/*
    ARDUINO BUTTON TOGGLES LED
    By: TheGeekPub.com
    More Arduino Tutorials: https://www.thegeekpub.com/arduino-tutorials/
*/
 
// constants won't change
const int BUTTON_PIN = 6;  // Connect the Button to pin 7 or change here
const int LED_PIN    = 10;       // Connect the LED to pin 3 or change here
  
// variables will change:
int var = 0;
int ledState = LOW;        // tracks the current state of LED
int lastButtonState;        // the previous state of button
int currentButtonState; // the current state of button
  
void setup() {
  Serial.begin(9600);                         // initialize serial
  pinMode(BUTTON_PIN, INPUT);  // set arduino pin to input mode
  pinMode(LED_PIN, OUTPUT);      // set arduino pin to output mode
  
  currentButtonState = digitalRead(BUTTON_PIN);
}
  
void loop() {
  lastButtonState    = currentButtonState;                // save the last state
  currentButtonState = digitalRead(BUTTON_PIN); // read new state
  delay(50);
  if(lastButtonState == HIGH && currentButtonState == LOW) {
    Serial.print("The button is pressed: ");
  // toggle state of LED
  var += 1;
  Serial.println( var);
  if (var == 3)  { var = 0; Serial.println("END"); }
 /*   if(ledState == LOW) {
       ledState = HIGH;  
       Serial.println("Turning LED on");
    }
    else {
      ledState = LOW;
      Serial.println("Turning LED off");
    }
    // control LED arccoding to the toggled state
    digitalWrite(LED_PIN, ledState);  //turns the LED on or off based on the variable  */
  }
  
}