I want to do something that should be simple, i only have been strumbling for hours...
I just want to send the frameCount of the processing sketch to arduino, and then send it back.
Then i want the frameCount value in the Serial monitor and when it get's send back in the processing console.

Arduino code:

1. void setup() {
     Serial.begin(9600);
   }
   
   void loop() {
     if (Serial.available()) {
       Serial.println(Serial.read());
     }
   }

1. import processing.serial.*;
   
   Serial port;
   String inString;
   
   void setup() {
     frameRate(1);
    println(Serial.list());
    port = new Serial(this, Serial.list()[1], 9600);
    port.bufferUntil('\n');
   }
   
   void draw() {
     port.write(frameCount);
     println(inString); 
   }
   
   void serialEvent(Serial port) {
     inString = port.readString(); 
   }

Serial monitor:
1
2
3
4

6
8
0
1
2
1151671
120


processing console:

5



7



9

1