STM32 ADC and DMA multi-channel processing

#define ADC1_DR_Address ((uint32_t)0x4001244C)//ADC1 DR register base address
DMA_InitTypeDef DMA_InitStructure; //ＤＭＡ
ADC_InitTypeDef ADC_InitStructure; //ADC 
#define ADC_CH 2 //Number of channels
#define ADC_num 10 //Number of acquisition points
vu16 After_filter[ADC_CH]; //Used to store the result after averaging
vu16 ADCConvertedValue[ADC_num][ADC_CH];//AD data cache
/***********************************************************************************
* Function name: DMA_Configuration(void) 
* Function: DMA controller settings
* Parameter variables: NONE
* Global variables: NONE
* Calling function:
* Modification time: 
* Version: V1.0 
* Status: ADC1 uses DMA1 channel CH1
**********************************************************************************/
void DMA_Configuration(void)
{
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); //Enable DMA clock
  //DMA1 channel1 configuration ----------------------------------------------
  DMA_DeInit(DMA1_Channel1);
  DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADCConvertedValue;//Store ADC value
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;//Data destination address RAM
  DMA_InitStructure.DMA_BufferSize = ADC_CH*ADC_num;//Allocate internal RAM
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //Peripheral address does not changeDMA_InitStructure.DMA_MemoryInc
  = DMA_MemoryInc_Enable; //Memory address incrementsDMA_InitStructure.DMA_PeripheralDataSize
  = DMA_PeripheralDataSize_HalfWord; //Data width is 16
  bitsDMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; //Data width is 16
  bitsDMA_InitStructure.DMA_Mode = DMA_Mode_Circular; //Working circular storage modeDMA_InitStructure.DMA_Priority
  = DMA_Priority_High; //High priorityDMA_InitStructure.DMA_M2M
  = DMA_M2M_Disable; //Data memory to memory transferDMA_Init
  (DMA1_Channel1, &DMA_InitStructure); //
  // Enable DMA1 channel1 
  DMA_Cmd(DMA1_Channel1, ENABLE);
}
/***************************************************************************
* Function name: ADC_Configuration 
* Function: ADC function settings use DMA bus channel 1
* Parameter variable: NONE
* Global variable: NONE
* Calling function:
* Modification time: 
* Version: V1.0 
* Status: Debugging completed
*******************************************************************************/
void ADC_Configuration(void)
{
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE); // Enable ADC1 clock
  // ADC1 configuration ------------------------------------------------------
  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent; // ADC1 and ADC2 work independently
  ADC_InitStructure.ADC_ScanConvMode = ENABLE; //Work in multiple channels
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; //Work in continuous mode
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; //Select software trigger
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //Data right alignment
  ADC_InitStructure.ADC_NbrOfChannel = ADC_CH; //N channels
  ADC_Init(ADC1, &ADC_InitStructure); // ADC1 initialization
  ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 1, ADC_SampleTime_239Cycles5); //GPIO.4 UA
  ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 2, ADC_SampleTime_239Cycles5); //GPIOA.5 UB
  
  
  ADC_DMACmd(ADC1, ENABLE); //Enable DMA ADC1 
  ADC_Cmd(ADC1, ENABLE); //Enable ADC1 
  ADC_ResetCalibration(ADC1); //Reset the calibration register of the specified ADCwhile
  (ADC_GetResetCalibrationStatus(ADC1)); //Wait for resetting the calibration register of the specified
  ADCADC_StartCalibration(ADC1); //Start the calibration procedure of the specified ADCwhile 
  (ADC_GetCalibrationStatus(ADC1)); // Check the end of ADC1 calibration  
  ADC_SoftwareStartConvCmd(ADC1, ENABLE); // Enable or disable the software conversion start function of the specified ADC
}
/**********************************************************************************
* Function name: GetVolt(u16 advalue)
* Function function: Get the value of ADC and convert binary to decimal
* Parameter variable: NONE
* Global variable: NONE
* Calling function:
* Modification time: 
* Modification content: 
* Version: V1.0 
* Status:
**************************************************************************/
u16 GetVolt(u16 advalue) 
{ 
return (u16)(advalue * 330 / 4096); //The result is enlarged 100 times to facilitate the decimal below
}  
/******************************************************************************
* Function name: void Filter(void)
* Function function: Average value function
* Parameter variable: NONE
* Global variable: NONE
* Call function:
* Modification time: 
* Modification content: 
* Version: V1.0 
* Status:
**************************************************************************/ 
void Filter(void) 
{  
int sum = 0; 
u8 count,temp_i; 
    for(temp_i=0;temp_i         { 
            for ( count=0;count                   { 
                  sum += ADCConvertedValue[count][temp_i]&0xFFFC; 
                  }  
              After_filter[temp_i]=sum/ADC_num; 
              sum=0;  
        } 
} 
/******************************************************************************
* Function name: Data_conversion()
* Function function: Data conversion 
* Parameter variable: NONE
* Global variable: NONE
* Calling function:
* Modification time: 
* Modification content: 
* Version: V1.0 
* Status:
******************************************************************************/
void Data_conversion()
{
    Filter(); //Get operation data
  // RT.UB= GetVolt(After_filter[0]); 
  // RT.UA= GetVolt(After_filter[1]); 
  
}