/**
 * Author = Elena Chong
 Date = 11/27/2018
 Serial read from ATTINY45 connected with HC-SR04
 * 
 * Read data from the serial port and change the width of a rectangle.
 */


import processing.serial.*;

Serial myPort;  // Create object from Serial class
int val;      // Data received from the serial port
int rHeight = 100;
int x = 10;
int y = 10;
void setup() 
{
  size(500, 200);
  String portName = Serial.list()[1];
  myPort = new Serial(this, portName, 9600);
}

void draw()
{
  if ( myPort.available() > 0) {  // If data is available,
    val = myPort.read();         // read it and store it in val
  }
  background(255);             // Set background to white
  fill(50);
  rect(x, y, val*10, rHeight);
  println(val);
  delay(100); // matching send delay to read correctly
}