Processing Arduino communication

Processing Electronics (Arduino, etc.)
1

Hi everyone, i am working with processing and arduino. I am trying to pass via serial method a String “x;y” where x and y are integers from arduino to Processing. Then i want to plot on processing the x and y separately, but i can’t accomplish this since y is always zero. Someone can help?

processing:

Serial myPort;  // The serial port
String coor;
int[] x = new int[width];
int[] y = new int[height];
int i = 0;

void setup() {
  // List all the available serial ports:
  printArray(Serial.list());
  // Open the port you are using at the rate you want:
  myPort = new Serial(this, Serial.list()[0], 115200);
  size(600, 600);
  background(255);
}

void draw() {
  while (myPort.available() > 0) {
    String inBuffer = myPort.readString();
    if (inBuffer != null) {
      int[] coor = int(split(inBuffer, ';'));
      x[i] = coor[0];
      y[i] = coor[1];
      println(inBuffer);
      println(coor[1]);
      i++;
    }
  }
}

arduino:

void setup() {
  Serial.begin(115200);
  Serial.println();
}

void loop() {
  int x = random(0, 251);
  int y = random(0, 361);
  Serial.print(x);
  Serial.write(';');
  Serial.println(y);
  delay(1000);
}
2

Hello @chrisBon8 ,

You are missing:

import processing.serial.*;

This will work and was tested:

image
image1051×1021 60.2 KB

Look up the references.

Also take a look at:
https://www.arduino.cc/reference/en/language/functions/communication/serial/println/

:)

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