Arduino & Processing Serial Kommunikation – Tutorial #6

Arduino Tutorial #6: Processing Serial Kommunikation

Verbinden von Arduino mit Processing IDE über Serial Port. Bidirektionale Kommunikation: Processing sendet Befehle an Arduino (LED an/aus), Arduino sendet Taster-Status an Processing.

Komponenten

• Arduino Board
• Breadboard & Jumper-Wires
• LED
• 220 Ω Widerstand
• Taster

Schaltplan

Arduino Code

int led = 13;
int button = 12;

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

void loop() {
  if (Serial.available() > 0) {
    char ledState = Serial.read();
    if (ledState == '1') digitalWrite(led, HIGH);
    if (ledState == '0') digitalWrite(led, LOW);
  }
  int buttonState = digitalRead(button);
  if (buttonState == HIGH) {
    Serial.println("Button is pressed");
    delay(500);
  }
}

Processing Code

import processing.serial.*;

Serial myPort;
String myText = "";

void setup() {
  size(300, 300);
  myPort = new Serial(this, "COM4", 9600);
  myPort.bufferUntil('\n');
}

void serialEvent(Serial myPort) {
  myText = myPort.readStringUntil('\n');
}

void draw() {
  background(0);
  text(myText, 120, 120);
  myText = "";
  if (mousePressed && (mouseButton == LEFT)) {
    myPort.write('1');
  }
  if (mousePressed && (mouseButton == RIGHT)) {
    myPort.write('0');
  }
}

Linke Maustaste → LED an, Rechte Maustaste → LED aus. Taster-Druck → Text in Processing-Fenster.