SMT32F407: DMA -> GPIOD

[Markus C. (ljmarkus)]

Hallo...

ich bekomme den DMA nicht ans laufen.
Ich nutzte CooCox 1.7.8 mit GNU Tools ARM Embedded\5.3 2016q1

volatile uint16_t sendbuffer[128];




void init_dma()
{
  static TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
  static DMA_InitTypeDef DMA_InitStructure;
  static NVIC_InitTypeDef NVIC_InitStructure;

  RCC_PCLK1Config(RCC_HCLK_Div1);
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);


  //Clear Flags
  DMA_ClearFlag(DMA2_Stream5, DMA_FLAG_FEIF5 | DMA_FLAG_DMEIF5 | DMA_FLAG_TEIF5 | DMA_FLAG_HTIF5 | DMA_FLAG_TCIF5);

  // DMA2 disable
  DMA_Cmd(DMA2_Stream5, DISABLE);

  DMA_DeInit(DMA2_Stream5);

  DMA_InitStructure.DMA_Channel = DMA_Channel_6;  // Stream 5 Channel 6 is TIM1_TRIG
  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&GPIOD->ODR;
  DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)0;
  DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
  DMA_InitStructure.DMA_BufferSize = 128;
  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_Normal;
  DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
  DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable;
  DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
  DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_INC16;
  DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
  DMA_Init(DMA2_Stream5, &DMA_InitStructure);

  DMA_FlowControllerConfig(DMA2_Stream5, DMA_FlowCtrl_Memory);

  // Timebase
  TIM_TimeBaseStructure.TIM_Period = 1;
  TIM_TimeBaseStructure.TIM_Prescaler = 0;
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Down;
  TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
  TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
  TIM_Cmd(TIM1, ENABLE);

  // Set and enable interrupt
  TIM_DMACmd(TIM1, TIM_DMA_Update, ENABLE);

  // set and enable interrupt
  DMA_ITConfig(DMA2_Stream5, DMA_IT_TC, ENABLE);

  NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream5_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_Init(&NVIC_InitStructure);
}

void start_dma()
{
  DMA2_Stream5->M0AR = (uint32_t)&sendbuffer;
  DMA2->LIFCR = 0b111101;
  DMA2_Stream5->CR |= DMA_SxCR_EN;
  DMA_Cmd(DMA2_Stream5, ENABLE);
}

//----------------------------------------------------------------------------
void DMA2_Stream5_IRQHandler()
{
  DMA2->HIFCR = DMA_HIFCR_CTCIF5;

  GPIOA->BSRRL = GPIO_Pin_9;  // LED ON -> High Pegel
  return;
}

Der DMA soll den "sendbuffer" auf GPIOD ausgeben und dann per IRQ melden 
das er fertig list.
GPIO Pins sind alle als Out und funktionieren auch.

Nur ich bekomme ihn nicht gestartet.

Wo liegt mein Fehler?

Dank, Markus