PWM

#define F_CPU 1000000UL
#include <avr/io.h>
#include <util/delay.h>
#include <avr/interrupt.h>

int main(void)
{
    //Timer Counter 0 PIN 0 und 1
    TCCR0A = (1<<WGM00) | (1<<COM0A1)| (1<<WGM01) | (1<<COM0B1) ; //PWM-Mode
    TCCR0B = (1<<CS00); //Prescaler

    //Timer Counter 0 PIN 4
    TCCR1 = (1<<CS10) | (1<< COM1A0) | (1<< PWM1A);

    sei();
    DDRB = (1<<0) | (1<<1) | (1<<4);


    while (1)
    {
        OCR1B =255;



        for (int i = 0; i < 255; i++)
        {
        OCR0A = i;
        _delay_ms(5);
        }
        for (int i = 255; i > 0; i--)
        {
            OCR0A = i;
            _delay_ms(5);
        }


        for (int i = 0; i < 255; i++)
        {
            OCR0B = i;
            _delay_ms(5);
        }
        for (int i = 255; i > 0; i--)
        {
            OCR0B = i;
            _delay_ms(5);
        }
    }
}