Processing arduino slave from raspberry pi

Processing for Pi
4

Thanks,
but The Rx light only “lits” up and the Servo works, perfectly when , running “Proessing software” from Pc (Arduino Connected to the Pc), but when i try to Do the Same thing From a Raspberry pi, (this time arduino connected to the Radpberry pi , and “Processing software” running in the raspberry pi) , the Rx light dont Glow.

heres the code

//Processing code:
import processing.serial.*;       

int xpos=90; // set x servo's value to mid point (0-180);
int ypos=90; // and the same here
Serial port; // The serial port we will be using

void setup()
{
  size(360, 360);
  frameRate(100);
  println(Serial.list()); // List COM-ports
  //select second com-port from the list (COM3 for my device)
  // You will want to change the [1] to select the correct device
  // Remember the list starts at [0] for the first option.
  port = new Serial(this, Serial.list()[0], 19200);
}

void draw()
{
  fill(175);
  rect(0,0,360,360);
  fill(255,0,0); //rgb value so RED
  rect(180, 175, mouseX-180, 10); //xpos, ypos, width, height
  fill(0,255,0); // and GREEN
  rect(175, 180, 10, mouseY-180);
  update(mouseX, mouseY);
}

void update(int x, int y)
{
  //Calculate servo postion from mouseX
  xpos= x/2;
  ypos = y/2;
  //Output the servo position ( from 0 to 180)
  port.write(xpos+"x");
  port.write(ypos+"y");
}

Heres the Output picture:

forum
forum1920×1080 153 KB

For your Concern, im trying something like , from the video:
https://www.youtube.com/watch?v=xrv2ldwO38U

BUT , Instead of Windows , Im Trying it from Raspberry PI.

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