【Nucleo】STM32H743ZI - RT-Thread 最小系统

发布于 2021-01-24 23:34:38 浏览：1092 订阅该版

[tocm]

[RT-Thread 入门学习笔记 - 目录](https://club.rt-thread.org/ask/article/3420.html)

[【Nucleo】STM32H743ZI - 入手篇](https://club.rt-thread.org/ask/article/2508.html)

[【Nucleo】STM32H743ZI - RT-Thread 最小系统](https://club.rt-thread.org/ask/article/2514.html)

[【ART-PI】STM32H750XBH6 系列 ](https://club.rt-thread.org/ask/article/2462.html)

## 背景

* 目标为进一步研究RT-Thread，掌握系统移植的基本方法

* RT-Thread 最新代码BSP里，已经有STM32H743的BSP了。

## 操作方法

* 为了工程的简练，重构RT-Thread 工程

![2021-01-24_225916.png](https://oss-club.rt-thread.org/uploads/20210124/de51e459c01733fde653e62a043e0171.png)

![2021-01-24_230050.png](https://oss-club.rt-thread.org/uploads/20210124/ec89899ded765eac6978ba5d79c793d3.png)

![2021-01-24_230634.png](https://oss-club.rt-thread.org/uploads/20210124/553355076b2ace187bad3e1e167ae988.png)

![2021-01-24_230804.png](https://oss-club.rt-thread.org/uploads/20210124/8522cbf8ec78da8961a0a78255fbdf23.png)

* 解决重构路径引起的问题：

![2021-01-24_231054.png](https://oss-club.rt-thread.org/uploads/20210124/206baf3fa96890a4dcbaabe13d916e57.png)

![2021-01-24_231221.png](https://oss-club.rt-thread.org/uploads/20210124/f767499f68b9c505f9bac5988bd21978.png)

* 编译

![2021-01-24_231342.png](https://oss-club.rt-thread.org/uploads/20210124/30a6cae3044145d310b29bfb650e1907.png)

![2021-01-24_231434.png](https://oss-club.rt-thread.org/uploads/20210124/f719a064f65f9cbfed8273d8043737c7.png)

## 运行

* 这里LED等的引脚，需要跟实际原理图对应上

| LED        | 引脚 | RT-Thread Pin 编号 |
| ---------- | ---- | ------------------ |
| LED_R 红色 | PB14 | GET_PIN(B, 14)     |
| LED_G 绿色 | PB0  | GET_PIN(B, 0)      |
| LED_Y 黄色 | PE1  | GET_PIN(E, 1)      |

```c
#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>

/* defined the LEDR LEDG LEDY pins */
#define LEDR_PIN    GET_PIN(B, 14)
#define LEDG_PIN    GET_PIN(B, 0)
#define LEDY_PIN    GET_PIN(E, 1)

int main(void)
{
    int count = 1;

/* set LEDS pin mode to output */
    rt_pin_mode(LEDR_PIN, PIN_MODE_OUTPUT);
    rt_pin_mode(LEDG_PIN, PIN_MODE_OUTPUT);
    rt_pin_mode(LEDY_PIN, PIN_MODE_OUTPUT);

rt_kprintf("hello, STM32H743 RT-Thread!\r\n");

while (count++)
    {
        rt_pin_write(LEDR_PIN, PIN_HIGH);
        rt_pin_write(LEDG_PIN, PIN_HIGH);
        rt_pin_write(LEDY_PIN, PIN_HIGH);
        rt_thread_mdelay(500);
        rt_pin_write(LEDR_PIN, PIN_LOW);
        rt_pin_write(LEDG_PIN, PIN_LOW);
        rt_pin_write(LEDY_PIN, PIN_LOW);
        rt_thread_mdelay(500);
    }
    return RT_EOK;
}
```

![2021-01-24_232214.png](https://oss-club.rt-thread.org/uploads/20210124/f2a26d811e1fb2a5e2a06bbb5f0c0ac2.png)

* 验证通过，LED正常闪烁，串口MSH 正常。

## 总结

* STM32H743 资源比较丰富，有2MB Flash，SRAM也比较大（1MB）,可以做点更复杂的工作。

* 继续研究RT-Thread 移植与使用，总结与积累，学以致用。