import processing.serial.*;
Serial thisPort; // Create object from Serial class
int xPos = 0; // starting position for graphing
void setup()
{
size(800,700); //make our canvas 800 x 700 pixels
println(Serial.list()); //show available ports
thisPort = new Serial(this, Serial.list()[0], 9600);
thisPort.bufferUntil('\n'); //set the port to store incoming data
background(0); //set background color for the window
}
void draw()
{
stroke(127,34,255); //set stroke color
line(xPos, height, xPos, height - inByte); //draw a line
if (xPos >= width)
{ //if the screen has filled with the graph
xPos = 0; //reset position in X to 0
background(0); //reset background
}
else
{ //otherwise
xPos++; //advance one pixel to draw next line
}
}
void serialEvent(Serial thisPort)
{
String inString = thisPort.readStringUntil('\n'); // store data read from serial
//in a String type variable
if (inString != null)
{ //if there is information read from serial
inString = trim(inString); //removes whitespace characters fro
//the beginning and end of a String
inByte = float(inString); //convert serial data to a flat type number
println(inByte); //show value
inByte = map(inByte, 0, 40, 0, height); //re-maps a number from one range to another
}
}