+int mw_advance_watch_hands(mwdevice_t *mwdevice, unsigned char hours, unsigned char minutes, unsigned char seconds);
+
+int mw_battery_configuration(mwdevice_t *mwdevice, unsigned char warn_lvl, unsigned char bt_off_lvl);
+
+int mw_decode_frame(mwdevice_t *mwdevice, unsigned char *buf, int len);
+
+int mw_feed_msg_buffer(mwdevice_t *mwdevice, unsigned char *buf, int len);