我发送0X41 收到0X0B  发送0x0b收到0X0B  发送0bc 收到0XC7全部代码如下：

#include "stm32f10x.h"

void My_USART_Init();
void My_UART_Sent_Data(unsigned char dat);

int main()
{
        My_USART_Init();
        while(1)
        {
                My_UART_Sent_Data(0xbc);
        }
}
具体寄存器，麻烦查阅一下STM32中文查考手册





void My_USART_Init()
{
        GPIO_InitTypeDef GPIO_InitStructure;
       
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
       
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
        GPIO_Init(GPIOA, &GPIO_InitStructure);
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
        GPIO_Init(GPIOA, &GPIO_InitStructure);
       
        *(unsigned int*)(0X40013800 + 0x0c) = 0x0000200c; //8位数据位
        *(unsigned int*)(0x40013800 + 0x10) = 0x00000000;
        *(unsigned int*)(0x40013800 + 0x08) = 72000000 / 57600;//57600的波特率
        *(unsigned int*)(0X40013800 + 0x0c) = 0x0000200c; //8位数据位
        My_UART_Sent_Data(0xff);  //我不确定空闲符是我自己发还是系统发，我觉得自己发一次应该不会有问题。
}
void My_UART_Sent_Data(unsigned char dat)
{
        *(unsigned int*)(0x40013800 + 0x04) = dat;
        while(!((*(unsigned int*)(0x40013800)) & (1 << 6)));
}