Serial Communication Exercises

EXERCISE # 1

//Arduino:

int left = 0;
int right = 0;

void setup() {
  Serial.begin(9600);
  Serial.println("0,0");
  pinMode(2, OUTPUT);
  pinMode(5, OUTPUT);
}

void loop() {
  while (Serial.available()) {
    right = Serial.parseInt();
    left = Serial.parseInt();
    if (Serial.read() == '\n') {
      digitalWrite(2, right);
      digitalWrite(5, left);
      int sensor = analogRead(A0);
      delay(1);
      int sensor2 = analogRead(A1);
      delay(1);
      Serial.print(sensor);
      Serial.print(',');
      Serial.println(sensor2);
    }
  }
}

/*Processing :

import processing.serial.*;
Serial myPort;
int xPos=0;
boolean onOff=false;
boolean onOff2=false;

void setup(){
  size(960,720);
  printArray(Serial.list());
  String portname=Serial.list()[0];
  println(portname);
  myPort = new Serial(this,portname,9600);
  myPort.clear();
  myPort.bufferUntil('\n');
}

void draw(){
  background(255);
  ellipse(xPos,height/2,30,30);
}

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(int(onOff)+","+int(onOff2)+"\n");
}
*/

 

EXERCISE # 2

//Arduino:

int brightness;

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

void loop() {
  while (Serial.available()) {
    brightness = Serial.parseInt();
    if (Serial.read() == '\n') {
      analogWrite(3, brightness);
    }
  }
}



/*
Processing:
import processing.serial.*;
Serial myPort;
int yPos=0;
float brightness;

void setup(){
  size(960,720);
  printArray(Serial.list());
  String portname=Serial.list()[0];
  println(portname);
  myPort = new Serial(this,portname,9600);
  myPort.clear();
  myPort.bufferUntil('\n');
}

void draw(){
  background(255);
  ellipse(width/2,mouseY,30,30);
  brightness = map(mouseY,0,height,0,255);
  myPort.write(int(brightness)+ "\n");
}


*/

 

EXERCISE # 3

//Arduino

int onoff;

void setup() {
  Serial.begin(9600);
  Serial.println("0");
  pinMode(5, OUTPUT);
}

void loop() {
  while (Serial.available()) {
    onoff = Serial.parseInt();
    if (Serial.read() == '\n') {
      digitalWrite(5, onoff);
      int sensor = analogRead(A0);
      delay(1);
      Serial.println(sensor);
    }
  }
}


/*
Processing

import processing.serial.*;
Serial myPort;
PVector velocity;
PVector gravity;
PVector position;
PVector acceleration;
PVector wind;
float drag = 0.99;
float mass = 50;
float hDampening;
float windcontrolled;
boolean onoff = false;

void setup() {
  size(640,360);
  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);
  
  //port communication
  printArray(Serial.list());
  String portname=Serial.list()[0];
  println(portname);
  myPort = new Serial(this,portname,9600);
}

void draw() {
  background(255);
  if (!keyPressed){
    wind.x=windcontrolled;
    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);
  if (s!=null){
    int value = parseInt(s);
    windcontrolled = map(value,0,1023,-1, 1);
  }
  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 (keyCode==LEFT){
    wind.x=-1;
  }
  if (keyCode==RIGHT){
    wind.x=1;
  }
  if (key==' '){
    mass=random(15,80);
    position.y=-mass;
    velocity.mult(0);
  }
}
*/

 

EXERCISE # 3 VIDEO