import processing.serial.*;//importig serial port
Serial portCom3; //making object of serial port com3

PImage img; //variable for loading image
int prevhoriz=1;//variable to set previous horizontal position
int preh=0;//variable to setprevious height
int horiz = 1; //varialbe to set horizontal position of graph
void setup () // setup function which runs once during program execution

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size(800, 600); //size for console/window

println(Serial.list());//printing all the available ports

portCom3 = new Serial(this, Serial.list()0, 9600); //using dynamic memory allocation use serial at position zero of array which is com3
img=loadImage(“red.png”);//loading image for background
// A serialEvent() is generated when a newline character is received :
‘);//before calling serial set some specific data buffer
background(0); //for background colour}
void draw () {

void serialEvent (Serial portCom3)//serial event function for gettig the data from com3

String istring = portCom3.readStringUntil(‘
‘);// read the string from com3 using ascii values
if (istring != null) {
istring = trim(istring); //function for trimming white spaces
float bytstring = float(istring); // casting for cinverting into floating no.

bytstring = map(bytstring, 0, 1023, 0, height); //map the range of data come from serialport according to window size

stroke(127,34,255); //stroke function for setting the colour of graph line
strokeWeight(4); //strokeweight function for setting the thickness of line
line(prevhoriz, preh, horiz, height – bytstring); //drawing line according to given data
prevhoriz= horiz;//updating the value of previous horizontal position
preh= int(height-bytstring);//setting the height of graph
prevhoriz= 0;
horiz = 0;
else {
horiz++;// continue to incrememt horizontal position for motion of graph


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