Serial Communication Exercise- Yunho and Kashyapa

Exercise 1

N/A

Exercise 2

let serial; // variable to hold an instance of the serialport library
let portName = "COM3"; // fill in your serial port name here
let xPos=0;
let yPos=240;
let onOff=0;
let val;

function setup() {
  createCanvas(640, 480);
  serial = new p5.SerialPort(); // make a new instance of the serialport library
  serial.on("list", printList); // set a callback function for the serialport list event
  serial.on("connected", serverConnected); // callback for connecting to the server
  serial.on("open", portOpen); // callback for the port opening
  serial.on("data", serialEvent); // callback for when new data arrives
  serial.on("error", serialError); // callback for errors
  serial.on("close", portClose); // callback for the port closing

  serial.list(); // list the serial ports
  serial.open(portName); // open a serial port
}

function draw() {
  background(255);
  val = map(mouseX, 0, width, 0, 255);
}

// get the list of ports:
function printList(portList) {
  // portList is an array of serial port names
  for (let i = 0; i < portList.length; i++) {
    // Display the list the console:
    print(i + " " + portList[i]);
  }
}

function serverConnected() {
  print("connected to server.");
}

function portOpen() {
  print("the serial port opened.");
}

function serialEvent() {
  // read a string from the serial port
  // until you get carriage return and newline:
  let inString = serial.readLine();
  serial.write(val);
}

function serialError(err) {
  print("Something went wrong with the serial port. " + err);
}

function portClose() {
  print("The serial port closed.");
}

/*
Arduino code
void setup() {
  Serial.begin(9600);
  pinMode(2, OUTPUT);
  pinMode(5, OUTPUT);
  while (Serial.available() <= 0) {
    Serial.println("0,0"); // send a starting message
    delay(300);              // wait 1/3 second
  }
}
void loop() {
  while (Serial.available() > 0) {
    // read the incoming byte:
    int inByte = Serial.read();
    analogWrite(5,inByte);
    Serial.println();
  }
}
*/

Exercise 3

let serial; // variable to hold an instance of the serialport library
let portName = "COM7"; // fill in your serial port name here

let velocity;
let gravity;
let position;
let acceleration;
let wind;
let drag = 0.99;
let mass = 50;
let windVal;

function setup() {
  createCanvas(640, 360);
  noFill();
  position = createVector(width/2, 0);
  velocity = createVector(0,0);
  acceleration = createVector(0,0);
  gravity = createVector(0, 0.5*mass);
  wind = createVector(0,0);
  
  serial = new p5.SerialPort(); // make a new instance of the serialport library
  serial.on("list", printList); // set a callback function for the serialport list event
  serial.on("connected", serverConnected); // callback for connecting to the server
  serial.on("open", portOpen); // callback for the port opening
  serial.on("data", serialEvent); // callback for when new data arrives
  serial.on("error", serialError); // callback for errors
  serial.on("close", portClose); // callback for the port closing

  serial.list(); // list the serial ports
  serial.open(portName); // open a serial port
}

// get the list of ports:
function printList(portList) {
  // portList is an array of serial port names
  for (let i = 0; i < portList.length; i++) {
    // Display the list the console:
    print(i + " " + portList[i]);
  }
}

function serverConnected() {
  print("connected to server.");
}

function portOpen() {
  print("the serial port opened.");
}

function serialEvent() {
  // read a string from the serial port
  // until you get carriage return and newline:
  let inString = serial.readLine();
  print(inString);
  if (inString.length > 0){
    windVal = map(inString, 0, 1023, -3, 3);
  }
}

function serialError(err) {
  print("Something went wrong with the serial port. " + err);
}

function portClose() {
  print("The serial port closed.");
}

function draw() {
  background(255);
  
  wind.x = windVal;
  
  applyForce(wind);
  applyForce(gravity);
  velocity.add(acceleration);
  velocity.mult(drag);
  position.add(velocity);
  acceleration.mult(0);
  ellipse(position.x,position.y,mass,mass);
  
  if (position.y > height-mass/2 - 25){
    serial.write(255);
  }
  else serial.write(0);
  
  if (position.y > height-mass/2) {
      velocity.y *= -0.9;  // A little dampening when hitting the bottom
      position.y = height-mass/2;
    }
}

function applyForce(force){
  // Newton's 2nd law: F = M * A
  // or A = F / M
  let f = p5.Vector.div(force, mass);
  acceleration.add(f);
}

function keyPressed(){
  if (keyCode==LEFT_ARROW){
    wind.x=-1;
  } 
  if (keyCode==RIGHT_ARROW){
    wind.x=1;
  }
  if (key==' '){
    mass=random(15,80);
    position.x=width/2;
    position.y=-mass;
    velocity.mult(0);
  }
}

/*
Arduino code
void setup() {
  Serial.begin(9600);
  pinMode(2, OUTPUT);
  while (Serial.available() <= 0) {
    Serial.println("0"); // send a starting message
    delay(300);              // wait 1/3 second
  }
}
void loop() {
  while (Serial.available() > 0) {
    // read the incoming byte:
    int inByte = Serial.read();
    analogWrite(2, inByte);
    int WindPower = analogRead(A0);
    Serial.println(WindPower);
    
  }
}
*/