Introduction to Physical Computing

ITP

​

This sketch will send one value in ascii from arduino to P5

See arduino code in bottom, have pot connected to A0*/

​

var serial; // variable to hold an instance of the serialport library

var fromSerial = 0; //variable to hold the data

let array = [],

  count = 0,

  total = 0,

  avg = 0;

​

function setup() {

  createCanvas(320, 240);

  serial = new p5.SerialPort(); // make a new instance of  serialport librar    

  serial.on('list', printList); // callback function for serialport list event

  serial.on('data', serialEvent); // callback for new data coming in    

  serial.list(); // list the serial ports

  serial.open("/dev/cu.usbmodem1421"); // open a port

}

​

function draw() {

  background(255);

  total = 0;

count = ((count++)+5)%5;

  if (count < 5) {

    array[count] = fromSerial;

    //count++;

    for (let i = 0; i < array.length; i++) {

      total += array[i];

    }

    avg = total / array.length;

    console.log(avg);

​

  }

​

  textSize(avg);

  text(avg, 0, height / 2);

  console.log(array);

}

​

​

// get the list of ports:

function printList(portList) {

  for (var i = 0; i < portList.length; i++) {

    // Display the list the console:

    println(i + " " + portList[i]);

  }

}

​

function serialEvent() {

  // this is called when data is recieved, data will then live in fromSerial    

  var stringFromSerial = serial.readLine();

  if (stringFromSerial.length > 0) {

    var trimmedString = trim(stringFromSerial);

    fromSerial = Number(trimmedString);

  }

}

​

/*  

// Arduino Code 

void setup() {

  Serial.begin(9600);

}

void loop() {

  int analogValue = analogRead(A0);

  Serial.println(analogValue);

  delay(50);

}

*/