Serial Communication: Three Exercises

//arduino exercase #1
void setup() {
  Serial.begin(9600);
  Serial.println("0,0");
}

void loop() {
  while (Serial.available()) {
    if (Serial.read() == '\n') {
      int sensor = analogRead(A0);
      delay(1);
      Serial.print(sensor);
      Serial.println(',');
    }
  }
}

//processing exercise #1

import processing.serial.*;
Serial myPort;
int xPos=0;
int yPos=height/2;

void setup() {
  size(960, 720);
  printArray(Serial.list());
  String portname=Serial.list()[3];
  println(portname);
  myPort = new Serial(this, portname, 9600);
  myPort.clear();
  myPort.bufferUntil('\n');
}

void draw() {
  background(255);
  ellipse(xPos, yPos, 30, 30);
}

void serialEvent(Serial myPort) {
  String s=myPort.readStringUntil('\n');
  s=trim(s);
  if (s!=null) {
    println(s);
    int values[]=int(split(s, ','));
    if (values.length==2) {
      xPos=(int)map(values[0], 0, 1023, 0, width);
    }
  }
  myPort.write(xPos+','+"\n");
}

//arduino exercise #2

int left = 0;
int right = 0;

void setup() {
  Serial.begin(9600);
  Serial.println("0,0");
  pinMode(3, OUTPUT);
}

void loop() {
  while (Serial.available()) {
    right = Serial.parseInt();
    left = Serial.parseInt();
    if (Serial.read() == '\n') {
      analogWrite(3, right);
      Serial.print(0);
      Serial.print(',');
      Serial.println(0);
    }
  }
}

//processing exercise #2 

import processing.serial.*;
Serial myPort;
int xPos=0;

void setup(){
  size(960,720);
  printArray(Serial.list());
  String portname=Serial.list()[3];
  println(portname);
  myPort = new Serial(this,portname,9600);
  myPort.clear();
  myPort.bufferUntil('\n');
}

void draw(){
  background(255);
}

void serialEvent(Serial myPort){
  String s=myPort.readStringUntil('\n');
  s=trim(s);
  if (s!=null){
    println(s);
    int values[]=int(split(s,','));
    if (values.length==2){
      xPos=(int)map(mouseX,0,width, 0, 255);
    }
  }
  myPort.write(xPos+","+0+"\n");
}

//arduino exercise #3
 
void setup() {
  Serial.begin(9600);
  Serial.println("0,0");
  pinMode(3, OUTPUT);
}
 
void loop() {
  while (Serial.available()) {
    int onOff = Serial.parseInt();
    if (Serial.read() == '\n') {
      digitalWrite(3, onOff);
      int sensor = analogRead(A0);
      delay(1);
      Serial.println(sensor);
    }
  }
}

//processing exercise #3

import processing.serial.*;
Serial myPort;

PVector velocity;
PVector gravity;
PVector position;
PVector acceleration;
PVector wind;
float drag = 0.99;
float mass = 50;
float hDampening;
boolean onOff=false;
float analog;

void setup() {
  size(640, 360);
  String portname=Serial.list()[3];
  println(portname);
  myPort = new Serial(this, portname, 9600);
  myPort.clear();
  myPort.bufferUntil('\n');

  noFill();
  position = new PVector(width/2, 0);
  velocity = new PVector(0, 0);
  acceleration = new PVector(0, 0);
  gravity = new PVector(0, 0.5*mass);
  wind = new PVector(0, 0);
  hDampening=map(mass, 15, 80, .98, .96);
}
void draw() {
  background(255);
  if (!keyPressed) {
    wind.x= analog;
    velocity.x*=hDampening;
  }
  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) {
    velocity.y *= -0.9;  // A little dampening when hitting the bottom
    position.y = height-mass/2;
  }
  
  if (position.y >= height - mass){
  onOff = true;
  }
  else{
  onOff = false;
  }
}

void serialEvent(Serial myPort) {
  String s=myPort.readStringUntil('\n');
  s=trim(s);
  int values = parseInt(s);
  if (s!=null) {
    analog =map(values, 0, 1023, -3, 3);
  }
  myPort.write(int(onOff)+"\n");
}

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

void keyPressed() {
  if (key==' ') {
    mass=random(15, 80);
    position.y=-mass;
    velocity.mult(0);
  }
}

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