#define AO_EXTI_PIN_NOCONFIGURE 64
void
-ao_exti_setup(uint8_t gpio, uint8_t pin, uint8_t mode, void (*callback)());
+ao_exti_setup(uint8_t gpio, uint8_t pin, uint8_t mode, void (*callback)(void));
void
ao_exti_set_mode(uint8_t gpio, uint8_t pin, uint8_t mode);
void
-ao_exti_set_callback(uint8_t gpio, uint8_t pin, void (*callback)());
+ao_exti_set_callback(uint8_t gpio, uint8_t pin, void (*callback)(void));
void
ao_exti_enable(uint8_t gpio, uint8_t pin);