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2 years, 1 month ago.

STM32f411RE-Nucleo. Trying to get DMA working with ADC. DMA has an initialization error.

Main.h ADC with DMA transfer to memory

/**
  ******************************************************************************
  * File Name          : main.c
  * Description        : Main program body
  ******************************************************************************
  *
  * COPYRIGHT(c) 2017 STMicroelectronics
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */
/* Includes ------------------------------------------------------------------*/
//#include "stm32f4xx_hal.h"
#include "mbed.h"

/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private variables ---------------------------------------------------------*/
ADC_HandleTypeDef   hadc1;
DMA_HandleTypeDef   hdma_adc1;
GPIO_InitTypeDef    GPIO_InitStruct;

Serial pc(SERIAL_TX, SERIAL_RX);

/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
void Error_Handler(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_ADC1_Init(void);

/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
uint32_t ADC1ConvertedValues[1024];
/* USER CODE END PFP */

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

int main(void)
{
    pc.printf("Main is Starting\n");
    /* USER CODE BEGIN 1 */

    /* USER CODE END 1 */

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

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

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

    /* Initialize all configured peripherals */
    MX_GPIO_Init();
    MX_DMA_Init();
    MX_ADC1_Init();

    pc.printf("DMA and ADC Init'd\n");

    /* USER CODE BEGIN 2 */
    // -- Enables ADC and starts conversion of the regular channels.
    if( HAL_ADC_Start(&hadc1) != HAL_OK) {
        pc.printf("ADC Start Error\n");
        return 0;
    }
    pc.printf("ADC Start Ok\n");
    // -- Enables ADC DMA request
    if (HAL_ADC_Start_DMA(&hadc1, (uint32_t*)ADC1ConvertedValues, 2048) != HAL_OK) {
        pc.printf("DMA Start Error\n");
        return 0;
    }
    pc.printf("DMA Start Ok\n");
    pc.printf("Main read to loop\n");
    /* USER CODE END 2 */

    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while (1) {
        /* USER CODE END WHILE */
        for (int i=0; i<2049; i++) {
            pc.printf("Analog Buffer Values %d\n",ADC1ConvertedValues[i]);
        }
        /* USER CODE BEGIN 3 */

    }
    /* USER CODE END 3 */

}

/** System Clock Configuration
*/
void SystemClock_Config(void)
{

    RCC_OscInitTypeDef RCC_OscInitStruct;
    RCC_ClkInitTypeDef RCC_ClkInitStruct;

    __HAL_RCC_PWR_CLK_ENABLE();

    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    RCC_OscInitStruct.HSICalibrationValue = 16;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
    RCC_OscInitStruct.PLL.PLLM = 16;
    RCC_OscInitStruct.PLL.PLLN = 336;
    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
    RCC_OscInitStruct.PLL.PLLQ = 4;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
        Error_Handler();
    }

    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                                  |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) {
        Error_Handler();
    }

    HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

    HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

    /* SysTick_IRQn interrupt configuration */
    HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
    pc.printf("Sys Init Done\n");
}

/* ADC1 init function */
static void MX_ADC1_Init(void)
{
    pc.printf("ADC Init\n");
    ADC_ChannelConfTypeDef sConfig;
    ADC_InjectionConfTypeDef sConfigInjected;

    /**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 = ENABLE;
    hadc1.Init.ContinuousConvMode = ENABLE;
    hadc1.Init.DiscontinuousConvMode = DISABLE;
    hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
    hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
    hadc1.Init.NbrOfConversion = 4;
    hadc1.Init.DMAContinuousRequests = ENABLE;
    hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
    if (HAL_ADC_Init(&hadc1) != HAL_OK) {
        Error_Handler();
    }
    pc.printf("ADC Config'd\n");
    /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
    */
    sConfig.Channel = ADC_CHANNEL_0;
    sConfig.Rank = 1;
    sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
    if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) {
        pc.printf("ADC Error ch0\n");
        Error_Handler();
    }
    pc.printf("ADC Config ch0\n");
    /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
    */
    sConfig.Channel = ADC_CHANNEL_1;
    sConfig.Rank = 2;
    if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) {
        pc.printf("ADC Error ch1\n");
        Error_Handler();
    }
    pc.printf("ADC Config ch1\n");
    /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
    */
    sConfig.Channel = ADC_CHANNEL_2;
    sConfig.Rank = 3;
    if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) {
        pc.printf("ADC Error ch2\n");
        Error_Handler();
    }
    pc.printf("ADC Config ch2\n");
    /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
    */
    sConfig.Channel = ADC_CHANNEL_3;
    sConfig.Rank = 4;
    if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) {
        pc.printf("ADC Error ch3\n");
        Error_Handler();
    }
    pc.printf("ADC Config ch3\n");
    /**Configures for the selected ADC injected channel its corresponding rank in the sequencer and its sample time
    */
    sConfigInjected.InjectedChannel = ADC_CHANNEL_0;
    sConfigInjected.InjectedRank = 1;
    sConfigInjected.InjectedNbrOfConversion = 1;
    sConfigInjected.InjectedSamplingTime = ADC_SAMPLETIME_3CYCLES;
    sConfigInjected.ExternalTrigInjecConvEdge = ADC_EXTERNALTRIGINJECCONVEDGE_NONE;
    sConfigInjected.AutoInjectedConv = DISABLE;
    sConfigInjected.InjectedDiscontinuousConvMode = DISABLE;
    sConfigInjected.InjectedOffset = 0;
    if (HAL_ADCEx_InjectedConfigChannel(&hadc1, &sConfigInjected) != HAL_OK) {
        pc.printf("ADC Error inject\n");
        Error_Handler();
    }
    pc.printf("ADC Config injected\n");
}

