STM32F4 + Timer 3 + DMA1 schreibt nicht ins ODR => TEIF

#include "stm32f4xx.h"

#include "stm32f4xx_tim.h"

#include "stm32f4xx_dma.h"

// togglet Pin 5 bei jedem CC4 Event

uint16_t LED_PIN_SET[10] = { GPIO_Pin_5, 0x0000,

                             GPIO_Pin_5, 0x0000,

                             GPIO_Pin_5, 0x0000,

                             GPIO_Pin_5, 0x0000,

                             GPIO_Pin_5, 0x0000 };

void TIM3_Config()

{

  TIM_TimeBaseInitTypeDef    TIM_TimeBaseStructure;

  DMA_InitTypeDef       DMA_InitStructure;

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);

  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE);

  TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);

  TIM_TimeBaseStructure.TIM_Period = 42000-1; // 1Hz

  TIM_TimeBaseStructure.TIM_Prescaler = 1000-1; // 42 kHz

  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;

  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;

  TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

  TIM_SetCompare4(TIM3,41999);

  TIM_DMAConfig(TIM3,TIM_DMABase_SR,TIM_DMABurstLength_1Transfer);

  TIM_DMACmd(TIM3,TIM_DMA_CC4,ENABLE);

  DMA_InitStructure.DMA_Channel = DMA_Channel_5;

  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&(GPIOE->ODR);

  DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&LED_PIN_SET;

  DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToMemory;

  DMA_InitStructure.DMA_BufferSize = 10;

  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Enable;

  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_Priority = DMA_Priority_VeryHigh;

  DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;

  DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;

  DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;

  DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;

  DMA_Init(DMA1_Stream2, &DMA_InitStructure);

  DMA_Cmd(DMA1_Stream2, ENABLE);

  //TIM_Cmd(TIM3, ENABLE);

}

void init_gpio( void ) {

  GPIO_InitTypeDef      GPIO_InitStructure;

  RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_GPIOE, ENABLE);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_25MHz;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;

  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;

  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

  GPIO_Init(GPIOE, &GPIO_InitStructure);

}

int main( void ) {

    uint32_t i;

    i = 0;

    SystemInit();

    RCC_ClocksTypeDef rcctdef;

    RCC_GetClocksFreq(&rcctdef);

    init_gpio();

    TIM3_Config();

    TIM_Cmd(TIM3, ENABLE);

    while(1) {

         i++;

    }

    // sollte nicht erreicht werden

    return 1;

}