#include<inttypes.h>
#include<avr/io.h>
#define F_CPU 1000000UL	//1MHZ, réglage de la fréquence du CPU
#include<util/delay.h>

int main()
{       
        DDRB = 0b111111;	//initialisation de tous les pins PORTB en sortie

        while(1)
        {
          //Séquence 1

		PORTB = 0b010111;	//toutes les LED sont éteintes
		_delay_ms(150);		//attente
		PORTB = 0b010110;	//allumage de la LED0
                _delay_ms(50);		//attente
                PORTB = 0b010100;	//allumage des LED0 + LED1
                _delay_ms(50);		//attente
                PORTB = 0b010000;	//allumage des LED0 + LED1 + LED2
                _delay_ms(50);		//attente
		PORTB = 0b000000;       //allumage des LED0 + LED1 + LED2 + LED3(sur PB4)
		_delay_ms(150);         // ...
		PORTB = 0b010000;
                _delay_ms(50);
                PORTB = 0b010100;
                _delay_ms(50);
                PORTB = 0b010110;
                _delay_ms(50);
		PORTB = 0b010111;
                _delay_ms(150);
                
	//Séquence 2

		PORTB = 0b000111;	
		_delay_ms(50);
		PORTB = 0b000011;
		_delay_ms(50);
		PORTB = 0b000001;
		_delay_ms(50);
		PORTB = 0b000000;
		_delay_ms(150);
		PORTB = 0b000001;
                _delay_ms(50);
                PORTB = 0b000011;
                _delay_ms(50);
                PORTB = 0b000111;
                _delay_ms(50);
		PORTB = 0b010111;
		_delay_ms(150);

	//Séquence 3

		PORTB = 0b010110;
                _delay_ms(50);
                PORTB = 0b010101;
                _delay_ms(50);
                PORTB = 0b010011;
                _delay_ms(50);
		PORTB = 0b000111;
		_delay_ms(50);
		PORTB = 0b010111;
		_delay_ms(150);
		PORTB = 0b000111;
                _delay_ms(50);
                PORTB = 0b010011;
                _delay_ms(50);
                PORTB = 0b010101;
                _delay_ms(50);
		PORTB = 0b010110;
		_delay_ms(50);
		PORTB = 0b010111;
                _delay_ms(150);

	//Séquence 4

		PORTB = 0b000000;
		_delay_ms(50);
                PORTB = 0b000001;
                _delay_ms(50);
                PORTB = 0b000010;
                _delay_ms(50);
		PORTB = 0b000100;
		_delay_ms(50);
		PORTB = 0b010000;
		_delay_ms(50);
		PORTB = 0b000000;
		_delay_ms(150);
		PORTB = 0b010000;
                _delay_ms(50);
                PORTB = 0b000100;
                _delay_ms(50);
		PORTB = 0b000010;
		_delay_ms(50);
		PORTB = 0b000001;
		_delay_ms(50);
		PORTB = 0b000000;
		_delay_ms(150);
	}      
return 0;
}