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using state changed callback for more accurate incoming serial data throughput

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This commit is contained in:
fros4943 2008-12-03 13:04:21 +00:00
parent e86b63112a
commit 8c4d5b51f9
1 changed files with 31 additions and 17 deletions
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48
tools/cooja/apps/mspsim/src/se/sics/cooja/mspmote/interfaces/SkySerial.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: SkySerial.java,v 1.5 2008/11/26 16:23:43 nifi Exp $
* $Id: SkySerial.java,v 1.6 2008/12/03 13:04:21 fros4943 Exp $
*/
package se.sics.cooja.mspmote.interfaces;
@ -69,6 +69,10 @@ public class SkySerial extends Log implements SerialPort, USARTListener {
private class SerialDataObservable extends Observable {
private void notifyNewData() {
if (this.countObservers() == 0) {
return;
}
setChanged();
notifyObservers(SkySerial.this);
}
@ -89,11 +93,16 @@ public class SkySerial extends Log implements SerialPort, USARTListener {
}
}
public void stateChanged(int state) {
if (state == USARTListener.RXFLAG_CLEARED) {
tryWriteNextByte();
}
}
public void writeByte(byte b) {
incomingData.add(b);
if (!writeDataEvent.isScheduled()) {
mote.getSimulation().scheduleEvent(writeDataEvent, mote.getSimulation().getSimulationTime());
}
tryWriteNextByte();
mote.getSimulation().scheduleEvent(writeDataEvent, mote.getSimulation().getSimulationTime());
}
public void writeString(String s) {
@ -124,19 +133,24 @@ public class SkySerial extends Log implements SerialPort, USARTListener {
return lastSerialData;
}
private void tryWriteNextByte() {
if (incomingData.isEmpty()) {
return;
}
if (!usart.isReceiveFlagCleared()) {
return;
}
/* Write byte to serial port */
byte b = incomingData.remove(0);
usart.byteReceived(b);
}
private TimeEvent writeDataEvent = new TimeEvent(0) {
public void execute(int t) {
/* TODO Implement MSPSim callback - better timing */
/* Write another byte to serial port */
tryWriteNextByte();
if (!incomingData.isEmpty()) {
if (usart.isReceiveFlagCleared()) {
byte b = incomingData.remove(0);
usart.byteReceived(b);
}
if (!incomingData.isEmpty()) {
mote.getSimulation().scheduleEvent(this, t+1);
}
mote.getSimulation().scheduleEvent(this, t+1);
}
}
};
@ -160,7 +174,9 @@ public class SkySerial extends Log implements SerialPort, USARTListener {
if (command != null) {
try {
int previous = historyCount - 1;
if (previous < 0) previous += history.length;
if (previous < 0) {
previous += history.length;
}
if (!command.equals(history[previous])) {
history[historyCount] = command;
historyCount = (historyCount + 1) % history.length;
@ -260,8 +276,6 @@ public class SkySerial extends Log implements SerialPort, USARTListener {
panel.add(BorderLayout.CENTER, scrollPane);
panel.add(BorderLayout.SOUTH, sendPane);
return panel;
}
protected void addToLog(String text) {