squeezizi

//q1
//q2

void setup()
{
	Serial.begin(9600);
	init_clavier(); 
}

void init_clavier()
{

	DDRD |= B11100; 
	DDRB &= ~B1111; 
	PORTB |= B1111; 
}


bool etat_touche_1()
{
	PORTD |= B11100; 
	PORTD &= ~(1<<4); 
			

	return not ( PINB & (1<<3) ); 
						
}


/*
const byte ROWS = 4; //4 colonnes
const byte COLS = 3; //3 colonnes
const byte rowPins[ROWS] = {11,10,9,8};//entrées PORTB
const byte colPins[COLS] = {4,3,2}; //sorties PORTDă
const char keys[ROWS][COLS] = {
{'1','2','3'},
{'4','5','6'},
{'7','8','9'},
{'*','0','#'}
};

void setup() {
Serial.begin(9600);
}*/
void loop() {
  if (etat_touche_1()) 
    Serial.print("Le 1 est pressé \n");

 }