[STM32F7]ADC使用timer trigger DAM 没有用

ㄚ明仔

请教各位大大,目前使用STM32F746 想要使用Timer 2 Trigger DMA, 但是设置以后完全不会动作
代码如下是否有大大可以帮忙

ADC设定

DMAU设定

Timer2

[mw_shl_code=c,true]/* ADC3 init function */
static void MX_ADC3_Init(void)
{

    ADC_ChannelConfTypeDef sConfig;

    /**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
    */
    hadc3.Instance = ADC3;
    hadc3.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
    hadc3.Init.Resolution = ADC_RESOLUTION_8B;
    hadc3.Init.ScanConvMode = ADC_SCAN_DISABLE;
    hadc3.Init.ContinuousConvMode = DISABLE;
    hadc3.Init.DiscontinuousConvMode = DISABLE;
    hadc3.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING;
    hadc3.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T2_TRGO;
    hadc3.Init.DataAlign = ADC_DATAALIGN_RIGHT;
    hadc3.Init.NbrOfConversion = 1;
    hadc3.Init.DMAContinuousRequests = ENABLE;
    hadc3.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
    if (HAL_ADC_Init(&hadc3) != HAL_OK)
    {
        _Error_Handler(__FILE__, __LINE__);
    }

    /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
    */
    sConfig.Channel = ADC_CHANNEL_6;
    sConfig.Rank = ADC_REGULAR_RANK_1;
    sConfig.SamplingTime = ADC_SAMPLETIME_28CYCLES;
    if (HAL_ADC_ConfigChannel(&hadc3, &sConfig) != HAL_OK)
    {
        _Error_Handler(__FILE__, __LINE__);
    }

}[/mw_shl_code]



[mw_shl_code=applescript,true]/* TIM2 init function */
static void MX_TIM2_Init(void)
{

    TIM_ClockConfigTypeDef sClockSourceConfig;
    TIM_MasterConfigTypeDef sMasterConfig;

    htim2.Instance = TIM2;
    htim2.Init.Prescaler = 10800;
    htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
    htim2.Init.Period = 100;
    htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
    htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
    if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
    {
        _Error_Handler(__FILE__, __LINE__);
    }

    sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
    if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)
    {
        _Error_Handler(__FILE__, __LINE__);
    }

    sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
    sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
    if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
    {
        _Error_Handler(__FILE__, __LINE__);
    }

}

/**
  * Enable DMA controller clock
  */[/mw_shl_code]


[mw_shl_code=c,true]int main(void)
{
    /* USER CODE BEGIN 1 */

    /* USER CODE END 1 */

    /* MCU Configuration----------------------------------------------------------*/

    /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    HAL_Init();

    /* USER CODE BEGIN Init */

    /* USER CODE END Init */

    /* Configure the system clock */
    SystemClock_Config();

    /* USER CODE BEGIN SysInit */

    /* USER CODE END SysInit */

    /* Initialize all configured peripherals */
    MX_GPIO_Init();
    MX_DMA_Init();
    MX_ADC3_Init();
    MX_TIM2_Init();
    /* USER CODE BEGIN 2 */
    HAL_TIM_Base_Start(&htim2);
    HAL_ADC_Start_DMA(&hadc3, (uint32_t *)AdcValue, 64);
    /* USER CODE END 2 */

    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while (1)
    {

        /* USER CODE END WHILE */

        /* USER CODE BEGIN 3 */

    }
    /* USER CODE END 3 */

}
[/mw_shl_code]

1208

连脉冲值都没看到，参考下这帖子：
http://www.openedv.com/forum.php ... =277863&extra=:)