// Prototypes des fonctions de gestion du LCD en mode 4 bits

void init_port_lcd (void);
void lcd_car (unsigned char car);
void lcd_com (unsigned char commande);
void lcd_com_init (unsigned char commande);
void init_lcd (void);
void lcd_str (unsigned char *str);

// Prototypes des fonctions de gestion du timer

void tpo_ms (unsigned short tmr_val);
void tpo_us (unsigned short tmr_val);

