#include <avr/io.h>
#include <inttypes.h>
#include <util/delay.h>

#define F_CPU 8000000UL		/*  am using internal 8MHz crystal oscillator */

#define LED_PORT PORTB			/* PORTx - register for LED output */

#define LED_DDR DDRB			/* LED data direction register */

#define BLINK_TIME 100			/* time to wait after a led change state */
#define BLINK_TIMEE 1000			/* time to wait after a led change state */
#define BLINK_TIMEEE 500			/* time to wait after a led change state */

int main(void)
{
  LED_DDR |= (1 << LED_BIT);         // set LED pin as output

  while(1) {                         
      LED_PORT |= (1 << LED_BIT);    // turn LED on
      _delay_ms(BLINK_TIME);         // wait BLINK_TIME milliseconds

      LED_PORT &= ~(1 << LED_BIT);   // turn LED off
      _delay_ms(BLINK_TIME);         // wait BLINK_TIME milliseconds
      LED_PORT |= (1 << LED_BIT);    // turn LED on
      _delay_ms(BLINK_TIMEE);         // wait BLINK_TIME milliseconds

      LED_PORT &= ~(1 << LED_BIT);   // turn LED off
      _delay_ms(BLINK_TIMEE);         // wait BLINK_TIME milliseconds
      LED_PORT |= (1 << LED_BIT);    // turn LED on
      _delay_ms(BLINK_TIMEEE);         // wait BLINK_TIME milliseconds

      LED_PORT &= ~(1 << LED_BIT);   // turn LED off
      _delay_ms(BLINK_TIMEEE);         // wait BLINK_TIME milliseconds
  }                                      // The led is going to brick according to the above sequence
}

 
const int buttonPin = A3;    // the number of the pushbutton pin
const int ledPin = A1;      // the number of the LED pin

// Variables will change:
int ledState = HIGH;         // the current state of the output pin
int buttonState;             // the current reading from the input pin
int lastButtonState = LOW;   // the previous reading from the input pin

// the following variables are unsigned long's because the time, measured in miliseconds,
// will quickly become a bigger number than can be stored in an int.
unsigned long lastDebounceTime = 0;  // the last time the output pin was toggled
unsigned long debounceDelay = 50;    // the debounce time; increase if the output flickers

void setup() {
  pinMode(buttonPin, INPUT);
  pinMode(ledPin, OUTPUT);

  // set initial LED state
  digitalWrite(ledPin, ledState);
}

void loop() {
  // read the state of the switch into a local variable:
  int reading = digitalRead(buttonPin);

  // check to see if you just pressed the button
  // (i.e. the input went from LOW to HIGH),  and you've waited
  // long enough since the last press to ignore any noise:

  // If the switch changed, due to noise or pressing:
  if (reading != lastButtonState) {
    // reset the debouncing timer
    lastDebounceTime = millis();
  }

  if ((millis() - lastDebounceTime) > debounceDelay) {
    // whatever the reading is at, it's been there for longer
    // than the debounce delay, so take it as the actual current state:

    // if the button state has changed:
    if (reading != buttonState) {
      buttonState = reading;

      // only toggle the LED if the new button state is HIGH
      if (buttonState == HIGH) {
        ledState = !ledState;
      }
    }
  }

  // set the LED:
  digitalWrite(ledPin, ledState);

  // save the reading.  Next time through the loop,
  // it'll be the lastButtonState:
  lastButtonState = reading;
}
 

const int buttonPin = A2;    
const int ledPin =  A1;     
int ledState = LOW;
boolean buttonState = LOW; 

int pressed=0;

void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin, INPUT);
}

void loop() {
  
  if(debounceButton(buttonState) == HIGH && buttonState == LOW)
  {
    pressed++;
    buttonState = HIGH;
  }
  else if(debounceButton(buttonState) == LOW && buttonState == HIGH)
  {
       buttonState = LOW;
  }
   if(pressed == 10)
  {
    digitalWrite(ledPin,HIGH);
  }
}

boolean debounceButton(boolean state)
{
  boolean stateNow = digitalRead(buttonPin);
  if(state!=stateNow)
  {
    delay(10);
    stateNow = digitalRead(buttonPin);
  }
  return stateNow;
  
}