STM32F4多通道ADC转换

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1、#include"stm32f4_discovery.h"#include#defineADC1_DR_Address((uint32_t)0X4001204C)__IOuint16_tAD_Value[4]={0,0,0,0};//0-3storeVoltagevalue,4storetemperaturevalue.__IOuint32_tADC1ConvertedVolt_0=0;__IOuint32_tADC1ConvertedVolt_1=0;__IOuint32_tADC1ConvertedVolt_2=0;__IOuint32_tADC1Conver

2、tedVolt_3=0;voidADC1_DMA_Config(void);intmain(void){ADC1_DMA_Config();/*StartADC1SoftwareConversion*/ADC_SoftwareStartConv(ADC1);while(1){ADC1ConvertedVolt_0=AD_Value[0]*3300/0xFFF;ADC1ConvertedVolt_1=AD_Value[1]*3300/0xFFF;ADC1ConvertedVolt_2=AD_Value[2]*3300/0xFFF;ADC1ConvertedVolt_3=AD_Valu

3、e[3]*3300/0xFFF;}}voidADC1_DMA_Config(void){ADC_InitTypeDefADC_InitStructure;ADC_CommonInitTypeDefADC_CommonInitStructure;DMA_InitTypeDefDMA_InitStructure;GPIO_InitTypeDefGPIO_InitStructure;/*EnableADC1,DMA2andGPIOclocks****************************************///ADC1inDMA2channel_0,Stream0RCC_

4、AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2

5、RCC_AHB1Periph_GPIOC,ENABLE);//DMA2,GPIOuseAHB1BUSRCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1,ENABLE);//ADCuseAPB2BUSDMA_InitStructure.DMA_Channel=DMA_Channel_0;DMA_InitStructure.DMA_PeripheralBaseAddr=(uint32_t)ADC1_DR_Address;//ADC1DATAADDRESSDMA_InitStr

6、ucture.DMA_Memory0BaseAddr=(uint32_t)&AD_Value;//DMAmemorybaseaddressDMA_InitStructure.DMA_DIR=DMA_DIR_PeripheralToMemory;DMA_InitStructure.DMA_BufferSize=4;DMA_InitStructure.DMA_PeripheralInc=DMA_PeripheralInc_Disable;//peripheraincmode:whenhavemultiperipherasneedtouseDMADMA_InitStructure.DMA

7、_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;//needcontinuevisitDMA_InitStructure.DMA_Priority=DMA_Priority_High;DMA_InitStr

8、ucture.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(D