rimeabc/RimeABC.java

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/*
* Copyright (c) 2010, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the Institute 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 INSTITUTE 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 THE INSTITUTE OR 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.
*
*
*/
import java.util.Random;
import se.sics.cooja.COOJARadioPacket;
import se.sics.cooja.MoteTimeEvent;
import se.sics.cooja.MoteType;
import se.sics.cooja.RadioPacket;
import se.sics.cooja.Simulation;
import se.sics.cooja.interfaces.ApplicationLED;
import se.sics.cooja.interfaces.ApplicationRadio;
import se.sics.cooja.motes.AbstractApplicationMote;
/**
* Example application-level mote.
* Imitates the same behavior as /examples/rime/example-abc.c.
*
* This mote is simulated in COOJA via the Imported App Mote Type.
*
* @author Fredrik Osterlind
*/
public class RimeABC extends AbstractApplicationMote {
private Simulation simulation = null;
private Random random = null;
private ApplicationRadio radio = null;
private ApplicationLED leds = null;
private final static byte RIME_CHANNEL1 = (byte) 128;
private final static byte RIME_CHANNEL2 = (byte) 0;
private final static RadioPacket RIME_ABC_DATA =
new COOJARadioPacket(new byte[] {
RIME_CHANNEL1, RIME_CHANNEL2,
'H', 'e', 'l', 'l', 'o', '\0'
});
public RimeABC() {
super();
}
public RimeABC(MoteType moteType, Simulation simulation) {
super(moteType, simulation);
}
public void execute(long time) {
/*System.out.println(this + ": execute(" + time + ")");*/
if (radio == null) {
simulation = getSimulation();
random = simulation.getRandomGenerator();
radio = (ApplicationRadio) getInterfaces().getRadio();
leds = (ApplicationLED) getInterfaces().getLED();
}
/* Delay 2-4 seconds */
simulation.scheduleEvent(
transmitEvent,
simulation.getSimulationTime() +
(2000 + random.nextInt(2000))*Simulation.MILLISECOND
);
}
private MoteTimeEvent transmitEvent = new MoteTimeEvent(this, 0) {
public void execute(long t) {
/* Transmit Rime abc radio packet.
* sentPacket is called when transmission finishes. */
radio.startTransmittingPacket(
RIME_ABC_DATA, 1*Simulation.MILLISECOND);
/* Turn on red LED */
leds.setLED(ApplicationLED.LEDS_RED);
}
};
public void receivedPacket(RadioPacket p) {
byte[] packetData = p.getPacketData();
if (packetData.length < 3) {
/* Too small */
return;
}
if (packetData[0] != RIME_CHANNEL1 || packetData[1] != RIME_CHANNEL2) {
/* Wrong Rime channel */
return;
}
byte[] noHeader = new byte[packetData.length-2-1];
System.arraycopy(packetData, 2, noHeader, 0, noHeader.length);
String test = new String(noHeader);
log("abc message received '" + test + "'");
/* Turn on green LED */
leds.setLED(ApplicationLED.LEDS_GREEN);
}
public void sentPacket(RadioPacket p) {
log("abc message sent");
requestImmediateWakeup(); /* Triggers execute method */
}
public String toString() {
return "App Rime ABC " + getID();
}
}