1 /*
2  * Copyright (c) 2006-2023, RT-Thread Development Team
3  *
4  * SPDX-License-Identifier: Apache-2.0
5  *
6  * Change Logs:
7  * Date           Author       Notes
8  * 2023-02-08     WangShun     first version
9  */
10 
11 #include <Arduino.h>
12 
setup(void)13 void setup(void)
14  {
15      /* put your setup code here, to run once: */
16     pinMode(LED_BUILTIN, OUTPUT);
17  }
18 
loop(void)19 void loop(void)
20 {
21     /* put your main code here, to run repeatedly: */
22     digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
23     delay(100);
24 }
25