STM32F7 & OV9655 Kamera Örneği

[Mucit23]

ST'nin kendi yayınlamış olduğu kamera kütüphanesini kullanarak OV9655 kamerayı çalıştırdım.
! No longer available

Kamera olarak STM32F4-Discam kamera modülünü kullandım. STM32F7-Discovery üzerindeki kamera konnektörü doğrudan bu modüle uyumlu.

Main programı aşağıdaki gibi.

/**
  ******************************************************************************
  * @file    Camera/Src/main.c
  * @author  MCD Application Team
  * @version V1.0.2
  * @date    18-November-2015 
  * @brief   
  ******************************************************************************
  * @attention
  */
/* Includes ------------------------------------------------------------------*/
#include "main.h"

/** @addtogroup STM32F7xx_HAL_Examples
  * @{
  */

/** @addtogroup BSP
  * @{
  */

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Global extern variables ---------------------------------------------------*/

  TIM_HandleTypeDef  TimHandle;
	ADC_HandleTypeDef    AdcHandle;
	DMA2D_HandleTypeDef hdma2d_eval;
	
	char Char_Array[30];
/* Variable used to get converted value */
   uint16_t reg_val=0;
	 uint32_t ram_counter;
/* Private function prototypes -----------------------------------------------*/
  static void LCD_LL_ConvertLineToARGB8888(void *pSrc, void *pDst);
	static void LCD_Config(void);
	static void GPIO_Config(void);
	static void SystemClock_Config(void);
	static void CPU_CACHE_Enable(void);
/* Private functions ---------------------------------------------------------*/

/**
  * @brief  Main program
  * @param  None
  * @retval None
  */
 int main(void)
{
	
  CPU_CACHE_Enable();
  /* STM32F7xx HAL library initialization:
       - Configure the Flash prefetch, instruction and Data caches
       - Configure the Systick to generate an interrupt each 1 msec
       - Set NVIC Group Priority to 4
       - Global MSP (MCU Support Package) initialization
     */
  HAL_Init();
  /* Configure the system clock to 200 Mhz */
  SystemClock_Config();

  BSP_LED_Init(LED1);

  /* Configure the User Button in GPIO Mode */
  BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_EXTI);

  /*##-1- Initialize the LCD #################################################*/
  LCD_Config();
	GPIO_Config();

  if(BSP_CAMERA_Init(resolution)==CAMERA_OK)
	{  
	   BSP_LCD_DisplayStringAtLine(1,(uint8_t *)"Camera INIT OK");
		 /* Start the Camera Capture */ 
     BSP_CAMERA_ContinuousStart((uint8_t *)CAMERA_START_ADRES); 
	}
	else
	{
	   BSP_LCD_DisplayStringAtLine(1,(uint8_t *)"Camera INIT ERROR");
	}

  while (1)
  { 
		  BSP_LED_Toggle(LED1);
	    HAL_Delay(100);
  }  
}

/**
  * @brief  Camera line event callback
  * @param  None
  * @retval None
  */
void BSP_CAMERA_LineEventCallback(void)
{
  static uint32_t tmp, tmp2, counter;

  if(ysize > counter)
  {
    LCD_LL_ConvertLineToARGB8888((uint32_t *)(CAMERA_START_ADRES + tmp), (uint32_t *)(LCD_FG_START_ADRES + tmp2));
    tmp  = tmp + xsize*sizeof(uint16_t);
    tmp2 = tmp2 + xsize*sizeof(uint32_t);
    counter++;
  }
  else
  {
    tmp = 0;
    tmp2 = 0;
    counter = 0;
  }
}

/**
  * @brief  Converts a line to an ARGB8888 pixel format.
  * @param  pSrc: Pointer to source buffer
  * @param  pDst: Output color
  * @param  xSize: Buffer width
  * @param  ColorMode: Input color mode
  * @retval None
  */
static void LCD_LL_ConvertLineToARGB8888(void *pSrc, void *pDst)
{
  /* Enable DMA2D clock */
  __HAL_RCC_DMA2D_CLK_ENABLE();

  /* Configure the DMA2D Mode, Color Mode and output offset */
  hdma2d_eval.Init.Mode         = DMA2D_M2M_PFC;
  hdma2d_eval.Init.ColorMode    = DMA2D_ARGB8888;
  hdma2d_eval.Init.OutputOffset = 0;

  /* Foreground Configuration */
  hdma2d_eval.LayerCfg[1].AlphaMode = DMA2D_NO_MODIF_ALPHA;
  hdma2d_eval.LayerCfg[1].InputAlpha = 0xFF;
  hdma2d_eval.LayerCfg[1].InputColorMode = CM_RGB565;
  hdma2d_eval.LayerCfg[1].InputOffset = 0;

  hdma2d_eval.Instance = DMA2D;

