RT-Thread-【NUC980IOT试用】GPIO测评RT-Thread问答社区

【NUC980IOT试用】GPIO测评

发布于 2022-03-20 17:25:17 浏览：904 订阅该版

时间：2022.3.20
作者：lianghai
**1.测试环境**
RT-Thread Studio 2.2.1 
JLINK V10   
PuTTY

**2.测试任务**
本次任务为基于RT-Thread Studio开发环境对新唐 NUC980IOT GPIO测试

**3.资源介绍**
![image.png](https://oss-club.rt-thread.org/uploads/20220320/e80e5ead3e7898f554d2871d60b6a1ba.png.webp)

![image.png](https://oss-club.rt-thread.org/uploads/20220320/81ec7050651cd626b2c7102bb4b825b9.png.webp)

**4.建立工程**
4.1 下载安装RT-Thread Studio，此部分的更多教程可以参考RT-Thread官网的引导教程
[RT-Thread Studio教程](https://www.rt-thread.org/document/site/#/development-tools/rtthread-studio/um/studio-user-begin)
[RT-Thread Studio下载地址](https://www.rt-thread.org/page/studio.html)
4.2 RT-Thread Studio提供了丰富的芯片及开发板项目模板，这里基于NK-980IOT开发板新建项目
![image.png](https://oss-club.rt-thread.org/uploads/20220320/7638608de8da6ae10d1405bcb5f491a2.png.webp)
[image.png](https://oss-club.rt-thread.org/uploads/20220320/d802c695cfef136b10bc6c0ecdbf8c00.png)

**5.程序源码**
双击左侧RT-Thread Settings打开项目配置
![image.png](https://oss-club.rt-thread.org/uploads/20220320/d2b570debdb1612ff3b5f12584d27a32.png.webp)
这里可以根据自己需要添加或修改项目配置
![image.png](https://oss-club.rt-thread.org/uploads/20220320/ae38e7b4fa948d4787cfb60e52b569b0.png.webp)
鼠标放上去还可以查看相应的配置项、API手册等
![image.png](https://oss-club.rt-thread.org/uploads/20220320/edaa15aa04dcf02905a504b21e14bffa.png)
点击右侧箭头打开详细页面，搜索GPIO，发现默认已经为我们开启了GPIO
![image.png](https://oss-club.rt-thread.org/uploads/20220320/fd84832d198497261e7a680ca0d00d2c.png.webp)

双击左侧application下的main.c文件，工程模板已经为我们设计了LED点灯程序，这里我们删掉main函数相关代码，后续自行编写GPIO_led文件，添加头文件，删改后的main.c文件代码如下：
```
/**************************************************************************//**
*
* @copyright (C) 2019 Nuvoton Technology Corp. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date            Author       Notes
* 2020-12-12      Wayne        First version
*
******************************************************************************/

#include <rtconfig.h>
#include <rtdevice.h>

#define LOG_TAG              "main"
#define LOG_LVL              LOG_LVL_DBG
#include <ulog.h>

#if defined(RT_USING_PIN)
#include <drv_gpio.h>
#include "GPIO_led.h"

#endif

int main(int argc, char **argv)
{
    return 0;
}

