optimize LWIP demo and OPCua demo

APP_Framework/Framework/control/plc/interoperability/opcua/ua_api.h

@@ -0,0 +1,25 @@
+/*
+* Copyright (c) 2021 AIIT XUOS Lab
+* XiUOS is licensed under Mulan PSL v2.
+* You can use this software according to the terms and conditions of the Mulan PSL v2.
+* You may obtain a copy of Mulan PSL v2 at:
+*        http://license.coscl.org.cn/MulanPSL2
+* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+* See the Mulan PSL v2 for more details.
+*/
+#ifndef __UA_API_H__
+#define __UA_API_H__
+
+#include "open62541.h"
+
+#define OPC_SERVER "opc.tcp://192.168.250.5:4840"
+#define ua_print printf
+
+int ua_server_connect(void);
+int ua_get_server_info(UA_Client *client);
+void ua_read_time(UA_Client *client);
+int16 ua_test(void);
+
+#endif