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Moritz Kemper (Unlicensed)

Moritz Kemper (Unlicensed)

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Code Block
languagejava
titleBeispiel Processing zu Arduino
collapsetrue
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], 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"); 
 myPort.write("r"); 
  delay(1000);
}

Um auf der Seite des Arduino auf eingehende Nachrichten über die serielle Schnittstelle zu horchen müssen wir einige Funktionen benutzen. Diese sind:

Code Block
languagejava
titleBeispiel Werte in Arduino empfangen
collapsetrue
#define LED_PIN 6
String incomingString ="";
int incomingValues[3];

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

void loop()
{
  if (Serial.available() > 0)
  {
    incomingString = Serial.readStringUntil('\n');
    split(incomingString,incomingValues);
  }
  
  analogWrite(LED_PIN, incomingValues[0]);
}

void split(String inputString, int *returnData)
{
  int index = 0;
  int lastPos = 0;
  
  for(int i=0; i<inputString.length();i++)
  {
    if(inputString.charAt(i) == ',')
    {
      String tempStr = inputString.substring(lastPos,i-1);
      returnData[index] = tempStr.toInt();
      index++;
      lastPos = i+1;
    }
  }
}