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TNX Clive1, this works A time out from HAL_ADC_PollForConversion

Question asked by mich.lei on Oct 3, 2017
Latest reply on Oct 6, 2017 by mich.lei

I combined the code from STM32F746 discovery Template and ADC code from Cube for 746 Discovery. Something is missing allthough I checked the code several times. I use ADC3 input 6 because it is connected to a pin of Discovery board.

#include "main.h"
#include <stdio.h>
#include "stm32f7xx_hal.h"
#include "stm32746g_discovery.h"
#include "stm32746g_discovery_lcd.h"
                #include <stdio.h>
               #include <string.h>
               #include <limits.h>
//#include "stm32f7xx_hal.h"
#include <stdlib.h>
#include "stm32746g_discovery_ts.h"

/** @addtogroup STM32F7xx_HAL_Examples
  * @{
  */


/** @addtogroup Templates
  * @{
  */


#include "stm32746g_discovery_lcd.h"

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

double ccc,***;
TS_StateTypeDef TS_State;
DMA2D_HandleTypeDef hdma2d;

I2C_HandleTypeDef hi2c3;

LTDC_HandleTypeDef hltdc;

UART_HandleTypeDef huart1;

DMA_HandleTypeDef hdma_memtomem_dma2_stream0;
SDRAM_HandleTypeDef hsdram1;
ADC_HandleTypeDef hadc1;

UART_HandleTypeDef huart2;
                         char klaa[40];
                         unsigned char plaa[40];
                    volatile int pufkuri[1];
                    volatile char isopuf[10];
                         int c,kokon;
                         volatile int maara;
                         double ccc,***;
static void SystemClock_Config(void);
static void Error_Handler(void);
static void MPU_Config(void);
static void CPU_CACHE_Enable(void);

/* Private functions ---------------------------------------------------------*/
               static void MX_ADC1_Init(void);

int main(void)
{
     uint8_t ggg;
     uint8_t buf=0;
     char texk[33];
      uint16_t x=0, y=0;
  uint8_t str[4]={0,};

  MPU_Config();

  /* Enable the CPU Cache */
  CPU_CACHE_Enable();


  HAL_Init();

    
  /* Configure the System clock to have a frequency of 216 MHz */
  SystemClock_Config();

                    MX_ADC1_Init();

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();

char buffer[30] ;
sprintf(buffer,"hghhhh") ;
BSP_LCD_DisplayStringAtLine(0, (uint8_t *) buffer) ;

     while (1)
  {

          HAL_ADC_Start(&hadc1);
             
        if (HAL_ADC_PollForConversion(&hadc1, 1000) == HAL_OK)
        {
                         kokon = HAL_ADC_GetValue(&hadc1);
                   
        }
        HAL_ADC_Stop(&hadc1);
  sprintf (klaa,"Readout %d", kokon);
  BSP_LCD_DisplayStringAtLine(5, (uint8_t *) klaa) ;
  }

}

               static void MX_ADC1_Init(void)
               {

                    ADC_ChannelConfTypeDef sConfig;

                         /**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
                         */

                    hadc1.Instance = ADC3;
                    //hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2;
                    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_NONE;
                    hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
                    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();
                    }

                    sConfig.Channel = ADC_CHANNEL_6;
                    sConfig.Rank = 1;
                    //sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
                    sConfig.SamplingTime = ADC_SAMPLETIME_15CYCLES;
                    if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
                    {
                         Error_Handler();
                    }

               }

/**
  * @brief  System Clock Configuration

  * @param  None
  * @retval None
  */

static void SystemClock_Config(void)
{
  RCC_ClkInitTypeDef RCC_ClkInitStruct;
  RCC_OscInitTypeDef RCC_OscInitStruct;

  /* Enable HSE Oscillator and activate PLL with HSE as source */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSIState = RCC_HSI_OFF;
  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;
  if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /* activate the OverDrive to reach the 216 Mhz Frequency */
  if(HAL_PWREx_EnableOverDrive() != HAL_OK)
  {
    Error_Handler();
  }
 
  /* 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; 
  if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7) != HAL_OK)
  {
    Error_Handler();
  }
}

/**
  * @brief  This function is executed in case of error occurrence.
  * @param  None
  * @retval None
  */

static void Error_Handler(void)
{
  /* User may add here some code to deal with this error */
  while(1)
  {
          //     BSP_LCD_DisplayStringAtLine(6, (uint8_t *) buffer) ;
  }
}


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);
}

static void CPU_CACHE_Enable(void)
{
  /* Enable I-Cache */
  SCB_EnableICache();

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

#ifdef  USE_FULL_ASSERT

void assert_failed(uint8_t* file, uint32_t line)
{

  while (1)
  {
  }
}
#endif

/**
  * @}
  */


/**
  * @}
  */

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