def get_from_hub(self, sid):
        """Get data from gateway"""
        cmd = '{ "cmd":"read","sid":"' + sid + '"}'
        resp = self._send_cmd(cmd, "read_ack") if int(self.proto[0:1]) == 1 else self._send_cmd(cmd, "read_rsp")
        _LOGGER.debug("read_ack << %s", resp)
        return self.push_data(resp)
Get data from gateway