int _bt_disconnect_le_device(bluetooth_device_address_t *address,
int client_id);
+int _bt_gatt_watch_characteristic(bluetooth_gatt_client_char_prop_info_t *chr,
+ int client_id, gboolean is_notify);
int _bt_gatt_watch_service_changed_indication(const char *sender,
bluetooth_device_address_t *address,