STM32F303 DMA ADC4

void ADC_VoltageInit(){

  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2,ENABLE);

  RCC_AHBPeriphClockCmd(RCC_AHBENR_ADC34EN,ENABLE);

  RCC_AHBPeriphClockCmd(RCC_AHBENR_GPIOBEN,ENABLE);

  GPIO_InitADC.GPIO_Mode = GPIO_Mode_AN;

  GPIO_InitADC.GPIO_PuPd = GPIO_PuPd_NOPULL;

  GPIO_InitADC.GPIO_Pin = GPIO_Pin_12;

  GPIO_Init(GPIOB,&GPIO_InitADC);

  RCC_ADCCLKConfig(RCC_ADC34PLLCLK_Div1); 

  ADC_Init(ADC4,&ADC_Struct);

  ADC_VoltageRegulatorCmd(ADC4,ENABLE);

  Delay(10);//Warte auf den Regulator;

  ADC_SelectCalibrationMode(ADC4,ADC_CalibrationMode_Single);

  ADC_StartCalibration(ADC4);

  while(ADC_GetCalibrationStatus(ADC4) != RESET);

  nvicADC.NVIC_IRQChannelCmd = ENABLE;      

  nvicADC.NVIC_IRQChannelPreemptionPriority = 1; 

  nvicADC.NVIC_IRQChannelSubPriority = 1;    

  nvicADC.NVIC_IRQChannel = DMA2_Channel4_IRQn;

  NVIC_Init(&nvicADC);

  SYSCFG_DMAChannelRemapConfig(SYSCFG_DMARemap_ADC2ADC4,ENABLE);

  ADC_Def.ADC_Clock = ADC_Clock_AsynClkMode;

  ADC_Def.ADC_Mode = ADC_Mode_Independent;

  ADC_Def.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;

  ADC_Def.ADC_DMAMode = ADC_DMAMode_Circular;

  ADC_Def.ADC_TwoSamplingDelay = 0;

  ADC_CommonInit(ADC4,&ADC_Def);

  ADC_Struct.ADC_ContinuousConvMode = ADC_ContinuousConvMode_Enable;

  ADC_Struct.ADC_Resolution = ADC_Resolution_10b;

  ADC_Struct.ADC_ExternalTrigConvEvent = ADC_ExternalTrigConvEvent_0;

  ADC_Struct.ADC_ExternalTrigEventEdge = ADC_ExternalTrigEventEdge_None;

  ADC_Struct.ADC_DataAlign = ADC_DataAlign_Right;

  ADC_Struct.ADC_OverrunMode = ADC_OverrunMode_Disable;

  ADC_Struct.ADC_AutoInjMode = ADC_AutoInjec_Disable;

  ADC_Struct.ADC_NbrOfRegChannel = 1;

  ADC_Init(ADC4,&ADC_Struct);

  ADC_RegularChannelConfig(ADC4,ADC_Channel_3,1,ADC_SampleTime_7Cycles5);

  dmaADCInit.DMA_BufferSize = ADC_LNG;

  dmaADCInit.DMA_DIR = DMA_DIR_PeripheralSRC;

  dmaADCInit.DMA_M2M = DMA_M2M_Disable;

  dmaADCInit.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;

  dmaADCInit.DMA_MemoryInc = DMA_MemoryInc_Enable;

  dmaADCInit.DMA_Mode = DMA_Mode_Normal;

  dmaADCInit.DMA_PeripheralDataSize = DMA_MemoryDataSize_HalfWord;

  dmaADCInit.DMA_PeripheralInc = DMA_MemoryInc_Disable;

  dmaADCInit.DMA_Priority = DMA_Priority_Medium;

  dmaADCInit.DMA_MemoryBaseAddr = (uint32_t)ADC3ConvertedValue;

  dmaADCInit.DMA_PeripheralBaseAddr = (uint32_t)&ADC4->DR;

  DMA_Init(DMA2_Channel4,&dmaADCInit);

  DMA_ITConfig(DMA2_Channel4,DMA2_IT_TC4,ENABLE);

  ADC_DMAConfig(ADC4,ADC_DMAMode_OneShot);

  ADC_DMACmd(ADC4,ENABLE);

  ADC_Cmd(ADC4,ENABLE);

  while(!ADC_GetFlagStatus(ADC4, ADC_FLAG_RDY));

  DMA_Cmd(DMA2_Channel4,ENABLE);

  ADC_StartConversion(ADC4);

}