MCU freezes when starting ADC in DMA mode

AKons · ‎2019-09-14

Hello,

i want to start an ADC in DMA Mode, but everytime i run HAL_ADC_Start_DMA the MCU stops.

Here is the section of my code where it happens:

if(newpwmperiod == 1 && adc_dma_status == 0){
        HAL_UART_Transmit(&huart2, test, 4, HAL_MAX_DELAY);
	HAL_ADC_Start_DMA(&hadc1, (uint32_t*)adc_signal, cos_pointsperperiod);
	adc_dma_status = 1;
	HAL_UART_Transmit(&huart2, test, 4, HAL_MAX_DELAY);
 
	  }

The first HAL_UART_Transmit works, but the second after the HAL_ADC_Start_DMA doesn't.

here are my configurations generated by mxcube:

/**
  ******************************************************************************
  * File Name          : ADC.c
  * Description        : This file provides code for the configuration
  *                      of the ADC instances.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
 
/* Includes ------------------------------------------------------------------*/
#include "adc.h"
 
/* USER CODE BEGIN 0 */
 
/* USER CODE END 0 */
 
ADC_HandleTypeDef hadc1;
DMA_HandleTypeDef hdma_adc1;
 
/* ADC1 init function */
void MX_ADC1_Init(void)
{
  ADC_ChannelConfTypeDef sConfig = {0};
 
  /** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion) 
  */
  hadc1.Instance = ADC1;
  hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
  hadc1.Init.Resolution = ADC_RESOLUTION_12B;
  hadc1.Init.ScanConvMode = DISABLE;
  hadc1.Init.ContinuousConvMode = DISABLE;
  hadc1.Init.DiscontinuousConvMode = DISABLE;
  hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING;
  hadc1.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T2_TRGO;
  hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc1.Init.NbrOfConversion = 1;
  hadc1.Init.DMAContinuousRequests = DISABLE;
  hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
  if (HAL_ADC_Init(&hadc1) != HAL_OK)
  {
    Error_Handler();
  }
  /** Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time. 
  */
  sConfig.Channel = ADC_CHANNEL_1;
  sConfig.Rank = 1;
  sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
 
}
 
void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{
 
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(adcHandle->Instance==ADC1)
  {
  /* USER CODE BEGIN ADC1_MspInit 0 */
 
  /* USER CODE END ADC1_MspInit 0 */
    /* ADC1 clock enable */
    __HAL_RCC_ADC1_CLK_ENABLE();
  
    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**ADC1 GPIO Configuration    
    PA1     ------> ADC1_IN1 
    */
    GPIO_InitStruct.Pin = GPIO_PIN_1;
    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
    /* ADC1 DMA Init */
    /* ADC1 Init */
    hdma_adc1.Instance = DMA2_Stream0;
    hdma_adc1.Init.Channel = DMA_CHANNEL_0;
    hdma_adc1.Init.Direction = DMA_PERIPH_TO_MEMORY;
    hdma_adc1.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_adc1.Init.MemInc = DMA_MINC_ENABLE;
    hdma_adc1.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
    hdma_adc1.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
    hdma_adc1.Init.Mode = DMA_NORMAL;
    hdma_adc1.Init.Priority = DMA_PRIORITY_LOW;
    hdma_adc1.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
    if (HAL_DMA_Init(&hdma_adc1) != HAL_OK)
    {
      Error_Handler();
    }
 
    __HAL_LINKDMA(adcHandle,DMA_Handle,hdma_adc1);
 
  /* USER CODE BEGIN ADC1_MspInit 1 */
 
  /* USER CODE END ADC1_MspInit 1 */
  }
}
 
void HAL_ADC_MspDeInit(ADC_HandleTypeDef* adcHandle)
{
 
  if(adcHandle->Instance==ADC1)
  {
  /* USER CODE BEGIN ADC1_MspDeInit 0 */
 
  /* USER CODE END ADC1_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_ADC1_CLK_DISABLE();
  
    /**ADC1 GPIO Configuration    
    PA1     ------> ADC1_IN1 
    */
    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_1);
 