  /* DMA2D Initialization */
  if(HAL_DMA2D_Init(&hdma2d_eval) == HAL_OK)
  {
    if(HAL_DMA2D_ConfigLayer(&hdma2d_eval, 1) == HAL_OK)
    {
      if (HAL_DMA2D_Start(&hdma2d_eval, (uint32_t)pSrc, (uint32_t)pDst, xsize, 1) == HAL_OK)
      {
        /* Polling For DMA transfer */
        HAL_DMA2D_PollForTransfer(&hdma2d_eval, 10);
      }
    }
  }
  else
  {
    /* FatFs Initialization Error */
    while(1);
  }
}

/**
  * @brief  LCD configuration
  * @param  None
  * @retval None
  */
static void LCD_Config(void)
{
	
  /* Initialize the LCD */
  BSP_LCD_Init();

	//BSP_LCD_LayerDefaultInit(LTDC_ACTIVE_LAYER, LCD_FRAME_BUFFER);
  /* LCD Initialization */ 
  BSP_LCD_LayerDefaultInit(0, LCD_BG_START_ADRES);
  BSP_LCD_LayerDefaultInit(1, LCD_FG_START_ADRES);

  /* Enable the LCD */ 
  BSP_LCD_DisplayOn(); 
  
  /* Set LCD Foreground Layer  */
  BSP_LCD_SelectLayer(1);

  BSP_LCD_SetFont(&LCD_DEFAULT_FONT);
	  /* Configure the transparency for foreground and background :
     Increase the transparency */
  BSP_LCD_SetTransparency(0, 0);
  BSP_LCD_SetTransparency(1, 255);

  BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
  BSP_LCD_SetTextColor(LCD_COLOR_BLACK);

  /* Clear the LCD */
  BSP_LCD_Clear(LCD_COLOR_RED);

//  /* Display LCD messages */
//  BSP_LCD_DisplayStringAt(0, 10, (uint8_t *)"STM32F746G BSP", CENTER_MODE);
//  BSP_LCD_DisplayStringAt(0, 35, (uint8_t *)"Camera examples", CENTER_MODE);

//  /* Draw Bitmap */
//  //BSP_LCD_DrawBitmap((BSP_LCD_GetXSize() - 80) / 2, 65, (uint8_t *)stlogo);
}

/**
  * @brief  GPIO configuration
  * @param  None
  * @retval None
  */
static void GPIO_Config(void)
{
  GPIO_InitTypeDef  gpio_init_structure;
  __HAL_RCC_GPIOC_CLK_ENABLE();
	__HAL_RCC_GPIOG_CLK_ENABLE();

	  /* Configure the GPIO D0, D1, D2 pin */
    gpio_init_structure.Pin = GPIO_PIN_6 | GPIO_PIN_7;
    gpio_init_structure.Mode = GPIO_MODE_OUTPUT_PP;
    gpio_init_structure.Pull = GPIO_NOPULL;
    gpio_init_structure.Speed = GPIO_SPEED_HIGH;
  
    HAL_GPIO_Init(GPIOC, &gpio_init_structure);
	
	  gpio_init_structure.Pin = GPIO_PIN_6 ;
	  
	  HAL_GPIO_Init(GPIOG, &gpio_init_structure);
}

/**
  * @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                          = 400
  *            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 = 400;  
  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  Check for user input.
  * @param  None
  * @retval Input state (1 : active / 0 : Inactive)
  */
uint8_t CheckForUserInput(void)
{
  if (BSP_PB_GetState(BUTTON_KEY) != RESET)
  {
    HAL_Delay(10);
    while (BSP_PB_GetState(BUTTON_KEY) != RESET);
    return 1 ;
  }
  return 0;
}


/**
  * @brief  CPU L1-Cache enable.
  *         Invalidate Data cache before enabling
  *         Enable Data & Instruction Cache
  * @param  None
  * @retval None
  */
static void CPU_CACHE_Enable(void)
{
  (*(uint32_t *) 0xE000ED94) &= ~0x5;
  (*(uint32_t *) 0xE000ED98) = 0x0; //MPU->RNR
  (*(uint32_t *) 0xE000ED9C) = 0x20010000 |1<<4; //MPU->RBAR
  (*(uint32_t *) 0xE000EDA0) = 0<<28 | 3 <<24 | 0<<19 | 0<<18 | 1<<17 | 0<<16 | 0<<8 | 30<<1 | 1<<0 ; //MPU->RASE  WT
  (*(uint32_t *) 0xE000ED94) = 0x5;

