ao_enable_input(AO_RN_CONNECTED_PORT, AO_RN_CONNECTED_PIN, AO_EXTI_MODE_PULL_NONE);
ao_exti_setup(AO_RN_CONNECTED_PORT, AO_RN_CONNECTED_PIN,
ao_enable_input(AO_RN_CONNECTED_PORT, AO_RN_CONNECTED_PIN, AO_EXTI_MODE_PULL_NONE);
ao_exti_setup(AO_RN_CONNECTED_PORT, AO_RN_CONNECTED_PIN,