    /* ADC1 DMA DeInit */
    HAL_DMA_DeInit(adcHandle->DMA_Handle);
  /* USER CODE BEGIN ADC1_MspDeInit 1 */
 
  /* USER CODE END ADC1_MspDeInit 1 */
  }
} 
 
/* USER CODE BEGIN 1 */
 
/* USER CODE END 1 */
 
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

/**
  ******************************************************************************
  * File Name          : TIM.c
  * Description        : This file provides code for the configuration
  *                      of the TIM instances.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
 
/* Includes ------------------------------------------------------------------*/
#include "tim.h"
 
/* USER CODE BEGIN 0 */
 
/* USER CODE END 0 */
 
TIM_HandleTypeDef htim2;
DMA_HandleTypeDef hdma_tim2_ch1;
 
/* TIM2 init function */
void MX_TIM2_Init(void)
{
  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};
  TIM_OC_InitTypeDef sConfigOC = {0};
 
  htim2.Instance = TIM2;
  htim2.Init.Prescaler = 0;
  htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim2.Init.Period = 512-1;
  htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
  {
    Error_Handler();
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_Init(&htim2) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigOC.OCMode = TIM_OCMODE_PWM1;
  sConfigOC.Pulse = 0;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
  if (HAL_TIM_PWM_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  HAL_TIM_MspPostInit(&htim2);
 
}
 
void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* tim_baseHandle)
{
 
  if(tim_baseHandle->Instance==TIM2)
  {
  /* USER CODE BEGIN TIM2_MspInit 0 */
 
  /* USER CODE END TIM2_MspInit 0 */
    /* TIM2 clock enable */
    __HAL_RCC_TIM2_CLK_ENABLE();
  
    /* TIM2 DMA Init */
    /* TIM2_CH1 Init */
    hdma_tim2_ch1.Instance = DMA1_Stream5;
    hdma_tim2_ch1.Init.Channel = DMA_CHANNEL_3;
    hdma_tim2_ch1.Init.Direction = DMA_MEMORY_TO_PERIPH;
    hdma_tim2_ch1.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_tim2_ch1.Init.MemInc = DMA_MINC_ENABLE;
    hdma_tim2_ch1.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
    hdma_tim2_ch1.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
    hdma_tim2_ch1.Init.Mode = DMA_CIRCULAR;
    hdma_tim2_ch1.Init.Priority = DMA_PRIORITY_LOW;
    hdma_tim2_ch1.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
    if (HAL_DMA_Init(&hdma_tim2_ch1) != HAL_OK)
    {
      Error_Handler();
    }
 
    __HAL_LINKDMA(tim_baseHandle,hdma[TIM_DMA_ID_CC1],hdma_tim2_ch1);
 
  /* USER CODE BEGIN TIM2_MspInit 1 */
 
  /* USER CODE END TIM2_MspInit 1 */
  }
}
void HAL_TIM_MspPostInit(TIM_HandleTypeDef* timHandle)
{
 
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(timHandle->Instance==TIM2)
  {
  /* USER CODE BEGIN TIM2_MspPostInit 0 */
 
  /* USER CODE END TIM2_MspPostInit 0 */
  
    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**TIM2 GPIO Configuration    
    PA0-WKUP     ------> TIM2_CH1 
    */
    GPIO_InitStruct.Pin = GPIO_PIN_0;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF1_TIM2;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
  /* USER CODE BEGIN TIM2_MspPostInit 1 */
 
  /* USER CODE END TIM2_MspPostInit 1 */
  }
 
}
 
void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* tim_baseHandle)
{
 
  if(tim_baseHandle->Instance==TIM2)
  {
  /* USER CODE BEGIN TIM2_MspDeInit 0 */
 
  /* USER CODE END TIM2_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_TIM2_CLK_DISABLE();
 
    /* TIM2 DMA DeInit */
    HAL_DMA_DeInit(tim_baseHandle->hdma[TIM_DMA_ID_CC1]);
  /* USER CODE BEGIN TIM2_MspDeInit 1 */
 
  /* USER CODE END TIM2_MspDeInit 1 */
  }
} 
 
/* USER CODE BEGIN 1 */
 
/* USER CODE END 1 */
 
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

I hope you can help me.