/**
  * Enable DMA controller clock
  */
static void MX_DMA_Init(void)
{
    pc.printf("DMA Init\n");
    /* DMA controller clock enable */
    __HAL_RCC_DMA2_CLK_ENABLE();

    /* DMA interrupt init */
    /* DMA2_Stream0_IRQn interrupt configuration */
    HAL_NVIC_SetPriority(DMA2_Stream0_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn);

}

/** Configure pins as
        * Analog
        * Input
        * Output
        * EVENT_OUT
        * EXTI
*/
static void MX_GPIO_Init(void)
{

//GPIO_InitTypeDef GPIO_InitStruct;

    ///* GPIO Ports Clock Enable */
    __HAL_RCC_GPIOC_CLK_ENABLE();
    __HAL_RCC_GPIOH_CLK_ENABLE();
    __HAL_RCC_GPIOA_CLK_ENABLE();
    __HAL_RCC_GPIOB_CLK_ENABLE();

    /* Configure GPIO pins ******************************************************/
    //GPIO_InitStruct.Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3;// PC0, PC1, PC2, PC3
    //GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;//The pins are configured in analog mode
    //GPIO_InitStruct.Pull = GPIO_NOPULL; ;//We don't need any pull up or pull down
    //GPIO_Init(GPIOC, &GPIO_InitStruct);//Initialize GPIOC pins with the configuration
    //GPIO_InitStruct.GPIO_Pin = GPIO_Pin_1;//PA1
    //HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);//Initialize GPIOA pins with the configuration

}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @param  None
  * @retval None
  */
void Error_Handler(void)
{
    /* USER CODE BEGIN Error_Handler */
    /* User can add his own implementation to report the HAL error return state */
    while(1) {
    }
    pc.printf("ADC Error\n");
    /* USER CODE END Error_Handler */
}

#ifdef USE_FULL_ASSERT

/**
   * @brief Reports the name of the source file and the source line number
   * where the assert_param error has occurred.
   * @param file: pointer to the source file name
   * @param line: assert_param error line source number
   * @retval None
   */
void assert_failed(uint8_t* file, uint32_t line)
{
    /* USER CODE BEGIN 6 */
    /* User can add his own implementation to report the file name and line number,
      ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
    /* USER CODE END 6 */

}

#endif

/**
  * @}
  */

/**
  * @}
*/

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

I don't even know if this is possible. The code comes from QubeMX (saved as MDK v5) and compiles with mbed. But I suspect the DMA is not playing nice with MBED, there's an initialization error. I am trying to make a touch screen much more responsive. I need 20ms updates for the touch screen to work correctly. I must have an interrupt to sense touch, then delay. Then read an average of touch. Then no touch present.

This is where I get a DMA start error.

// -- Enables ADC DMA request
    if (HAL_ADC_Start_DMA(&hadc1, (uint32_t*)ADC1ConvertedValues, 2048) != HAL_OK) {
        pc.printf("DMA Start Error\n");
        return 0;
    }
Comment on this question

1 Answer

2 years, 1 month ago.

Hi. Believe that when you use CubeMX and save as MDK v5 then you have exported the generated code to be compiled with the Keil Compiler v5 only.

http://www2.keil.com/mdk5/

Should compile fine with that tool.

I was trying to get control of the hardware layer of MBED. I kind of thought maybe this wasn't the best way. I will probably try the MBED SDK and see how far I can get with that. Thanks for your response.

posted by Darren Ulrich 18 May 2017

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