import processing.serial.*;

Serial port;


String string;
void setup(){
    String portName = Serial.list()[2]; //change the 0 to a 1 or 2 etc. to match your port
    port = new Serial(this, portName, 9600);
    port.bufferUntil('n');
}

void draw() {

  printArray(string);
}

void keyPressed() {
  if (key =='1'){port.write('1');}
    if (key=='0') {port.write('0');}
    }

    void serialEvent(Serial port) {
      string = port.readStringUntil('n');}

char data;
int led = 13;

void setup() {
  pinMode(led, OUTPUT);
  Serial.begin(9600);

}

void loop() {
  if (Serial.available()>0){
    data = Serial.read();
  }


  if (data=='1'){
    Serial.println("HELLO");
    digitalWrite(led, HIGH);


    }

    else if (data=='0'){
      digitalWrite(led, LOW);
      Serial.println("BYE");}
    }