STM32F407 ADC1 DMA 采集完整DEMO

以下是一个完整的基于STM32F407芯片的ADC1 DMA采集Demo程序，你可以参考它来进行开发：

#include "stm32f4xx.h"
#include "stm32f4xx_rcc.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_adc.h"
#include "stm32f4xx_dma.h"

#define ADC1_DR_ADDRESS ((uint32_t)0x4001204C) // 定义ADC1数据寄存器地址

#define ADC1_CHANNEL_NUM 3 // ADC1采集通道数
#define ADC1_SAMPLE_NUM 10 // 每个通道采集次数

__IO uint16_t ADC1ConvertedValues[ADC1_CHANNEL_NUM * ADC1_SAMPLE_NUM]; // 定义存储ADC1采集结果的数组

void RCC_Configuration(void);
void GPIO_Configuration(void);
void ADC1_DMA_Configuration(void);

int main(void)
{
    RCC_Configuration(); // 配置系统时钟
    GPIO_Configuration(); // 配置GPIO
    ADC1_DMA_Configuration(); // 配置ADC1和DMA

    while (1)
    {
        // 等待采集完成
        while (DMA_GetFlagStatus(DMA2_Stream0, DMA_FLAG_TCIF0) == RESET);

        // 打印采集结果
        for (int i = 0; i < ADC1_CHANNEL_NUM * ADC1_SAMPLE_NUM; i++)
        {
            printf("%d ", ADC1ConvertedValues[i]);
        }
        printf("\n");

        DMA_ClearFlag(DMA2_Stream0, DMA_FLAG_TCIF0); // 清除DMA传输完成标志
        DMA_Cmd(DMA2_Stream0, ENABLE); // 重新使能DMA传输
        ADC_SoftwareStartConv(ADC1); // 开始新一轮ADC1采集
    }
}

void RCC_Configuration(void)
{
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE); // 使能DMA2时钟
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE); // 使能GPIOA时钟
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE); // 使能ADC1时钟
}

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    // 配置PA0、PA1、PA2为模拟输入
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void ADC1_DMA_Configuration(void)
{
    DMA_InitTypeDef DMA_InitStructure;
    ADC_InitTypeDef ADC_InitStructure;
    ADC_CommonInitTypeDef ADC_CommonInitStructure;

    // 配置DMA传输参数
    DMA_InitStructure.DMA_Channel = DMA_Channel_0;
    DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC1_DR_ADDRESS;
    DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&ADC1ConvertedValues;
    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
    DMA_InitStructure.DMA_BufferSize = ADC1_CHANNEL_NUM * ADC1_SAMPLE_NUM;
    DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
    DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
    DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
    DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
    DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
    DMA_InitStructure.DMA_Priority = DMA_Priority_High;
    DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
    DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
    DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
    DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
    DMA_Init(DMA2_Stream0, &DMA_InitStructure);

    DMA_Cmd(DMA2_Stream0, ENABLE); // 使能DMA传输

    // 配置ADC1参数
    ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
    ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div4;
    ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
    ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
    ADC_CommonInit(&ADC_CommonInitStructure);

    ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
    ADC_InitStructure.ADC_ScanConvMode = ENABLE;
    ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
    ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_NbrOfConversion = ADC1_CHANNEL_NUM;
    ADC_Init(ADC1, &ADC_InitStructure);

    // 配置ADC1通道
    ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_56Cycles);
    ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_56Cycles);
    ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 3, ADC_SampleTime_56Cycles);

    ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE); // DMA传输完最后一个采样点后自动停止转换
    ADC_DMACmd(ADC1, ENABLE); // 使能ADC1 DMA传输
    ADC_Cmd(ADC1, ENABLE); // 使能ADC1
    ADC_SoftwareStartConv(ADC1); // 开始ADC1转换
}

这个程序实现了ADC1采集PA0、PA1、PA2三个通道的模拟信号，并使用DMA将采集结果存储到数组中。在主函数中，等待DMA传输完成后打印采集结果，并重新启动ADC1和DMA进行下一轮采集。