ADC with DMA and 3 Channels

Streitler · ‎2024-04-17

i'm trying to get a 3 channel dma up and running on my u5, but unfortunately i keep getting the error handler at line 122 that the a/d can't start via dma. do i need to do something additional here or not? i've already clicked through some posts and tried to configure my a/d directly, but unfortunately that didn't quite work. i'm currently working on a stmu599.


//==========================================================================
// DEFINES
#define DEBUG_DRV_adc
#if defined (DEBUG) && defined (DEBUG_DRV_GPDMA)
#define DBG(format, ...) printf("drv_adc: " format "\n", ##__VA_ARGS__)
#else
#define DBG(...)
#endif
//==========================================================================
// TYPEDEFS
//==========================================================================
// VARIABLES
ADC_HandleTypeDef hadc1;
DMA_NodeTypeDef Node_GPDMA1_Channel6;
DMA_QListTypeDef List_GPDMA1_Channel6;
DMA_HandleTypeDef handle_GPDMA1_Channel6;
 
 
static uint32_t ADCvalue[3];  // to store the adc values
 
static bool initialized = false;
//==========================================================================
// PROTOTYPES
//==========================================================================
// FUNCTIONS
void drv_ADC1_Init(void)
{
if(initialized)
{
return;
}
  /* USER CODE BEGIN ADC1_Init 0 */
 
  /* USER CODE END ADC1_Init 0 */
 
  ADC_ChannelConfTypeDef sConfig = {0};
 
  /* USER CODE BEGIN ADC1_Init 1 */
 
  /* USER CODE END ADC1_Init 1 */
 
  /** Common config
  */
  hadc1.Instance = ADC1;
  hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV4;
  hadc1.Init.Resolution = ADC_RESOLUTION_12B;
  hadc1.Init.GainCompensation = 0;
  hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc1.Init.ScanConvMode = ADC_SCAN_ENABLE;
  hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
  hadc1.Init.LowPowerAutoWait = DISABLE;
  hadc1.Init.ContinuousConvMode = ENABLE;
  hadc1.Init.NbrOfConversion = 3;
  hadc1.Init.DiscontinuousConvMode = DISABLE;
  hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
  hadc1.Init.DMAContinuousRequests = DISABLE;
  hadc1.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_LOW;
  hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED;
  hadc1.Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE;
  hadc1.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DMA_CIRCULAR;
  hadc1.Init.OversamplingMode = DISABLE;
  if (HAL_ADC_Init(&hadc1) != HAL_OK)
  {
    Error_Handler();
  }
 
  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_5;
  sConfig.Rank = ADC_REGULAR_RANK_1;
  sConfig.SamplingTime = ADC_SAMPLETIME_5CYCLE;
  sConfig.SingleDiff = ADC_SINGLE_ENDED;
  sConfig.OffsetNumber = ADC_OFFSET_NONE;
  sConfig.Offset = 0;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
 
  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_7;
  sConfig.Rank = ADC_REGULAR_RANK_2;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
 
  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_17;
  sConfig.Rank = ADC_REGULAR_RANK_3;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_ADCEx_Calibration_Start(&hadc1, ADC_CALIB_OFFSET_LINEARITY, ADC_SINGLE_ENDED) !=HAL_OK)
  {
    Error_Handler();
  }
 
  initialized = true;
 
}
//==========================================================================
void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{
 
GPIO_InitTypeDef GPIO_InitStruct = {0};
  DMA_NodeConfTypeDef NodeConfig= {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
  if(adcHandle->Instance==ADC1)
  {
  /* USER CODE BEGIN ADC1_MspInit 0 */
 
  /* USER CODE END ADC1_MspInit 0 */
 
  /** Initializes the peripherals clock
  */
    PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADCDAC;
    PeriphClkInit.AdcDacClockSelection = RCC_ADCDACCLKSOURCE_HSI;
    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
    {
      Error_Handler();
    }
 
    /* ADC1 clock enable */
    __HAL_RCC_ADC12_CLK_ENABLE();
 
    __HAL_RCC_GPIOA_CLK_ENABLE();
    __HAL_RCC_GPIOB_CLK_ENABLE();
    /**ADC1 GPIO Configuration
    PA0     ------> ADC1_IN5
    PA2     ------> ADC1_IN7
    PB2     ------> ADC1_IN17
    */
    GPIO_InitStruct.Pin = ADC_VUNREG_Pin|ADC_VIN_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
    GPIO_InitStruct.Pin = ADC_VBUS_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(ADC_VBUS_GPIO_Port, &GPIO_InitStruct);
 
