Recitation_8_Exercise_1_Arduino

void setup() {
  Serial.begin(9600);
}

void loop() {
  int sensor1 = analogRead(A0);
  int sensor2 = analogRead(A1);
  
  Serial.print(sensor1);
  Serial.print(",");  
  Serial.print(sensor2);
  Serial.println();

  delay(100);
}

Recitation_8_Exercise_1_Processing

import processing.serial.*;

String myString = null;
Serial myPort;

int NUM_OF_VALUES = 2; 
int[] sensorValues; 
int PORT_INDEX = 5;

void setup() {
  size(500, 500);
  background(0);
  setupSerial();
}

void draw() {
  updateSerial();
  printArray(sensorValues);

  // use the values like this!
  // sensorValues[0] 
  //background(0);
  float x = map(sensorValues[0], 0, 1024, 0, 500);
  float y = map(sensorValues[1], 0, 1024, 0, 500);
  noStroke();
  ellipse(x, y, 10, 10);
}



void setupSerial() {
  printArray(Serial.list());
  myPort = new Serial(this, Serial.list()[ PORT_INDEX ], 9600);
  // WARNING!
  // You will definitely get an error here.
  // Change the PORT_INDEX to 0 and try running it again.
  // And then, check the list of the ports,
  // find the port "/dev/cu.usbmodem----" or "/dev/tty.usbmodem----" 
  // and replace PORT_INDEX above with the index number of the port.

  myPort.clear();
  // Throw out the first reading,
  // in case we started reading in the middle of a string from the sender.
  myString = myPort.readStringUntil( 10 );  // 10 = '\n'  Linefeed in ASCII
  myString = null;

  sensorValues = new int[NUM_OF_VALUES];
}



void updateSerial() {
  while (myPort.available() > 0) {
    myString = myPort.readStringUntil( 10 ); // 10 = '\n'  Linefeed in ASCII
    if (myString != null) {
      String[] serialInArray = split(trim(myString), ",");
      if (serialInArray.length == NUM_OF_VALUES) {
        for (int i=0; i<serialInArray.length; i++) {
          sensorValues[i] = int(serialInArray[i]);
        }
      }
    }
  }
}