串口初始化函数已在cubemx自动生成，我们无需要改动，需要在public.c文件中添加printf重定向函数fputc();函数即可。

一、main函数

main.c

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file : main.c
  * @brief : Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; 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 co
  

 

  
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文章来源: blog.csdn.net，作者：果果小师弟，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/qq_39400113/article/details/117114175