帮我写一个stm32f10串口2dma接收数据代码示例包括处理数据完整性和错误检测

以下是一个基本的 STM32F10 串口 2 DMA 接收数据的代码示例，包括处理数据完整性和错误检测：

#include "stm32f10x.h"

#define BUFFER_SIZE 256

uint8_t buffer[BUFFER_SIZE];
uint16_t buffer_index = 0;

void DMA1_Channel5_IRQHandler(void)
{
    if (DMA_GetITStatus(DMA1_IT_TC5) != RESET)
    {
        DMA_ClearITPendingBit(DMA1_IT_TC5);
        buffer_index = 0;
    }
}

void USART2_IRQHandler(void)
{
    if (USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)
    {
        buffer[buffer_index++] = USART_ReceiveData(USART2);
        if (buffer_index >= BUFFER_SIZE)
        {
            buffer_index = 0;
        }
    }
}

int main(void)
{
    // 初始化串口 2
    USART_InitTypeDef USART_InitStructure;
    USART_StructInit(&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_Rx;
    USART_Init(USART2, &USART_InitStructure);
    USART_Cmd(USART2, ENABLE);

    // 初始化 DMA
    DMA_InitTypeDef DMA_InitStructure;
    DMA_StructInit(&DMA_InitStructure);
    DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART2->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);
    DMA_ITConfig(DMA1_Channel5, DMA_IT_TC, ENABLE);
    DMA_Cmd(DMA1_Channel5, ENABLE);

    // 初始化 NVIC
    NVIC_InitTypeDef NVIC_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);

    NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);

    while (1)
    {
        // 处理数据完整性和错误检测
        // ...
    }
}

这个代码示例使用了 STM32F10 的串口 2 和 DMA 功能，通过 DMA 将串口接收到的数据存储到一个缓冲区中，然后在主循环中处理数据完整性和错误检测。具体的处理方式需要根据实际需求进行设计。