帮我写一个stm32f10串口1通过DMA接收数据的完整实例代码

好的，以下是一个基于STM32F10的串口1通过DMA接收数据的完整实例代码：

#include "stm32f10x.h"

#define BUFFER_SIZE 256

uint8_t buffer[BUFFER_SIZE];
uint8_t rx_index = 0;

void USART1_IRQHandler(void)
{
    if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
    {
        buffer[rx_index++] = USART_ReceiveData(USART1);
    }
}

void DMA1_Channel5_IRQHandler(void)
{
    if (DMA_GetITStatus(DMA1_IT_TC5) != RESET)
    {
        DMA_ClearITPendingBit(DMA1_IT_TC5);
        DMA_Cmd(DMA1_Channel5, DISABLE);
    }
}

int main(void)
{
    USART_InitTypeDef USART_InitStructure;
    DMA_InitTypeDef DMA_InitStructure;
    NVIC_InitTypeDef NVIC_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

    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_Rx;
    USART_Init(USART1, &USART_InitStructure);

    DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART1->DR;
    DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)buffer;
    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
    DMA_InitStructure.DMA_BufferSize = BUFFER_SIZE;
    DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
    DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
    DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
    DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
    DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
    DMA_InitStructure.DMA_Priority = DMA_Priority_High;
    DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
    DMA_Init(DMA1_Channel5, &DMA_InitStructure);

    NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel5_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);
    DMA_ITConfig(DMA1_Channel5, DMA_IT_TC, ENABLE);
    DMA_Cmd(DMA1_Channel5, ENABLE);
    USART_Cmd(USART1, ENABLE);

    while (1)
    {
        // do something with received data
    }
}

这个代码使用了STM32F10的USART1和DMA1模块，通过USART1接收串口数据，并使用DMA1将数据存储到一个缓冲区中。在接收到数据后，可以在主循环中对数据进行处理。注意，这个代码只是一个示例，实际应用中需要根据具体需求进行修改。