// #define BUTTON_INPUT  4  // Pin connected to the push button
// #define LED_OUTPUT  13    // Pin connected to the LED
 
// unsigned char buttonState = 0;      // Variable to store the button state
// unsigned char lastButtonState = 0;  // Variable to store the last button state
// unsigned char led_Output = LOW;       // Variable to store the LED state
// unsigned char counterfor100ms=0;   //COUNTER FOR 10MS  
// unsigned char PushSwitchDebCount=0; /*debounce counter for input switch*/
// unsigned char counterfor10ms;
// unsigned char currentValuePush;
// unsigned char prv_Value_push;
// unsigned char push_count;
// unsigned char push_count2;
// unsigned char ledFlag;
// unsigned char count_off_Flag;
// unsigned char count_on_Flag;

// void LED_State_Init(void);
// void LED_Manager(void);
// void Task_10ms(void);
// void Task_100ms(void);
 

 

// // enum State_LED
// // {
// //   LED_STATE_OFF,
// //   LED_STATE_DEBOUNCE,
// //   LED_STATE_ON
// // } ;
// // static State_LED LED_Current_State;
// // static State_LED LED_Previous_State;
 
// /* Do not modify*/
// ISR(TIMER1_COMPA_vect)   // ISR
// {
//   TCNT1=0;
//   counterfor10ms++;
//   counterfor100ms++;
// }
// /* Do not modify*/
// void timer_init()        //TIMER INITIALIZATION
// {
//   cli();
//   TCCR1A=0;
//   TCCR1B=0;
//   TCCR1B|=B00000100;  //PSC=256
//   TIMSK1|=B00000010;  // INITIALLY SETTING TIM A,B BITS=0
//   OCR1A=625;  /* 625 - 10ms, 62 - 1ms*/
//   sei();  
// }
// /* Do not modify*/
// void digitalpin_init()    // digital pins
// {
//    pinMode(LED_OUTPUT, OUTPUT);
//    pinMode(BUTTON_INPUT, INPUT);
 
// }
// /* Do not modify*/
// void setup() /* This function will execute only 1 time*/
// {  
//   timer_init();
//   digitalpin_init();
//   LED_State_Init();
//   Serial.begin(9600);
// }
// /* Do not modify*/
// void loop()
// {
//   // put your main code here, to run repeatedly:
//   Task_10ms();
//   Task_100ms();
// }
 
// void Task_10ms(void)
// {
//   if(counterfor10ms==1) /* enters for every 10ms*/
//   {
//     /*task_pushbutton();*/
//     LED_Manager();
//     counterfor10ms=0;
//   }
 
// }
 
 
// void Task_100ms(void)
// {
// }
 
 
// /* Start to write your logic from here*/

// /* Led state machine init function*/
// void LED_State_Init(void)
// {
//   // led_Output = LOW;
//   // digitalWrite(LED_OUTPUT, led_Output);
//   push_count=0;
//   push_count2=0;
//   ledFlag=HIGH;
//   // LED_Current_State = LED_STATE_OFF;
//   //currentValuePush=LOW;
//   prv_Value_push=0;
// }
 
// /* State machine function for LED_STATE Manager. Executes every 10ms*/
// void LED_Manager(void)
// {
//   buttonState = digitalRead(BUTTON_INPUT);
  
//   //Serial.println(buttonState);
//   currentValuePush=buttonState;
      

//    if (ledFlag==HIGH && currentValuePush==1)
//    {     
      
//        if( push_count2==1)
//        {
//         Serial.println("bro");
//         push_count2=0;
//         ledFlag=LOW;
//        // Serial.println("i am in low");
//        }    
//        else if(ledFlag==HIGH &&  push_count<4)
//         {
//          Serial.println("hello");
//             push_count++;
//           } 
//         else 
//         {  
//          // push_count2++;
//             ledFlag=LOW;
//            //  Serial.println(ledFlag);
//             push_count=0;
//              digitalWrite(LED_OUTPUT, HIGH);
             
            
//         }
      
//       }
//     else if( ledFlag==LOW &&  currentValuePush==1 )
//     {      Serial.println(" i am in low");
      
//         if( push_count2==1 )
//        {
//         push_count2=0;
//         ledFlag=HIGH;
//         Serial.println("i am in low");
//        } 
        
//        else if(ledFlag==LOW &&  push_count<4)
//           {
            
//                 push_count++;
//                //  Serial.println(ledFlag);

//               }
//         else 
//         {    
//            push_count2++;
//               Serial.println(" i am in low");
//               ledFlag=HIGH;
//               push_count=0;
              
