编写stm32f103c8t6通过USART1串口接收RS232串口信息的代码

以下是通过USART1串口接收RS232串口信息的代码：

#include "stm32f10x.h"

void USART1_Init(void);
void USART1_IRQHandler(void);

int main(void)
{
    USART1_Init();

    while (1)
    {
        // 等待接收数据
    }
}

void USART1_Init(void)
{
    // 使能USART1时钟
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);

    // USART1 GPIO初始化
    GPIO_InitTypeDef GPIO_InitStructure;
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
    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);

    // USART1初始化
    USART_InitTypeDef USART_InitStructure;
    USART_InitStructure.USART_BaudRate = 9600;
    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_Rx;
    USART_Init(USART1, &USART_InitStructure);

    // 使能USART1接收中断
    NVIC_InitTypeDef NVIC_InitStructure;
    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);

    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);

    // 使能USART1
    USART_Cmd(USART1, ENABLE);
}

void USART1_IRQHandler(void)
{
    if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
    {
        // 读取接收到的数据
        uint8_t data = USART_ReceiveData(USART1);

        // 处理接收到的数据
        // ...

        USART_ClearITPendingBit(USART1, USART_IT_RXNE);
    }
}

在上面的代码中，我们首先初始化了USART1和相关GPIO，然后使能了USART1接收中断，并在中断处理函数中读取接收到的数据。在主循环中，我们等待接收到数据。你需要根据实际的应用场景来处理接收到的数据。