const int PWM_Pin =3;
const int DIR_pin =5;
const int Dutty_Cycle_percent = 50;
const long Frequency_hz = 7800;

void setup()
{
	pinMode(PWM_Pin,OUTPUT);
	pinMode(DIR_pin,OUTPUT);
	digitalWrite(DIR_pin,HIGH);

	TCCR2A=0;	//timer2
	TCCR2B=0;
	
	TCCR2A |= _BV(WGM21) | _BV(WGM20);
	
	TCCR2A |=  _BV(COM2B1);
	TCCR2B |= _BV(CS21);
	
	
	uint8_t dutyValue = (255* Dutty_Cycle_percent)/100;
	OCR2B =dutyValue;
}

void loop()
{
}