DMA geht nur einmal! STM32

while(1){

      if (Flags.RS232DebugOut){

        Flags.RS232DebugOut = OFF;

        Set_DataCounter(10000);

        uint32_t Temp = 0;

        Temp = DMA_GetCurrDataCounter(DMA2_Stream0);

        printf("\n%u", (unsigned int)Temp);

        MyDelayMS(10);

        Temp = DMA_GetCurrDataCounter(DMA2_Stream0);

        printf("\n%u", (unsigned int)Temp);

      }

    }

void Init_ADC ( void )

{

  /* Takt für Peripherie setzen */

    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);

    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2 , ENABLE);

    RCC_APB2PeriphClockCmd( RCC_APB2Periph_ADC1, ENABLE);

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

    GPIO_InitTypeDef GPIO_InitStructure;

    GPIO_StructInit(&GPIO_InitStructure);

    ADC_InitTypeDef ADC_InitStructure;

    ADC_StructInit(&ADC_InitStructure);

    ADC_CommonInitTypeDef ADC_CommonInitStructure;

    ADC_CommonStructInit(&ADC_CommonInitStructure);

    DMA_InitTypeDef DMA_InitStructure;

    DMA_StructInit(&DMA_InitStructure);

    TIM_TimeBaseInitTypeDef TIM_TimeBase_InitStructure;

    TIM_TimeBaseStructInit (&TIM_TimeBase_InitStructure);

//    NVIC_InitTypeDef NVIC_InitStructure;

    TIM_TimeBase_InitStructure.TIM_ClockDivision = TIM_CKD_DIV1;

    TIM_TimeBase_InitStructure.TIM_CounterMode = TIM_CounterMode_Up;

    TIM_TimeBase_InitStructure.TIM_Period = 840;

    TIM_TimeBase_InitStructure.TIM_Prescaler = 0;

    TIM_TimeBaseInit(TIM2, &TIM_TimeBase_InitStructure);

    TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);

    TIM_SelectOutputTrigger(TIM2,TIM_TRGOSource_Update);

    TIM_ARRPreloadConfig(TIM2, ENABLE);

//    NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;

//    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

//    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;

//    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;

//    NVIC_Init(&NVIC_InitStructure);

    //TIM_Cmd(TIM2, ENABLE);

    /////////////////////////////////////////////////////////////////

    // GPIOC

    /////////////////////////////////////////////////////////////////

    /* ADC Kanäle */

    /* IO initialisieren */

    GPIO_StructInit(&GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2;

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;

    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;

    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;

    GPIO_Init(GPIOC, &GPIO_InitStructure);

    GPIO_StructInit(&GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2;

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;

    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;

    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;

    GPIO_Init(GPIOC, &GPIO_InitStructure);

    /* DMA Controll */

    DMA_InitStructure.DMA_Channel = DMA_Channel_0;

    DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&(ADC1->DR);

    DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)DataBuffer;

    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;

    DMA_InitStructure.DMA_BufferSize = BUFFERSIZE;

    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_Mode = DMA_Mode_Normal;

    DMA_InitStructure.DMA_Priority = DMA_Priority_High;

    DMA_InitStructure.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(DMA2_Stream0, &DMA_InitStructure);

    /* ADC */

    ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;

    ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div8;

    ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;

    ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;

    ADC_CommonInit(&ADC_CommonInitStructure);

    ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;

    ADC_InitStructure.ADC_ScanConvMode = DISABLE;

    ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;

    ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Rising;

    ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T2_TRGO;

    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;

    ADC_InitStructure.ADC_NbrOfConversion = 1;

    ADC_Init(ADC1, &ADC_InitStructure);

    ADC_EOCOnEachRegularChannelCmd(ADC1, ENABLE);

    ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 1, ADC_SampleTime_3Cycles);

    DMA_Cmd(DMA2_Stream0, ENABLE);

    ADC_Cmd(ADC1, ENABLE);

    ADC_DMACmd(ADC1, ENABLE);

    ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);

    TIM_Cmd(TIM2, ENABLE);

}

void Set_DataCounter ( uint16_t Value )

{

  DMA_ClearITPendingBit(DMA2_Stream0,DMA_IT_TCIF0);

  DMA_ClearITPendingBit(DMA2_Stream0,DMA_IT_HTIF0);

  DMA_ClearITPendingBit(DMA2_Stream0,DMA_IT_TEIF0);

  DMA_ClearITPendingBit(DMA2_Stream0,DMA_IT_DMEIF0);

  DMA_ClearITPendingBit(DMA2_Stream0,DMA_IT_FEIF0);

  // Disable DMA Stream

        DMA_Cmd(DMA2_Stream0, DISABLE);

  // Clear Interrupt Flag

  DMA_ClearFlag(DMA2_Stream0, DMA_FLAG_TCIF0);

  DMA_ClearFlag(DMA2_Stream0, DMA_FLAG_HTIF0);

  DMA_ClearFlag(DMA2_Stream0, DMA_FLAG_TEIF0);

  DMA_ClearFlag(DMA2_Stream0, DMA_FLAG_DMEIF0);

  DMA_ClearFlag(DMA2_Stream0, DMA_FLAG_FEIF0);

  // Set new Countervalue

  DMA_SetCurrDataCounter(DMA2_Stream0,Value);

  // Enable DMA Stream

  DMA_Cmd(DMA2_Stream0, ENABLE);

}