stm32f407zet6DMA程序

以下是一个使用stm32f407zet6的DMA传输程序的示例：

#include "stm32f4xx.h"

#define BUFFER_SIZE 32

uint32_t srcBuffer[BUFFER_SIZE];
uint32_t dstBuffer[BUFFER_SIZE];

void DMA_Configuration(void)
{
    // Enable DMA1 clock
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE);

    DMA_InitTypeDef DMA_InitStructure;
    DMA_StructInit(&DMA_InitStructure);
    DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)srcBuffer;
    DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)dstBuffer;
    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
    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_Word;
    DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
    DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
    DMA_InitStructure.DMA_Priority = DMA_Priority_High;
    DMA_InitStructure.DMA_Channel = DMA_Channel_0;
    DMA_Init(DMA1_Stream0, &DMA_InitStructure);

    // Enable DMA1 Stream0
    DMA_Cmd(DMA1_Stream0, ENABLE);
}

int main(void)
{
    // Initialize the source buffer
    for (int i = 0; i < BUFFER_SIZE; i++) {
        srcBuffer[i] = i;
    }

    DMA_Configuration();

    // Wait for DMA transfer to complete
    while (DMA_GetFlagStatus(DMA1_Stream0, DMA_FLAG_TCIF0) == RESET);

    // Verify the destination buffer
    for (int i = 0; i < BUFFER_SIZE; i++) {
        if (dstBuffer[i] != srcBuffer[i]) {
            // Error: destination buffer does not match source buffer
        }
    }

    while (1) {
        // Main loop
    }
}

该示例代码将DMA配置为从srcBuffer中的32位字（word）传输到dstBuffer中的32位字。在main函数中，srcBuffer被初始化为0到31的连续数字。然后，DMA传输被启动，并在传输完成后等待。最后，程序将检查dstBuffer是否与srcBuffer匹配。