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How the image send from camera to computer? Help me

Question asked by dede.mht on Aug 12, 2013
Latest reply on Aug 14, 2013 by Clive One
I have a project with OV7670 with stm32f4-discovery. My OV7670 has 16 pins and without fifo. I want to the get one image with camera and I have to send this image to computer. But I don't have any idea. Help me.

My code:


/**
  ******************************************************************************
  * @file    main.c
  * @author  MCD Application Team
  * @version V1.0.0
  * @date    18-April-2011
  * @brief   Main program body
  ******************************************************************************
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
  ****************************************************************************** 
  */

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx.h"
#include "usart.h"
#include "LCD/LCD.h"
#include "camera/dcmi_OV7670.h"

/** @addtogroup STM32F2xx_StdPeriph_Examples
  * @{
  */

/** @addtogroup IOToggle
  * @{
  */
void LCD_CS_ResetBits(void);
void Delay(__IO uint32_t nTime);
void TimingDelay_Decrement(void);
static __IO uint32_t TimingDelay;

uint32_t fps=0;
uint32_t disfps=0;
uint32_t fpsbuff[5];
/**
  * @brief  Main program
  * @param  None
  * @retval None
  */
int main(void)

 OV7670_IDTypeDef OV7670ID;
 RCC_ClocksTypeDef SYS_Clocks;
 uint8_t i=0;
  /*!< At this stage the microcontroller clock setting is already configured,
       this is done through SystemInit() function which is called from startup
       file (startup_stm32f2xx.s) before to branch to application main.
       To reconfigure the default setting of SystemInit() function, refer to
        system_stm32f2xx.c file
  */
 if (SysTick_Config(SystemCoreClock / 1000))
   {
     /* Capture error */
     while (1);
   }
 RCC_GetClocksFreq(&SYS_Clocks);

 USART_Configuration();
 //USART_NVIC_Config();

 printf("\r\nSYSCLK:%dM\r\n",SYS_Clocks.SYSCLK_Frequency/1000000);
 printf("HCLK:%dM\r\n",SYS_Clocks.HCLK_Frequency/1000000);
 printf("PCLK1:%dM\r\n",SYS_Clocks.PCLK1_Frequency/1000000);
 printf("PCLK2:%dM\r\n",SYS_Clocks.PCLK2_Frequency/1000000);

 LCD_Initializtion();
   LCD_Clear(Red);
 
 DCMI_OV7670_Init();
  
 /*Set LCD direction*/  
 LCD_WriteReg(0x0011,0x6068);
 LCD_SetCursor(0,0);
 Prepare_Write_RAM();
                           
 /* Start Image capture and Display on the LCD *****************************/
    /* Enable DMA transfer */
    DMA_Cmd(DMA2_Stream1, ENABLE);

    /* Enable DCMI interface */
    DCMI_Cmd(ENABLE);

    /* Start Image capture */
    DCMI_CaptureCmd(ENABLE);
     
 

 
 while (1)
 {
  Delay(1000);
  fpsbuff[i]=fps;
    fps=0;
  i++;
  if(i==5)
  {
   disfps=(fpsbuff[0]+fpsbuff[1]+fpsbuff[2]+fpsbuff[3]+fpsbuff[4])/5;
   printf("FPS:%d\r\n",disfps);
   i=0;
  }        
 }
}

void Delay(__IO uint32_t nTime)
{
  TimingDelay = nTime;

  while(TimingDelay != 0)
  {}
}

void TimingDelay_Decrement(void)
{
  if (TimingDelay != 0x00)
  {
    TimingDelay--;
  }
}

void LCD_CS_ResetBits(void)
{
 GPIO_InitTypeDef  GPIO_InitStructure;
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);

 //LCD_CS PD7

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
 GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
 GPIO_Init(GPIOD, &GPIO_InitStructure); 

 GPIO_ResetBits(GPIOD , GPIO_Pin_7);   //CS=0;
}

#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 2011 STMicroelectronics *****END OF FILE****/



 

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