DMA1_Channel1_IRQn 具体的使用代码

好的，以下是一个使用 DMA1_Channel1_IRQn 中断的 STM32F4 程序的代码示例，主要实现了从 ADC1 数据寄存器中读取采样数据，通过 DMA1 传输到内存中，并在传输完成时通过 DMA1_Channel1_IRQHandler 中断进行处理：

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

#define ADC1_DR_ADDRESS ((uint32_t)0x4001204C)
#define ADC1_CHANNEL 0

volatile uint16_t ADCValue;

void DMA_Configuration(void)
{
    DMA_InitTypeDef DMA_InitStructure;
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE);

    DMA_DeInit(DMA1_Stream0);

    DMA_InitStructure.DMA_Channel = DMA_Channel_0;
    DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&ADC1->DR;
    DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&ADCValue;
    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
    DMA_InitStructure.DMA_BufferSize = 1;
    DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
    DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
    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(DMA1_Stream0, &DMA_InitStructure);

    DMA_Cmd(DMA1_Stream0, ENABLE);
}

void ADC_Configuration(void)
{
    ADC_InitTypeDef ADC_InitStructure;
    GPIO_InitTypeDef GPIO_InitStructure;
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    ADC_CommonInitTypeDef ADC_CommonInitStructure;
    ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
    ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;
    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 = DISABLE;
    ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
    ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
    ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_NbrOfConversion = 1;
    ADC_Init(ADC1, &ADC_InitStructure);

    ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_15Cycles);

    ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);

    ADC_DMACmd(ADC1, ENABLE);

    ADC_Cmd(ADC1, ENABLE);

    ADC_SoftwareStartConv(ADC1);
}

void NVIC_Configuration(void)
{
    NVIC_InitTypeDef NVIC_InitStructure;
    NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel1_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
}

void DMA1_Channel1_IRQHandler(void)
{
    if(DMA_GetFlagStatus(DMA1_Stream0, DMA_FLAG_TCIF0) != RESET)
    {
        DMA_ClearFlag(DMA1_Stream0, DMA_FLAG_TCIF0);
        ADC_SoftwareStartConv(ADC1);
        // 处理采样数据
    }
}

int main(void)
{
    DMA_Configuration();
    ADC_Configuration();
    NVIC_Configuration();

    while(1);
}

这份代码主要完成了以下工作：

1. 配置 ADC1 和 GPIOA0，设置采样通道和采样时间；
2. 配置 DMA1_Stream0，将 ADC1 的 DR 寄存器的值传输到 ADCValue 变量中；
3. 配置 DMA1_Channel1_IRQn 中断，设置优先级，并在传输完成时进行处理。

在程序中，ADC_SoftwareStartConv 函数用于启动 ADC1 的转换，将采样数据传输到 ADCValue 变量中，当 DMA1_Stream0 传输完成时，会触发 DMA1_Channel1_IRQHandler 中断，我们可以在此中断服务函数中进行采样数据的处理。