Crafting Material Interfaces

void setup()
{
Serial.begin(9600);
pinMode(sensorPin, INPUT);
digitalWrite(sensorPin,HIGH);
}

Serial myPort; // The serial port
int xPos = 1; // horizontal position of the graph
Sample tone;

void setup () {
// set the window size:
size(400, 300);

// List all the available serial ports
println(Serial.list());
// I know that the first port in the serial list on my mac
// is always my Arduino, so I open Serial.list()[0].
// Open whatever port is the one you're using.
myPort = new Serial(this, Serial.list()[0], 9600);
// don't generate a serialEvent() unless you get a newline character:
myPort.bufferUntil('\n');
// set inital background:
background(0);

Sonia.start(this);

// Create a new sample object.
tone = new Sample( "tone.wav" );

// Loop the sound forever
// (well, at least until stop() is called)
tone.repeat();
tone.setVolume(1);
smooth();
}

void draw () {
// everything happens in the serialEvent()
}

void serialEvent (Serial myPort) {
// get the ASCII string:
String inString = myPort.readStringUntil('\n');

if (inString != null) {
// trim off any whitespace:
inString = trim(inString);
// convert to an int and map to the screen height:
float inByte = float(inString);
inByte = map(inByte, 0, 1023, 0, height);

// draw the line:
stroke(127,34,255);
line(xPos, height, xPos, height - inByte);

// change the playback speed using the incoming data
float ratio = (float) inByte/height;
//println(ratio);
tone.setRate(ratio*88200, 0);
//tone.setVolume(ratio);

// at the edge of the screen, go back to the beginning:
if (xPos >= width) {
xPos = 0;
background(0);
}
else {
// increment the horizontal position:
xPos++;
}
}

}

// Pressing the mouse stops and starts the sound
void mousePressed() {
if (tone.isPlaying()) {
tone.stop(); // The sound can be stopped with the function stop().
} else {
tone.repeat();
}
}