Würfelprogramm

/*
 * RandomDice.cpp
 *
 * Created: 07.10.2015 18:43:43
 * Author : Kim-Yannick
 */

#define F_CPU 10000000UL

#include <avr/io.h>
#include <util/delay.h>
#include <stdlib.h>

char codes[] = {0b01111110, 0b01001000, 0b00111101, 0b01101101, 0b01001011, 0b01100111, 0b01110111};

int main(void)
{
    DDRD = 0xFF;
    DDRC = 0x00;

    PORTD = 1 << 7;
    PORTC = 1;

    int seed = 0;

    while (PINC&1) {
        seed += 1;
        _delay_ms(5);
    }

    srand(seed);

    while (1) {
        unsigned int number = rand();

        PORTD |= 1 << 7;

        while (!PINC&1) {
            number = rand();
            _delay_ms(10);
        }

        PORTD = codes[number%6+1];

        while (PINC&1)
            _delay_ms(10);
    }
}