#include?“stm32f4xx.h“
#include?“BSP_ADC.h“

#define?ADC_DR_ADDRESS????（（uint32_t）0x40012308）
#define?ADC_BUF_SIZE?4
__IO?u16?aADCConvertedValue[ADC_BUF_SIZE];

//初始化ADC															???
void?_BSP_ADC_Init（）
{
	
	ADC_CommonInitTypeDef?ADC_CommonInitStructure?;
	ADC_InitTypeDef???????ADC_InitStructure;
	DMA_InitTypeDef???????DMA_InitStructure;

	DMA_DeInit（DMA2_Stream0）;

	while?（DMA_GetCmdStatus（DMA2_Stream0）?!=?DISABLE）
	{
	}

	/*?DMA2?Stream0?channel2?configuration?**************************************/
	DMA_InitStructure.DMA_Channel?=?DMA_Channel_0;??
	DMA_InitStructure.DMA_PeripheralbaseAddr?=?（uint32_t）ADC_DR_ADDRESS;
	DMA_InitStructure.DMA_Memory0baseAddr?=?（uint32_t）aADCConvertedValue;
	DMA_InitStructure.DMA_DIR?=?DMA_DIR_PeripheralToMemory;
	DMA_InitStructure.DMA_BufferSize?=?ADC_BUF_SIZE;
	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_Enable;?????????
	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）;

	RCC_APB2PeriphResetCmd（RCC_APB2Periph_ADC1ENABLE）;	??//ADC1復(fù)位
	RCC_APB2PeriphResetCmd（RCC_APB2Periph_ADC1DISABLE）;	//復(fù)位結(jié)束	?

	RCC_APB2PeriphResetCmd（RCC_APB2Periph_ADC2ENABLE）;	??//ADC2復(fù)位
	RCC_APB2PeriphResetCmd（RCC_APB2Periph_ADC2DISABLE）;	//復(fù)位結(jié)束	?

	ADC_CommonInitStructure.ADC_Mode?=?ADC_DualMode_RegSimult;//雙通道模式
	ADC_CommonInitStructure.ADC_TwoSamplingDelay?=?ADC_TwoSamplingDelay_5Cycles;//兩個(gè)采樣階段之間的延遲5個(gè)時(shí)鐘
	ADC_CommonInitStructure.ADC_DMAAccessMode?=?ADC_DMAAccessMode_1;?//DMA
	ADC_CommonInitStructure.ADC_Prescaler?=?ADC_Prescaler_Div8;//預(yù)分頻4分頻。ADCCLK=PCLK2/8=168/8=21MhzADC時(shí)鐘最好不要超過36Mhz?
	ADC_CommonInit（&ADC_CommonInitStructure）;//初始化

	ADC_InitStructure.ADC_Resolution?=?ADC_Resolution_12b;//12位模式
	ADC_InitStructure.ADC_ScanConvMode?=?ENABLE;//掃描模式	
	ADC_InitStructure.ADC_ContinuousConvMode?=?ENABLE;//連續(xù)轉(zhuǎn)換
	ADC_InitStructure.ADC_ExternalTrigConvEdge?=?ADC_ExternalTrigConvEdge_None;//禁止觸發(fā)檢測(cè)，使用軟件觸發(fā)
	ADC_InitStructure.ADC_ExternalTrigConv?=?ADC_ExternalTrigConv_T1_CC1;
	ADC_InitStructure.ADC_DataAlign?=?ADC_DataAlign_Right;//右對(duì)齊	
	ADC_InitStructure.ADC_NbrOfConversion?=?2;//??2個(gè)轉(zhuǎn)換在規(guī)則序列中?也就是只轉(zhuǎn)換規(guī)則序列2

	ADC_Init（ADC2?&ADC_InitStructure）;//ADC初始化

	/*?ADC2?regular?channel5?configuration?**************************************/
	ADC_RegularChannelConfig（ADC2?ADC_Chann