WEEK 11 EXERCISES W/PIERRE

Exercise 1

IMG_7102

let rVal = 0;
let potentiometerInput = 0;
let circleX;


function setup() {
  createCanvas(640, 480);
  textSize(18);
  circleX = width/2;
}

function draw() {
  // one value from Arduino controls the background's red color
  background(255);

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

  if (!serialActive) {
    text("Press Space Bar to select Serial Port", 20, 30);
  } else {
    text("Connected", 20, 30);
    

    // Print the current values
    text('potentiometerInput = ' + str(potentiometerInput), 20, 70);

  }
  
  //Draws the circle 
  circle(circleX,height/2,100);
}

function keyPressed() {
  if (key == " ") {
    // important to have in order to start the serial connection!!
    setUpSerial();
  }
}

// This function will be called by the web-serial library
// with each new line of data. The serial library reads
// the data until the newline and then gives it to us through
// this callback function
function readSerial(data) {
  ////////////////////////////////////
  //READ FROM ARDUINO HERE
  ////////////////////////////////////

  if (data != null) {
    // make sure there is actually a message
    // split the message
    let fromArduino = split(trim(data), ",");

    // if the right length, then proceed
    if (fromArduino.length == 1) {
      // only store values here
      // do everything with those values in the main draw loop
      
      // We take the string we get from Arduino and explicitly
      // convert it to a number by using int()
      // e.g. "103" becomes 103
      
      
      potentiometerInput = int(fromArduino[0]);
      
      //Maps the potentiometer input value to the width of the canvas.
      circleX = map(potentiometerInput,0,1023,0,width);


      
    }
    let sendToArduino = "\n";
    writeSerial(sendToArduino);
    
  }
}

P5

void setup() {

  Serial.begin(9600);

  // 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
      
      delay(5);
       if (Serial.read() == '\n') {
      int potentiometer = analogRead(A1);
      delay(5);
      Serial.println(potentiometer);
      Serial.print(',');
      Serial.println(potentiometer);
       }
    }
      digitalWrite(LED_BUILTIN, LOW);
  }

Arduino

Exercise 2

 ASSIGNMENT 2

while (Serial.available()) {
    Serial.println("0,0");
    digitalWrite(LED_BUILTIN, HIGH); // led on while receiving data
    int value = Serial.parseInt();
    int value2 = Serial.parseInt();
    if (Serial.read() == '\n') {
      analogWrite(ledPin, value);
      analogWrite(ledPin2, value2);
    }
  }

Arduino

function readSerial(data) {
  if (data != null) {
    //////////////////////////////////
  //SEND TO ARDUINO HERE (handshake)
  //////////////////////////////////
  value = int(map(mouseY,0, height, 0, 255));
  value2 = int(map(mouseX,0, width, 0, 255));
  let led1 = value + "\n";
  let led2 = value2 + "\n";
  writeSerial(led1);
  writeSerial(led22);
  print(value);
  print(value2)
    
    
  }

p5

ASSIGNMENT 3

void loop() {
  // wait for data from p5 before doing something
  while (Serial.available()) {
    // led on while receiving data
    digitalWrite(LED_BUILTIN, HIGH); 
    // gets value from p5
    int value = Serial.parseInt();
    // led switch from p5 value input
    if (Serial.read() == '\n') {
      if (value == 1) {
        digitalWrite(ledPin, HIGH);
      }
      else {
        digitalWrite(ledPin, LOW);
      }
      
      // gets sensor value
      int sensor = analogRead(A0);
      delay(5);
      // sends sensor value to p5
      Serial.println(sensor);
    }
  }
  digitalWrite(LED_BUILTIN, LOW);
  
}

Arduino