ADC 구현관련 문의드립니다

#define  BSP_MODULE
#define ADC1_DR_ADDRESS    ((uint32_t)0x40012458)
 
//#define 
__IO float ADC_ConvertedValue;  
 
void ADC_Config(void)
{
  GPIO_Configuration();
  ADC_Configuration();
 
}
 
void ADC_Configuration(void)
{
  ADC_InitTypeDef ADC_InitStructure;
  DMA_InitTypeDef DMA_InitStructure;  
 
    /* DMA1 channel1 configuration ---------------------------------------------*/
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1,ENABLE); 
  DMA_DeInit(DMA1_Channel1);
  DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_ADDRESS;
  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADC_ConvertedValue;
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
  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_M2M = DMA_M2M_Disable;
  DMA_Init(DMA1_Channel1, &DMA_InitStructure);
  DMA_Cmd(DMA1_Channel1, ENABLE);
 
  /* ADC1 configuration ------------------------------------------------------*/
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);  
  ADC_CommonInitTypeDef  ADC_CommonInitStructure;
  ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div4;
  ADC_CommonInit(&ADC_CommonInitStructure);
 
  ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
  ADC_InitStructure.ADC_ScanConvMode = ENABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConvEdge_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfConversion = 1;
  ADC_Init(ADC1, &ADC_InitStructure);
 
  ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 1, ADC_SampleTime_16Cycles);  
 
  ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);
 
  //Enable ADC1 DMA
  ADC_DMACmd(ADC1, ENABLE);
 
  //Enable ADC1
  ADC_Cmd(ADC1, ENABLE);  
  /* Wait until the ADC1 is ready */
  while(ADC_GetFlagStatus(ADC1, ADC_FLAG_ADONS) == SET){  }  
 
  //Start ADC1 Conversion
  ADC_SoftwareStartConv(ADC1);  
 
}
 
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
 
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC , ENABLE);
 
  /* Configure PC.0 (ADC Channel0) as analog input -------------------------*/
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
  GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_NOPULL;
  GPIO_Init(GPIOC, &GPIO_InitStructure);
 
}  
 
void Voltage_Check(void)
{
  char conv_char[11]={0,};
  BSP_Debug_Put_String("\r\n");    
  sprintf(conv_char,"%d",ADC_ConvertedValue+1);
  BSP_Debug_Put_String("ADC Value\r\n");    
  BSP_Debug_Put_String(conv_char);  
 
  BSP_Debug_Put_String("\r\n");      
  sprintf(conv_char,"%d",ADC_ConvertedValue*3300/4096);
  BSP_Debug_Put_String(conv_char);    
}