代码使用cubemx工具开发，主要使用了函数指针和结构体方面的知识。程序具有非常具有可移植性，实用性。
一、main函数
main.c
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2020 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensour转载：https://blog.csdn.net/qq_39400113/article/details/117107160
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