sTM32的USART串行通信实验全部代码

以下是STM32的USART串行通信实验全部代码，供参考：

#include "stm32f10x.h"
#include "USART.h"

void RCC_Configuration(void);
void GPIO_Configuration(void);
void USART_Configuration(void);
void NVIC_Configuration(void);

int main(void)
{
    RCC_Configuration();
    GPIO_Configuration();
    USART_Configuration();
    NVIC_Configuration();

    while(1)
    {
        USART_SendData(USART1, 'A');
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

        USART_SendData(USART1, 'B');
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

        USART_SendData(USART1, 'C');
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

        USART_SendData(USART1, 'D');
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

        USART_SendData(USART1, 'E');
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

        USART_SendData(USART1, 'F');
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

        USART_SendData(USART1, 'G');
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

        USART_SendData(USART1, 'H');
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

        USART_SendData(USART1, 'I');
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

        USART_SendData(USART1, 'J');
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

        USART_SendData(USART1, 'K');
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

        USART_SendData(USART1, 'L');
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

        USART_SendData(USART1, 'M');
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

        USART_SendData(USART1, 'N');
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

        USART_SendData(USART1, 'O');
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
    }
}

void RCC_Configuration(void)
{
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1, ENABLE);
}

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void USART_Configuration(void)
{
    USART_InitTypeDef USART_InitStructure;

    USART_InitStructure.USART_BaudRate = 115200;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Tx;
    USART_Init(USART1, &USART_InitStructure);

    USART_Cmd(USART1, ENABLE);
}

void NVIC_Configuration(void)
{
    NVIC_InitTypeDef NVIC_InitStructure;

    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);

    NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
}

void USART1_IRQHandler(void)
{
    if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
    {
        USART_ClearITPendingBit(USART1, USART_IT_RXNE);

        uint8_t data = USART_ReceiveData(USART1);
        USART_SendData(USART1, data);
    }
}

其中，USART.h头文件的内容为：

#ifndef __USART_H
#define __USART_H

#include "stm32f10x.h"

void USART_SendData(USART_TypeDef* USARTx, char c);
void USART_SendString(USART_TypeDef* USARTx, char* str);
void USART_SendNumber(USART_TypeDef* USARTx, uint32_t num);
void USART_SendFloat(USART_TypeDef* USARTx, float num);

#endif

USART.c文件的内容为：

#include "USART.h"

void USART_SendData(USART_TypeDef* USARTx, char c)
{
    USART_SendData(USARTx, (uint8_t)c);
    while(USART_GetFlagStatus(USARTx, USART_FLAG_TXE) == RESET);
}

void USART_SendString(USART_TypeDef* USARTx, char* str)
{
    while(*str)
    {
        USART_SendData(USARTx, *str++);
    }
}

void USART_SendNumber(USART_TypeDef* USARTx, uint32_t num)
{
    char buffer[10];
    int i = 0;
    do
    {
        buffer[i++] = num % 10 + '0';
        num /= 10;
    } while(num);

    while(i > 0)
    {
        USART_SendData(USARTx, buffer[--i]);
    }
}

void USART_SendFloat(USART_TypeDef* USARTx, float num)
{
    char buffer[10];
    sprintf(buffer, "%.2f", num);

    USART_SendString(USARTx, buffer);
}

需要注意的是，以上代码仅供参考，具体实现需要根据具体的硬件环境进行调整。