使用stm32f10x的固件库 编写 stm32f103RCT6 串口2 DMA中断通讯 配置 通信代码

好的，我来解答你的问题。

首先，你需要使用STM32CubeMX来配置你的串口。在配置中，选择串口2，并启用DMA和中断。你需要将USART2的时钟使能，设置波特率和数据位、校验位、停止位等参数。在DMA设置中，选择通道和传输方向以及DMA传输的缓存区大小等。在中断设置中，选择接收中断和错误中断，并编写相应的中断处理程序。

接下来，我为你提供一个简单的串口通信代码的示例，你可以参考一下：

#include "stm32f10x.h"

#define BUFFER_SIZE 256

uint8_t RxBuffer[BUFFER_SIZE];
uint8_t TxBuffer[BUFFER_SIZE];

int main(void)
{
    USART_InitTypeDef USART_InitStruct;
    DMA_InitTypeDef DMA_InitStruct;
    NVIC_InitTypeDef NVIC_InitStruct;

    /* Enable clocks for USART2 and DMA1 */
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

    /* Configure USART2 */
    USART_StructInit(&USART_InitStruct);
    USART_InitStruct.USART_BaudRate = 9600;
    USART_InitStruct.USART_WordLength = USART_WordLength_8b;
    USART_InitStruct.USART_StopBits = USART_StopBits_1;
    USART_InitStruct.USART_Parity = USART_Parity_No;
    USART_InitStruct.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
    USART_Init(USART2, &USART_InitStruct);
    USART_Cmd(USART2, ENABLE);

    /* Configure DMA for USART2 Rx */
    DMA_StructInit(&DMA_InitStruct);
    DMA_InitStruct.DMA_PeripheralBaseAddr = (uint32_t)&(USART2->DR);
    DMA_InitStruct.DMA_MemoryBaseAddr = (uint32_t)RxBuffer;
    DMA_InitStruct.DMA_DIR = DMA_DIR_PeripheralSRC;
    DMA_InitStruct.DMA_BufferSize = BUFFER_SIZE;
    DMA_InitStruct.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
    DMA_InitStruct.DMA_MemoryInc = DMA_MemoryInc_Enable;
    DMA_InitStruct.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
    DMA_InitStruct.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
    DMA_InitStruct.DMA_Mode = DMA_Mode_Normal;
    DMA_InitStruct.DMA_Priority = DMA_Priority_High;
    DMA_InitStruct.DMA_M2M = DMA_M2M_Disable;
    DMA_Init(DMA1_Channel6, &DMA_InitStruct);
    DMA_Cmd(DMA1_Channel6, ENABLE);

    /* Configure DMA for USART2 Tx */
    DMA_StructInit(&DMA_InitStruct);
    DMA_InitStruct.DMA_PeripheralBaseAddr = (uint32_t)&(USART2->DR);
    DMA_InitStruct.DMA_MemoryBaseAddr = (uint32_t)TxBuffer;
    DMA_InitStruct.DMA_DIR = DMA_DIR_PeripheralDST;
    DMA_InitStruct.DMA_BufferSize = BUFFER_SIZE;
    DMA_InitStruct.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
    DMA_InitStruct.DMA_MemoryInc = DMA_MemoryInc_Enable;
    DMA_InitStruct.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
    DMA_InitStruct.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
    DMA_InitStruct.DMA_Mode = DMA_Mode_Normal;
    DMA_InitStruct.DMA_Priority = DMA_Priority_High;
    DMA_InitStruct.DMA_M2M = DMA_M2M_Disable;
    DMA_Init(DMA1_Channel7, &DMA_InitStruct);
    DMA_Cmd(DMA1_Channel7, ENABLE);

    /* Configure NVIC for DMA1_Channel6 */
    NVIC_InitStruct.NVIC_IRQChannel = DMA1_Channel6_IRQn;
    NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStruct.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStruct);

    /* Configure NVIC for DMA1_Channel7 */
    NVIC_InitStruct.NVIC_IRQChannel = DMA1_Channel7_IRQn;
    NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStruct.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStruct);

    /* Enable USART2 DMA Rx and Tx */
    USART_DMACmd(USART2, USART_DMAReq_Rx, ENABLE);
    USART_DMACmd(USART2, USART_DMAReq_Tx, ENABLE);

    /* Enable USART2 DMA interrupts */
    DMA_ITConfig(DMA1_Channel6, DMA_IT_TC, ENABLE);
    DMA_ITConfig(DMA1_Channel7, DMA_IT_TC, ENABLE);

    while (1)
    {
        /* Main loop */
    }

    return 0;
}

void DMA1_Channel6_IRQHandler(void)
{
    if (DMA_GetITStatus(DMA1_IT_TC6))
    {
        DMA_ClearITPendingBit(DMA1_IT_TC6);
        /* Rx DMA transfer complete */
    }
}

void DMA1_Channel7_IRQHandler(void)
{
    if (DMA_GetITStatus(DMA1_IT_TC7))
    {
        DMA_ClearITPendingBit(DMA1_IT_TC7);
        /* Tx DMA transfer complete */
    }
}

这是一个基本的串口通信代码，你可以根据自己的需求进行修改和完善。