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适用于所有串口的初始化函数

(使用的芯片为stm32f103zet6)


函数原型为:
void usart_init(u32 BaudRate);

  • 参数BautRate为串口的波特率,32位长度
  • 该函数无返回值

例程代码:

#include "usart.h"
#include "stdio.h"

int main()
{
    usart_init(115200);
    while (1)
    {
        printf("hello world!\r\n");
    }
    
}

该函数默认初始化USART1
若要进行修改,可将usart.h文件里的宏定义
#define DEBUG_USART1
修改为:
#define DEBUG_USART2
#define DEBUG_USART3

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stm32f103zet6的串口驱动代码

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