Question
ADC with DMA and 3 Channels
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 );
}
//==========================================================================