HAL ADC stm32F7

[Joel (Gast)]

Hallo zusammen

Zuerst, tut mir leid wenn es schon einen solchen beitrag gibt.

Nun zu meinem Problem. Ich bin zu unfähig den ADC auf dem 
STM32F746G-DIDCO Board auszulesen.

Hier mein momentaner Code:

/**
  ******************************************************************************
  * @file    ADC/ADC_RegularConversion_DMA/Src/main.c
  * @author  MCD Application Team
  * @brief   This example describes how to use the DMA to transfer
  *          continuously converted data.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
  *
  * 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 "main.h"
#include "stm32f7xx.h"
#include "stm32746g_discovery.h"
#include "stm32746g_discovery_lcd.h"

/** @addtogroup STM32F7xx_HAL_Examples
  * @{
  */

/** @addtogroup ADC_RegularConversion_DMA
  * @{
  */

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* ADC handler declaration */
ADC_HandleTypeDef    AdcHandle;

/* Variable used to get converted value */
__IO uint16_t uhADCxConvertedValue = 0;

/* Private function prototypes -----------------------------------------------*/
static void SystemClock_Config(void);
static void Error_Handler(void);
static void MPU_Config(void);
static void CPU_CACHE_Enable(void);

/* Private functions ---------------------------------------------------------*/

#define LCD_FRAME_BUFFER          SDRAM_DEVICE_ADDR
#define RGB565_BYTE_PER_PIXEL     2
#define ARBG8888_BYTE_PER_PIXEL   4

/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
int main(void)
{
  ADC_ChannelConfTypeDef sConfig;

  MPU_Config();
  CPU_CACHE_Enable();
  HAL_Init();
  SystemClock_Config();

  // Set up the LCD
  BSP_LCD_Init();
  BSP_LCD_LayerDefaultInit(LTDC_ACTIVE_LAYER, LCD_FRAME_BUFFER);
  BSP_LCD_SetLayerVisible(LTDC_ACTIVE_LAYER, ENABLE);
  BSP_LCD_SelectLayer(LTDC_ACTIVE_LAYER);
  BSP_LCD_Clear(LCD_COLOR_BLACK);
  BSP_LCD_SetBackColor(LCD_COLOR_BLACK);
  BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
  BSP_LCD_DisplayOn();


  /*##-1- Configure the ADC peripheral #######################################*/
  AdcHandle.Instance          = ADCx;
  AdcHandle.Init.ClockPrescaler        = ADC_CLOCKPRESCALER_PCLK_DIV4;
  AdcHandle.Init.Resolution            = ADC_RESOLUTION_12B;
  AdcHandle.Init.ScanConvMode          = DISABLE;                       /* Sequencer disabled (ADC conversion on only 1 channel: channel set on rank 1) */
  AdcHandle.Init.ContinuousConvMode    = ENABLE;                       /* Continuous mode enabled to have continuous conversion  */
  AdcHandle.Init.DiscontinuousConvMode = DISABLE;                       /* Parameter discarded because sequencer is disabled */
  AdcHandle.Init.NbrOfDiscConversion   = 0;
  AdcHandle.Init.ExternalTrigConvEdge  = ADC_EXTERNALTRIGCONVEDGE_NONE;        /* Conversion start trigged at each external event */
  AdcHandle.Init.ExternalTrigConv      = ADC_EXTERNALTRIGCONV_T1_CC1;
  AdcHandle.Init.DataAlign             = ADC_DATAALIGN_RIGHT;
  AdcHandle.Init.NbrOfConversion       = 1;
  AdcHandle.Init.DMAContinuousRequests = ENABLE;
  AdcHandle.Init.EOCSelection          = DISABLE;

  if (HAL_ADC_Init(&AdcHandle) != HAL_OK)
  {
    /* ADC initialization Error */
    Error_Handler();
  }

  /*##-2- Configure ADC regular channel ######################################*/
  sConfig.Channel      = ADC_CHANNEL_0;
  sConfig.Rank         = 1;
  sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
  sConfig.Offset       = 0;

  if (HAL_ADC_ConfigChannel(&AdcHandle, &sConfig) != HAL_OK)
  {
    /* Channel Configuration Error */
    Error_Handler();
  }

  /*##-3- Start the conversion process #######################################*/
  //HAL_ADC_Start_DMA(&AdcHandle, (uint32_t*)&uhADCxConvertedValue, 1);
  HAL_ADC_Start(&AdcHandle);

