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added support for new busy-wait radio interfaces (+fixed null pointer bug)

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This commit is contained in:
fros4943 2006-10-05 07:53:06 +00:00
parent b25f16936b
commit d6bbf0cf3d
1 changed files with 46 additions and 35 deletions
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81
tools/cooja/java/se/sics/cooja/radiomediums/StandardRadioMedium.java
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@ -26,7 +26,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: StandardRadioMedium.java,v 1.2 2006/10/02 15:19:28 fros4943 Exp $
* $Id: StandardRadioMedium.java,v 1.3 2006/10/05 07:53:06 fros4943 Exp $
*/
package se.sics.cooja.radiomediums;
@ -69,8 +69,8 @@ public class StandardRadioMedium extends RadioMedium {
private Vector<Position> registeredPositions = new Vector<Position>();
private Vector<Radio> registeredRadios = new Vector<Radio>();
private Vector<Position> sendingPositions = new Vector<Position>();
private Vector<Radio> sendingRadios = new Vector<Radio>();
private Vector<Position> newSendingPositions = new Vector<Position>();
private Vector<Radio> newSendingRadios = new Vector<Radio>();
private static RadioMedium myRadioMedium;
@ -221,6 +221,9 @@ public class StandardRadioMedium extends RadioMedium {
if (moteRadio.isTransmitting())
return new Color[]{Color.BLUE};
if (moteRadio.isInterfered())
return new Color[]{Color.RED};
if (moteRadio.isReceiving())
return new Color[]{Color.GREEN};
@ -302,11 +305,12 @@ public class StandardRadioMedium extends RadioMedium {
private static double TRANSMITTING_RANGE = 20; // 20m
private static double INTERFERENCE_RANGE = 40; // 40m
private static boolean RECEIVE_MY_OWN_PACKETS = false;
private static boolean DETECT_MY_OWN_PACKETS = true;
private class RadioMediumObservable extends Observable {
private void transferredData() {
private void transmissionStarted() {
setChanged();
notifyObservers();
}
private void radiosChanged() {
setChanged();
notifyObservers();
}
@ -319,46 +323,56 @@ public class StandardRadioMedium extends RadioMedium {
private Observer radioDataObserver = new Observer() {
public void update(Observable radio, Object obj) {
if (((Radio) radio).getLastEvent() == Radio.RadioEvent.TRANSMISSION_FINISHED) {
if (!sendingPositions.contains((Position) obj)) {
sendingPositions.add((Position) obj);
sendingRadios.add((Radio) radio);
if (((Radio) radio).getLastEvent() == Radio.RadioEvent.TRANSMISSION_STARTED) {
// If obj is the position, use it directly (speeds up things)
// Otherwise we must search for the position ourselves
Position sendingPosition = (Position) obj;
if (sendingPosition == null) {
if (!registeredRadios.contains(radio)) {
logger.fatal("Sending radio not registered, skipping packet");
return;
}
sendingPosition = registeredPositions.get(registeredRadios.indexOf(radio));
}
if (!newSendingRadios.contains(radio)) {
newSendingPositions.add(sendingPosition);
newSendingRadios.add((Radio) radio);
}
} else {
radioMediumObservable.radiosChanged();
}
}
};
private Observer tickObserver = new Observer() {
public void update(Observable obs, Object obj) {
RadioConnection[] oldTickConnections = lastTickConnections;
lastTickConnections = null;
if (sendingPositions.size() > 0) {
final int numberSending = sendingPositions.size();
if (newSendingPositions.size() > 0) {
final int numberSending = newSendingPositions.size();
lastTickConnections = new RadioConnection[numberSending];
// Loop through all sending radios
// Loop through all new sending radios
for (int sendNr = 0; sendNr < numberSending; sendNr++) {
Radio sendingRadio = sendingRadios.get(sendNr);
Radio sendingRadio = newSendingRadios.get(sendNr);
byte[] dataToSend = sendingRadio.getLastPacketTransmitted();
lastTickConnections[sendNr] = new RadioConnection();
lastTickConnections[sendNr].setSource(sendingRadios.get(sendNr),
sendingPositions.get(sendNr), dataToSend);
// Set sending radio unable to receive any more data
if (RECEIVE_MY_OWN_PACKETS) {
if (sendingRadio.isReceiving())
sendingRadio.interferReception();
}
lastTickConnections[sendNr].setSource(newSendingRadios.get(sendNr),
newSendingPositions.get(sendNr), dataToSend);
// Loop through all radios that are listening
for (int listenNr = 0; listenNr < registeredPositions.size(); listenNr++) {
Radio listeningRadio = registeredRadios.get(listenNr);
// If not the sending radio..
if (sendingRadios.get(sendNr) != registeredRadios.get(listenNr)) {
Radio listeningRadio = registeredRadios.get(listenNr);
if (sendingRadio != listeningRadio) {
double distance = sendingPositions.get(sendNr).getDistanceTo(
double distance = newSendingPositions.get(sendNr).getDistanceTo(
registeredPositions.get(listenNr));
if (distance <= TRANSMITTING_RANGE) {
@ -369,24 +383,21 @@ public class StandardRadioMedium extends RadioMedium {
// If close enough to transmit ok..
if (listeningRadio.isReceiving()) {
// .. but listening radio already received a packet
listeningRadio.interferReception();
listeningRadio.interferReception(sendingRadio.getTransmissionEndTime());
} else {
// .. send packet
listeningRadio.receivePacket(dataToSend, 0);
listeningRadio.receivePacket(dataToSend, sendingRadio.getTransmissionEndTime());
}
} else if (distance <= INTERFERENCE_RANGE) {
// If close enough to sabotage other transmissions..
if (listeningRadio.isReceiving()) {
// .. and listening radio already received a packet
listeningRadio.interferReception();
}
listeningRadio.interferReception(sendingRadio.getTransmissionEndTime());
}
// else too far away
}
}
}
sendingPositions.clear();
sendingRadios.clear();
newSendingPositions.clear();
newSendingRadios.clear();
if (myLogger != null) {
for (RadioConnection conn : lastTickConnections)
@ -395,7 +406,7 @@ public class StandardRadioMedium extends RadioMedium {
}
if (lastTickConnections != oldTickConnections)
radioMediumObservable.transferredData();
radioMediumObservable.transmissionStarted();
}
};