Variante 4 - Der Purist

#include <avr/io.h>

int main(void)
{
    int x,v,i;
    int grenze = 0;
    unsigned long pause;
    DDRD |= (1<<PB5) | (1<<PB4); //auf Ausgang setzen.            

    grenze=0;
    x=255;
    v=0;
    i=0;
    while(true)
    {
        if(grenze>=x+256)
        {            
            PORTD |= 0b00110000;
            grenze=0;
        }
        else
        {
            PORTD &= 0b11001111;
        }
        if(i>=200)
        {
           x +=  v;
           v += -(x/128); 
           i=0;
        }
        grenze++; 
        i++;
        for(pause=0;pause<5000;pause++);
    }
	return 0;
}

 

Code 0-1: Programmcode