[AVR]PWM ATmega 644PA

/*
 * main.c
 *
 *  Created on: 30-03-2013
 *              23:09:06
 *      Author: miszczo
 *      16MHz
*/



#include <avr/io.h>
#include <util/delay.h>
#include "LCD/lcd44780.h"



int main(void)
{

    DDRB |= (1<<PB3);            // OC0A jako wyjscie
    TCCR0A |= (1<<COM0A1) | (1<<COM0A1);     // set on compare/clear at bottom
    TCCR0A |= (1<<WGM00) | (1<<WGM01);   // fast pwm TOP 0xff
    TCCR0B |= (1<<CS00);             // prescaler 1

    DDRD &= ~(1<<PD0) | ~(1<<PD1);       //PD0 jako wejscie
    PORTD |= (1<<PD0) | (1<<PD1);

    OCR0A = 127;

    lcd_init();
    lcd_int(OCR0A);




    while(1)
    {

        if(((PIND & (1<<PD0))==0) & (OCR0A<255))
        {
            lcd_cls();
            OCR0A++;
            lcd_int(OCR0A);
            _delay_ms(10);
        }

        if(((PIND & (1<<PD1))==0)&(OCR0A>0))
        {
            lcd_cls();
            OCR0A--;
            lcd_int(OCR0A);
            _delay_ms(10);

        }
    }
}