//               digitalWrite(LED_OUTPUT,LOW);
//                 }
             
//         }
        
        
//     }

    
//     //Serial.println(PushSwitchDebCount);
//       // if(currentValuePush!=prv_Value_push)
//       // {
        
//       //   if(PushSwitchDebCount++>4) /* this will check the debouncing */
//       //     {
            
//       //       Serial.println(push_count);
//       //       PushSwitchDebCount=0;
//       //      // Serial.println(PushSwitchDebCount);
//       //       if(HIGH==currentValuePush && push_count%2==0)
//       //         {   
//       //             digitalWrite(LED_OUTPUT, HIGH); /* led high */
//       //             push_count=push_count+1;
                 
//       //         }
//       //        else if(HIGH==currentValuePush && push_count%2!=0)
//       //         {
//       //           digitalWrite(LED_OUTPUT, LOW);/* led low */
//       //           push_count=push_count+1;
                
//       //         }
//       //        prv_Value_push=currentValuePush; /* it will store the current value in prv */ 
//       //     }
//       // }
//       // //prv_Value_push=currentValuePush; /* it will store the current value in prv */          

#define LED_OUTPUT 13
#define BUTTON_INPUT 4
 
static unsigned int LED_STATE_OFF=0;
static unsigned int LED_STATE_ON=1;
static unsigned char buttonState = 0;  
static unsigned int cur_ButtonState = 0;     // Variable to store the button state
static unsigned int lastButtonState = 0;  // Variable to store the last button state
static unsigned char led_Output = LOW;       // Variable to store the LED state  //COUNTER FOR 10MS  
static unsigned int button_count=0;/*debounce counter for input switch*/
static unsigned int counterfor10ms=0;
static unsigned int counterfor100ms=0;
static unsigned int debounce_count=1;
static unsigned char  LED_Current_State=0;
 
 
static void Task_10ms(void);
static void LED_on(void);
static void LED_off(void);
static void LED_debounce(void);
static void task_manager(void);
void timer_init();
//static void Task_100ms(void);
 
ISR(TIMER1_COMPA_vect)   // ISR
{
  TCNT1=0;
  counterfor10ms++;
  //counterfor100ms++;
}
 
void timer_init()        //TIMER INITIALIZATION
{
  cli();
  TCCR1A=0;
  TCCR1B=0;
  TCCR1B|=B00000100;  //PSC=256
  TIMSK1|=B00000010;  // INITIALLY SETTING TIM A,B BITS=0
  OCR1A=62;  /* 625 - 10ms, 62 - 1ms*/
  sei();  
}
 
void setup() /* This function will execute only 1 time*/
{  
  timer_init();
 pin_init();
 LED_State_Init();
}
/* Do not modify*/
void loop()
{
  // put your main code here, to run repeatedly:
  task_manager();
 
}
 
static void task_manager(void)
{
  if(counterfor10ms>=1)
  {
    Task_10ms();
   counterfor10ms=0;
 
  }
}
 
static void pin_init()    // digital pins
{
   pinMode(LED_OUTPUT, OUTPUT);
   pinMode(BUTTON_INPUT, INPUT);
 
}
 
static void Task_10ms()
{
  Read_button();
   LED_state_manager();
}
 
 
 
static void Read_button(void)
{
   buttonState = digitalRead(BUTTON_INPUT);
   cur_ButtonState=buttonState;
   Serial.println(cur_ButtonState);
}
 
static void LED_State_Init(void)
{
  led_Output = LOW;
  LED_Current_State =0;
 
}
 
 
 
static void LED_state_manager(void)
{
 LED_debounce();
}
 
 
 
static void LED_debounce(void)
{
 
  if(cur_ButtonState==1)
  {
    if( LED_Current_State ==0)
    {
       
      if( debounce_count<4)
      {
        debounce_count++;
      }
 
      else{
 
        digitalWrite(LED_OUTPUT,HIGH);
        debounce_count=0;
         led_Output=HIGH;
      }
      //LED_Current_State=1;
     
    }
 
    if( LED_Current_State ==1)
    {
     
      if( debounce_count<4)
      {
        debounce_count++;
      }
 
      else{
 
        digitalWrite(LED_OUTPUT,LOW);
        debounce_count=0;
         led_Output=LOW;
      }
     // LED_Current_State=0;  
    }
 
  }
  else{
    if(led_Output==HIGH)
    {
     LED_Current_State=1;
    }
    if(led_Output==LOW)
    {
     LED_Current_State=0;
    }
  }
}