```
右键点击左侧application新建GPIO_led c文件和头文件，这里设计将一个led_entry线程，并将led命令添加到控制台命令。RT-Thread代码部分可以参考官方提供的API接口说明，在RT-Thread Studio顶部菜单栏可以快捷打开
![image.png](https://oss-club.rt-thread.org/uploads/20220320/0ae870b890139dde02b62b70eb76e16b.png)

```
/*
 * Copyright (c) 2006-2021, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2022-03-17     31248       the first version
 */
#include <rtconfig.h>
#include <rtdevice.h>

#include "GPIO_led.h"
#include "drv_gpio.h"

#define LOG_TAG              "gpio_led"
#define LOG_LVL              LOG_LVL_DBG
#include <ulog.h>

#define LED_Y NU_GET_PININDEX(NU_PB, 8)
#define LED_R NU_GET_PININDEX(NU_PB, 13)

void led_entry(void *parameter)
{
    /* 设置PIN脚模式为输出 */
    rt_pin_mode(LED_Y, PIN_MODE_OUTPUT);
    rt_pin_mode(LED_R, PIN_MODE_OUTPUT);

while (1)
    {
        rt_pin_write(LED_Y, PIN_LOW);
        rt_pin_write(LED_R, PIN_HIGH);
        rt_thread_mdelay(1000);

rt_pin_write(LED_Y, PIN_HIGH);
        rt_pin_write(LED_R, PIN_LOW);
        rt_thread_mdelay(1000);

}
}

int led()
{
    LOG_D("led_init start");
    rt_thread_t tid;
    rt_err_t ret = RT_EOK;

tid = rt_thread_create("led",
                           led_entry,
                           RT_NULL,
                           512,
                           RT_THREAD_PRIORITY_MAX / 3,
                           20);
    if (tid != RT_NULL)
    {
        rt_thread_startup(tid);
    }
    else
    {
        ret = RT_ERROR;
    }

return ret;
}

MSH_CMD_EXPORT(led,led blink);

```
```
/*
 * Copyright (c) 2006-2021, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2022-03-17                the first version
 */
#ifndef APPLICATIONS_GPIO_LED_H_
#define APPLICATIONS_GPIO_LED_H_

void led_entry(void *parameter);
int led();

#endif /* APPLICATIONS_GPIO_LED_H_ */

```

点击菜单栏构建debug
![image.png](https://oss-club.rt-thread.org/uploads/20220320/235dc231ac83b4e944aec8e4c4ce8809.png.webp)

**6.调试下载**
Jlink与开发板CON3口通过JTAG模式一一连接，连接关系如下图
![image.png](https://oss-club.rt-thread.org/uploads/20220320/ea3fbe7367009ee23b21f360d7d7b888.png.webp)
![image.png](https://oss-club.rt-thread.org/uploads/20220320/f1d8f993302fe1123be81b718d18eec7.png.webp)
![image.png](https://oss-club.rt-thread.org/uploads/20220320/e34fe4f27d194442fbe03c1fd3ce40c3.png.webp)
使用USB线连接开发板VCOM口，打开Putty,连接电脑对应COM口，波特率115200
![image.png](https://oss-club.rt-thread.org/uploads/20220320/0f9b8bcffdbf9917a6b671907dd0de8c.png)
点击菜单栏启动调试
![image.png](https://oss-club.rt-thread.org/uploads/20220320/e5095b4f679fa8315406ab8f81a23f0f.png)
点击菜单栏启动运行
![image.png](https://oss-club.rt-thread.org/uploads/20220320/c03d060de22acf49517039bd49431e76.png)
这个时候已经显示启动信息了
![image.png](https://oss-club.rt-thread.org/uploads/20220320/317482d0f090a885bf86e1860d380889.png)
RT-Thread设计了类似于Linux的命令行界面，我们可以通过help命令查询支持的操作命令，包括版本、内存堆栈、以太网、线程、虚拟文件系统等等丰富资源
![image.png](https://oss-club.rt-thread.org/uploads/20220320/876353443e407f25bea15a6e5c17a830.png)
可以看到最下面有我们GPIO_led新增的led命令
![image.png](https://oss-club.rt-thread.org/uploads/20220320/0509fdbc600dc940430f3765f077057a.png.webp)
命令行输入led，可以观察到led灯循环闪烁
![image.png](https://oss-club.rt-thread.org/uploads/20220320/e7f7b9a550cc285ad30b7f02e8bf7d35.jpg.webp)

**7.心得**
这是第一次使用RT-Thread Studio这款IDE，创建RT-Thread项目非常方便，提供了一站式配置项目，只需要根据需要添加删除组件，使得项目开发非常迅速，支持的主流芯片很丰富，NUC980IOT上手也很简单，开发过程查阅技术手册，调用RT-Thread的API，基本上就能满足需求