  /* Infinite loop*/
  while (1)
  {
    uint8_t value = AdcHandle.State;
    //uint32_t *pointer = value;

    char buffer[30];
    sprintf(buffer, "HELLO WORLD!");
    BSP_LCD_DisplayStringAtLine(0, (uint32_t *) value);
  }
}

/**
  * @brief  System Clock Configuration
  *         The system Clock is configured as follow : 
  *            System Clock source            = PLL (HSE)
  *            SYSCLK(Hz)                     = 216000000
  *            HCLK(Hz)                       = 216000000
  *            AHB Prescaler                  = 1
  *            APB1 Prescaler                 = 4
  *            APB2 Prescaler                 = 2
  *            HSE Frequency(Hz)              = 25000000
  *            PLL_M                          = 25
  *            PLL_N                          = 432
  *            PLL_P                          = 2
  *            PLL_Q                          = 9
  *            VDD(V)                         = 3.3
  *            Main regulator output voltage  = Scale1 mode
  *            Flash Latency(WS)              = 7
  * @param  None
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_ClkInitTypeDef RCC_ClkInitStruct;
  RCC_OscInitTypeDef RCC_OscInitStruct;
  HAL_StatusTypeDef ret = HAL_OK;

  /* Enable HSE Oscillator and activate PLL with HSE as source */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 25;
  RCC_OscInitStruct.PLL.PLLN = 432;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 9;
  
  ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
  if(ret != HAL_OK)
  {
    while(1) { ; }
  }
  
  /* Activate the OverDrive to reach the 216 MHz Frequency */  
  ret = HAL_PWREx_EnableOverDrive();
  if(ret != HAL_OK)
  {
    while(1) { ; }
  }
  
  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */
  RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;  
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; 
  
  ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7);
  if(ret != HAL_OK)
  {
    while(1) { ; }
  }  
}

/**
  * @brief  This function is executed in case of error occurrence.
  * @param  None
  * @retval None
  */
static void Error_Handler(void)
{
  while (1)
  {
    /* LED1 blinks */
    BSP_LED_Toggle(LED1);
    HAL_Delay(20);
  }
}

static void MPU_Config(void)
{
  MPU_Region_InitTypeDef MPU_InitStruct;

  /* Disable the MPU */
  HAL_MPU_Disable();

  /* Configure the MPU attributes as WT for SRAM */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress = 0x20010000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_256KB;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.SubRegionDisable = 0x00;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  /* Enable the MPU */
  HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
}

/**
  * @brief  Conversion complete callback in non blocking mode
  * @param  AdcHandle : AdcHandle handle
  * @note   This example shows a simple way to report end of conversion, and
  *         you can add your own implementation.
  * @retval None
  */
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* AdcHandle)
{
  /* Turn LED1 on: Transfer process is correct */
  BSP_LED_On(LED1);
}

/**
  * @brief  CPU L1-Cache enable.
  * @param  None
  * @retval None
  */
static void CPU_CACHE_Enable(void)
{
  /* Enable I-Cache */
  SCB_EnableICache();

  /* Enable D-Cache */
  SCB_EnableDCache();
}

#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 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) */

  /* Infinite loop */
  while (1)
  {
  }
}
#endif

/**
  * @}
  */

/**
  * @}
  */

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

Ja ich bin ein anfänger und sollte nicht so hoch einsteigen, hab aber 
den Auftrag bekommen sowas zu machen. Wenn ihr noch eine Datei braucht 
einfach Fragen und ich lad sie hoch.

P.S. ich habe auch HAL_ADC_getValue(&AdcHandle)gebraucht.

Danke und Gruss
Joel

[nico_2010 (Gast)]

Hello,

I don't use STM32F7 series microcontroller (only STM32F4 and F3) but 
what I do not observe is:
- Timer1 initialization
you should use Timer1 channel 1 set to Output Compare no output and - in 
Timer1 configuration tab - you should activate Trigger output Parameters 
to "Enable Master/Slave Mode" to Enable and, on next row, Trigger Event 
Selection, to Output Compare (OC1REF). See picture.

 - Triggering edge selected into ADC1 Configuration
you should select rising edge for trigger detection. See picture

[Patrick S. (pad)]

Moin,

ich habe bisher ADC auch nur auf einem F4 benutzt, sollte aber 
eigentlich ähnlich sein.
Du möchtest den ADC ja im Interrupt-Modus benutzten. Interrupts sind 
dafür richtig konfiguriert?
Und statt HAL_ADC_Start(&AdcHandle); brauchst du dann auch eigentlich 
HAL_ADC_Start_IT(&AdcHandle);

Gruß