Callback from each individual memory (only 1-wire) when reading of
        header/elements are done

def _mem_update_done(self, mem):
        """
        Callback from each individual memory (only 1-wire) when reading of
        header/elements are done
        """
        if mem.id in self._ow_mems_left_to_update:
            self._ow_mems_left_to_update.remove(mem.id)

        logger.debug(mem)

        if len(self._ow_mems_left_to_update) == 0:
            if self._refresh_callback:
                self._refresh_callback()
                self._refresh_callback = None