#define AO_EXTI_PRIORITY_LOW 16
#define AO_EXTI_PRIORITY_MED 0
#define AO_EXTI_PRIORITY_HIGH 32
+#define AO_EXTI_PIN_NOCONFIGURE 64
void
ao_exti_setup(struct stm_gpio *gpio, uint8_t pin, uint8_t mode, void (*callback)());
+void
+ao_exti_set_mode(struct stm_gpio *gpio, uint8_t pin, uint8_t mode);
+
void
ao_exti_set_callback(struct stm_gpio *gpio, uint8_t pin, void (*callback)());