  /* Invalidate I-Cache : ICIALLU register*/
  SCB_InvalidateICache();	
	
  /* Enable branch prediction */
  SCB->CCR |= (1 <<18); 
  __DSB();

  /* Enable I-Cache */
  SCB_EnableICache();	
	
  /* Enable D-Cache */
  SCB_InvalidateDCache();
  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 /* USE_FULL_ASSERT */

/**
  * @}
  */

/**
  * @}
  */

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

main.h

/**
  ******************************************************************************
  * @file    BSP/Inc/main.h 
  * @author  MCD Application Team
  * @version V1.0.2
  * @date    18-November-2015 
  * @brief   Header for main.c module
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2015 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.
  *
  ******************************************************************************
  */
  
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __MAIN_H
#define __MAIN_H

/* Includes ------------------------------------------------------------------*/
#include "stdio.h"
#include "stm32f7xx_hal.h"
#include "stm32746g_discovery.h"
#include "stm32746g_discovery_lcd.h"
#include "stm32746g_discovery_camera.h"

/* Exported constants --------------------------------------------------------*/

#define ARBG8888_BYTE_PER_PIXEL   4
#define LCD_FRAME_SIZE       ((uint32_t)RK043FN48H_WIDTH * RK043FN48H_HEIGHT * ARBG8888_BYTE_PER_PIXEL)
#define LCD_BG_START_ADRES   SDRAM_DEVICE_ADDR
#define LCD_FG_START_ADRES   SDRAM_DEVICE_ADDR + LCD_FRAME_SIZE
#define CAMERA_START_ADRES   SDRAM_DEVICE_ADDR + (LCD_FRAME_SIZE*2)

//#define TEST_RESOLUTION_R160x120
//#define TEST_RESOLUTION_R320x240
#define TEST_RESOLUTION_R480x272
/* The following resolusion is valid only on MB1063 */
/* #define TEST_RESOLUTION_R640x480         */

#if defined(TEST_RESOLUTION_R160x120)
#define resolution      RESOLUTION_R160x120
#define xsize           160
#define ysize           120
#define xoffset         240
#define yoffset         180
#endif

#if defined(TEST_RESOLUTION_R320x240)
#define resolution      RESOLUTION_R320x240
#define xsize           320
#define ysize           240
#define xoffset         80
#define yoffset         16
#endif

#if defined(TEST_RESOLUTION_R480x272)
#define resolution      RESOLUTION_R480x272
#define xsize           480
#define ysize           272
#define xoffset         0
#define yoffset         0
#endif

#if defined(TEST_RESOLUTION_R640x480)
#define resolution      RESOLUTION_R640x480
#define xsize           640
#define ysize           480
#define xoffset         0
#define yoffset         0
#endif

/* Macros --------------------------------------------------------------------*/
#ifdef USE_FULL_ASSERT
/* Assert activated */
#define ASSERT(__condition__)                do { if(__condition__) \
                                                   {  assert_failed(__FILE__, __LINE__); \
                                                      while(1);  \
                                                    } \
                                              }while(0)
#else
/* Assert not activated : macro has no effect */
#define ASSERT(__condition__)                  do { if(__condition__) \
                                                   {  ErrorCounter++; \
                                                    } \
                                              }while(0)
#endif /* USE_FULL_ASSERT */

																							
extern const unsigned char stlogo[];
/* Exported variables ---------------------------------------------------*/

#ifdef USE_FULL_ASSERT
void assert_failed(uint8_t* file, uint32_t line);
#endif
#endif /* __MAIN_H */

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

STM32F7 DCMI donanımında F4'dekinden farklı olarak CROP özelliği eklenmiş. Bu özellik fotoğraf kırpma dediğimiz işe yarıyor.

Normalde OV9655 SXGA(1280×1024), VGA(640x480), QVGA(320x240) ve QQVGA(160x120) boyutlarını destekliyor. Bizim karttaki ekranın boyutu 480x272 Bu yüzden Kamerayı 640x480 çözünürlüğe ayarlayıp görüntünün tam ortasından 480x272'lik bir parça kesiyoruz. Bunu DCMI_CROP Donanımı otomatikmen hallediyor.

main içerisindeki LCD_LL_ConvertLineToARGB8888 fonksiyonu RGB565 formatını ARGB888 formatına çeviriyor. LCD ARGB888 formatında çalışıyor.

Aslında ben bu kamera ile uğraşmıyorum. STM32F4-Discam modülünü sadece bu hazır kodları deneyip sistemin çalışmasını anlamak için aldım.

[ogy]

Emeğine sağlık hocam güzel çalışma olmuş.