* Originally by Aaron Sherwood

 * Modified by Mangtronix

 *

 * Add this library to Sketch files

 *  https://github.com/mangtronix/IntroductionToInteractiveMedia/blob/master/code/p5.web-serial.js files

 *

 * You must include this line in your index.html (in Sketch Files) to load the

 * web-serial library

 *

 *     <script src="p5.web-serial.js"></script>

 *

 * Arduino code:

 * https://github.com/mangtronix/IntroductionToInteractiveMedia/blob/master/code/Week11Serial.ino

 */

​

​

function setup() {

  createCanvas(640, 480);

  textSize(18);

}

​

function draw() {

  background(205);

​

  // the other value controls the text's transparency value

  fill(0)

​

  if (!serialActive) {

    text("Press Space Bar to select Serial Port", 20, 30);

  } else {

    text("Connected", 20, 30);

​

  }

​

  // when clicked, digital LED will turn on,

  // other analog write LED will have brightness corresponding to the height of the mouse when it is press. can be pressed and dragged for controlling brightness

  if (mouseIsPressed) {

      LEDbright = mouseY;

  } else {

    LEDbright = 0;

  }

}

​

function keyPressed() {

  if (key == " ") {

    // important to have in order to start the serial connection!!

    setUpSerial();

  }

}

​

function readSerial(data) {

  ////////////////////////////////////

  //READ FROM ARDUINO HERE

  ////////////////////////////////////

​

  if (data != null) {

    // dont need any data from arduino

    let fromArduino = 0;

​

​

    //////////////////////////////////

    //SEND TO ARDUINO HERE (handshake)

    //////////////////////////////////

    //send the posiiton of mouseY when clicked to control brightness

    let sendToArduino = LEDbright + "," + LEDbright + "\n";

    writeSerial(sendToArduino);

  }

}

​

//Arduino Code

/*

// Week 11.2 Example of bidirectional serial communication

​

// Inputs:

// - A0 - sensor connected as voltage divider (e.g. potentiometer or light sensor)

// - A1 - sensor connected as voltage divider 

//

// Outputs:

// - 2 - LED

// - 5 - LED

​

int leftLedPin = 2;

int rightLedPin = 5;

​

void setup() {

  // Start serial communication so we can send data

  // over the USB connection to our p5js sketch

  Serial.begin(9600);

​

  // We'll use the builtin LED as a status output.

  // We can't use the serial monitor since the serial connection is

  // used to communicate to p5js and only one application on the computer

  // can use a serial port at once.

  pinMode(LED_BUILTIN, OUTPUT);

​

  // Outputs on these pins

  pinMode(leftLedPin, OUTPUT);

  pinMode(rightLedPin, OUTPUT);

​

  // Blink them so we can check the wiring

  digitalWrite(leftLedPin, HIGH);

  digitalWrite(rightLedPin, HIGH);

  delay(200);

  digitalWrite(leftLedPin, LOW);

  digitalWrite(rightLedPin, LOW);

​

​

​

  // start the handshake

  while (Serial.available() <= 0) {

    digitalWrite(LED_BUILTIN, HIGH); // on/blink while waiting for serial data

    Serial.println("0,0"); // send a starting message

    delay(300);            // wait 1/3 second

    digitalWrite(LED_BUILTIN, LOW);

    delay(50);

  }

}

​

void loop() {

  // wait for data from p5 before doing something

  while (Serial.available()) {

    digitalWrite(LED_BUILTIN, HIGH); // led on while receiving data

​

    int left = Serial.parseInt();

    int right = Serial.parseInt();

    if (Serial.read() == '\n') {

      digitalWrite(leftLedPin, left);

      digitalWrite(rightLedPin, right);

      int sensor = analogRead(A0);

      delay(5);

      int sensor2 = analogRead(A1);

      delay(5);

      Serial.print(sensor);

      Serial.print(',');

      Serial.println(sensor2);

    }

  }

  digitalWrite(LED_BUILTIN, LOW);

}

*/

​