//set mode of times fast pwm 10 bits mode in register TCCR1A & TCCR1B
// TCCR1B HAS WGM13 IS 0 AND WGM12 IS 1
// TCCR11 HAS WGM11 IS 1 AND WGM10 IS 1
//THEN MODE IS FAST PWM 10 BIT MEANS 1024 STEPS
//SET PWM MODES 
//COM1A1 FROM TCCR1A IS 1 AND /COM1AO FROM TCCR1A IS 0
//THEN
//SET PRESCALLER FREQ IS 250KHZ THEN 64 IS PRESCALLER
//TCCR1B HAS CS12 IS 0 CS11 IS 1 CS10 IS 1 THEN SET 
//PORTB1 PIN IS 1 REGISTER IS OCR1A DUTY CYCLE 0 1024 BECAUSE 10 BIT

// void setup(){
//   TCCR1B &= (~(1<<WGM13));
//   TCCR1B |= (1<<WGM12);
//   TCCR1A |= (1<<WGM11)|(1<<WGM10);

//   TCCR1A |= (1<<COM1A1);
//   TCCR1A &= ~(1<<COM1A0);

//   TCCR1B |= (1<<CS10) | (1<<CS11);
//   TCCR1B &= ~(1<<CS12);

//   DDRB |= (1<<DDB1);
//  Serial.begin(9600);
// }

// void loop(){
//   int i =0;
//  for ( int i = 0 ; i < 1024 ; i++){
//   OCR1A = i;
//   delay(2);
//   Serial.println(i);
//  }
//  delay(2000);
 
//  for ( int i = 1023 ; i >= 0 ; i--){
//   OCR1A = i;
//   delay(2);
//   Serial.println(i);
//   if(i==1){
//      delay(2000);
//   }
//  }

 

// }
void setup(){
  TCCR1B &= (~(1<<WGM13));
  TCCR1B |= (1<<WGM12);
  TCCR1A |= (1<<WGM11)|(1<<WGM10);

  TCCR1A |= (1<<COM1A1);
  TCCR1A &= ~(1<<COM1A0);

  TCCR1B |= (1<<CS10) | (1<<CS11);
  TCCR1B &= ~(1<<CS12);

  DDRB |= (1<<DDB1);
 Serial.begin(9600);
}

void loop(){
  // Fade in effect
  OCR1A = 309; // Set duty cycle
   
}