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import processing.serial.*;  // Import the Processing Serial Library for communicating with arduino
Serial myPort;               // The used Serial Port
 
int firstValue, secondValue; // fourthValue, fifthValue, ... // add more if needed
 
void setup()
{
  size(500, 500);
  println(Serial.list()); // Prints the list of serial available devices (Arduino should be on top of the list)
  myPort = new Serial(this, Serial.list()[0]"/dev/cu.usbmodem12131", 9600); // Open a new port and connect with Arduino at 9600 baud
}
 
void draw()
{
}
 
void serialEvent(Serial myPort) // Is called everytime there is new data to read
{
  if (myPort.available() > 0)
  {
    String completeString = myPort.readStringUntil(10'\n'); // Read the Serial port until there is a linefeed/carriage return
    if (completeString != null) // If there is valid data insode the String
    {
      completeString = trim(completeString); // Remove whitespace characters at the beginning and end of the string
      String seperateValues[] = split(completeString, ","); // Split the string everytime a delimiter is received
      firstValue = int(seperateValues[0]);
      secondValue = int(seperateValues[1]);
    }
  }
}

import processing.serial.*;  // Import the Processing Serial Library for communicating with arduino
Serial myPort;               // The used Serial Port
 
void setup()
{
  background(0);
  size(500, 500);
  println(Serial.list()); // Prints the list of serial available devices (Arduino should be on top of the list)
  myPort = new Serial(this, Serial.list()[0]"/dev/cu.usbmodem12131", 9600); // Open a new port and connect with Arduino at 9600 baud
}
 
void draw()
{
  int firstValue = 111;
  int secondValue = 222;
  int thirdValue = 333;
   
  myPort.write(str(firstValue));
  myPort.write(",");
  myPort.write(str(secondValue));
  myPort.write(",");
  myPort.write(str(thirdValue));
  myPort.write("\n"); 
  delay(1000);
}