Added src ClapControl

lesson3/ClapControl/src/ClapControl.java

+import lejos.nxt.*;
+
+public class ClapControl {
+	static ADSensorPort soundSensor = SensorPort.S3;
+	static int soundThreshold = 85;
+	static int clapCount = 0;
+
+	private static void waitForClap() throws Exception {
+		int soundLevel;
+		double timerStart;
+		double timerStop;
+		double diff;
+
+		do
+		{
+			do
+			{
+				soundLevel = soundSensor.readValue();
+				LCD.drawInt(soundLevel,4,10,0); 
+			}
+			while ( soundLevel < soundThreshold );
+			timerStart = System.currentTimeMillis();
+			do
+			{
+				// Stopwatch running
+				soundLevel = soundSensor.readValue();
+				LCD.drawInt(soundLevel,4,10,0); 
+			}
+			while ( soundLevel > soundThreshold );
+			timerStop = System.currentTimeMillis();
+			diff = timerStop - timerStart;
+			//LCD.drawInt((int)diff,4,10,1);
+		}
+		while( !(25 < diff && diff < 110));
+	}
+
+	public static void main(String[] args) throws Exception {
+		soundSensor.setTypeAndMode(SoundSensor.TYPE_SOUND_DB, SoundSensor.MODE_PCTFULLSCALE);
+		while (! Button.ESCAPE.isDown())
+		{
+			waitForClap();		
+			LCD.drawString("Clap Count: " + clapCount,0,1);
+			clapCount++;
+		}
+	}
+
+}