    /* ADC1 DMA Init */
    /* GPDMA1_REQUEST_ADC1 Init */
    NodeConfig.NodeType = DMA_GPDMA_LINEAR_NODE;
    NodeConfig.Init.Request = GPDMA1_REQUEST_ADC1;
    NodeConfig.Init.BlkHWRequest = DMA_BREQ_SINGLE_BURST;
    NodeConfig.Init.Direction = DMA_PERIPH_TO_MEMORY;
    NodeConfig.Init.SrcInc = DMA_SINC_FIXED;
    NodeConfig.Init.DestInc = DMA_DINC_INCREMENTED;
    NodeConfig.Init.SrcDataWidth = DMA_SRC_DATAWIDTH_WORD;
    NodeConfig.Init.DestDataWidth = DMA_DEST_DATAWIDTH_WORD;
    NodeConfig.Init.SrcBurstLength = 1;
    NodeConfig.Init.DestBurstLength = 1;
    NodeConfig.Init.TransferAllocatedPort = DMA_SRC_ALLOCATED_PORT0|DMA_DEST_ALLOCATED_PORT1;
    NodeConfig.Init.TransferEventMode = DMA_TCEM_BLOCK_TRANSFER;
    NodeConfig.Init.Mode = DMA_NORMAL;
    NodeConfig.TriggerConfig.TriggerPolarity = DMA_TRIG_POLARITY_MASKED;
    NodeConfig.DataHandlingConfig.DataExchange = DMA_EXCHANGE_NONE;
    NodeConfig.DataHandlingConfig.DataAlignment = DMA_DATA_RIGHTALIGN_ZEROPADDED;
  if (HAL_DMAEx_List_BuildNode(&NodeConfig, &Node_GPDMA1_Channel6) != HAL_OK)
    {
      Error_Handler();
    }
 
    if (HAL_DMAEx_List_InsertNode(&List_GPDMA1_Channel6, NULL, &Node_GPDMA1_Channel6) != HAL_OK)
    {
      Error_Handler();
    }
 
    if (HAL_DMAEx_List_SetCircularMode(&List_GPDMA1_Channel6) != HAL_OK)
    {
      Error_Handler();
    }
 
    handle_GPDMA1_Channel6.Instance = GPDMA1_Channel6;
    handle_GPDMA1_Channel6.InitLinkedList.Priority = DMA_LOW_PRIORITY_LOW_WEIGHT;
    handle_GPDMA1_Channel6.InitLinkedList.LinkStepMode = DMA_LSM_FULL_EXECUTION;
    handle_GPDMA1_Channel6.InitLinkedList.LinkAllocatedPort = DMA_LINK_ALLOCATED_PORT0;
    handle_GPDMA1_Channel6.InitLinkedList.TransferEventMode = DMA_TCEM_BLOCK_TRANSFER;
    handle_GPDMA1_Channel6.InitLinkedList.LinkedListMode = DMA_LINKEDLIST_CIRCULAR;
    if (HAL_DMAEx_List_Init(&handle_GPDMA1_Channel6) != HAL_OK)
    {
      Error_Handler();
    }
 
    if (HAL_DMAEx_List_LinkQ(&handle_GPDMA1_Channel6, &List_GPDMA1_Channel6) != HAL_OK)
    {
      Error_Handler();
    }
 
    __HAL_LINKDMA(adcHandle, DMA_Handle, handle_GPDMA1_Channel6);
 
    if (HAL_DMA_ConfigChannelAttributes(&handle_GPDMA1_Channel6, DMA_CHANNEL_NPRIV) != HAL_OK)
    {
      Error_Handler();
    }
    HAL_NVIC_SetPriority(ADC1_2_IRQn, 5, 0);
    HAL_NVIC_EnableIRQ(ADC1_2_IRQn);
  /* USER CODE BEGIN ADC1_MspInit 1 */
 
  /* USER CODE END ADC1_MspInit 1 */
  }
}
//==========================================================================
void HAL_ADC_MspDeInit(ADC_HandleTypeDef* adcHandle)
{
 
  if(adcHandle->Instance==ADC1)
  {
    /* Peripheral clock disable */
    __HAL_RCC_ADC12_CLK_DISABLE();
 
    /**ADC1 GPIO Configuration
    PA0     ------> ADC1_IN5
    PA2     ------> ADC1_IN7
    PB2     ------> ADC1_IN17
    */
    HAL_GPIO_DeInit(GPIOA, ADC_VUNREG_Pin|ADC_VIN_Pin);
 
    HAL_GPIO_DeInit(ADC_VBUS_GPIO_Port, ADC_VBUS_Pin);
 
    /* ADC1 DMA DeInit */
    HAL_DMA_DeInit(adcHandle->DMA_Handle);
  }
}
//==========================================================================
void drv_ADC_Start ()
{
if(HAL_OK != HAL_ADC_Start_DMA(&hadc1, ADCvalue, 3))
{
DBG( "DMA Start ERROR", result );
Error_Handler();
}
DBG( "ADC DMA Start", result );
 
}
//==========================================================================

Christian N · ‎2024-04-19

This post has been escalated to the ST Online Support Team for additional assistance. We'll contact you directly.