About the Presense camera Sample Code

//#include [SDHCI.h]
// #include [stdio.h]
//#include [Camera.h]/*Required for Camera Library*/

// # define BAUDRATE (115200)

SDClass theSD;

int take_picture_count = 0; / * Variable for the filename to be written to the SDCard and the maximum number of files to be created */


/* Preview Callback*/


/* Callback from camera library when video frame is captured */

void CamCB (CamImage img)
{

  if(img.isAvailable())
  {

    /* Convert to RGB 565*/

    img.convertPixFormat(CAM_IMAGE_PIX_FMT_RGB565);


    This is the function that is registered with /*startStreaming() and called when the camera preview is output. 
    Within this function, check if the CamImage instance obtained as the function argument is available. 
    The pixel format has since been converted to RGB 565. After the conversion, it shows the data size and memory address obtained with getImgSize() and getImgBuff().
    Typically, you will output image data to the display you connected to at this stage to create a view of the camera's finder.*/

    Serial.print("Image data size=");
    Serial.print(img.getImgSize(), DEC);
    Serial.print(", ");

    Serial.print("buffaddr=");
    Serial.print((unsigned long)img.getImgBuff(),HEX);
    Serial.println("");
    }
    else
    {
      Serial.print("Failed to get video stream image\n";
      }
  }

  /*setup()*/


void setup() 
{
  Serial.begin (BAUDRATE);

  while(!Serial)
  {
    ;
    }

    /* Begin() without parameters is
     * Number of buffers = 130 FPS.QVGA, YUV 4:2:2 format
    */

    Serial.println("Prepar camera");
    the Camera.begin();

    /* If you receive video data from a camera device, click
     * Call CamCB in Camera Library
    */

    Serial.println("Start streaming");
    theCamera.startStreaming(true.CamCB);

    /* Set auto white balance*/

    Serial.println("Set Auto white balance parameter");
    theCamera.setAutoWhiteBalanceMode(CAM_WHITE_BALANCE_DAYLIGHT);

    /* Set parameters for still images
     * QUADVGA and JPEG if:
    */

    Serial.println("Start streaming");
    TheCamera.setStillPictureImageFormat(
      CAM_IMGSIZE_QUADVGA_H,
      CAM_IMGSIZE_QUADVGA_V,
      CAM_IMAGE_PIX_FMT_JPG);

}

void loop()
{
  sleep(1);

  /*You can change the format of the still image here if necessary.
  */

  /*theCamera.setStillPictureImageFormat(
   * CAM_IMGSIZE_HD_H,
   * CAM_IMGSIZE_HD_V,
   *CAM_IMAGE_PIX_FMT_JPG);
    */

/* This code allows you to take 100 photos every second from the start.
*/

  if(take_picture_count<100)
  {

      /* To take still images
      * Unlike video streams,
      * This API waits for image data to be received.
      */

     Serial.println("call takePicture()");
     CamImage img=theCamera.takePicture();

     /* Check the availability of img instances
      * If an error occurs, it cannot be used.
     */

      if(img.isAvailable())
      {
        /* Create a file
        */

        char filename [16] = {0};
        sprintf(filename, "PICT%03d.jpg", take_picture_count);

        Serial.print("Save take picture as");
        Serial.print(filename);
        Serial.println("");

        /* Save to SD Card by File Name
        */

        File myFile=theSD.open(filename, FILE_WRITE);
        myFile.write(img, getImgBuff(), img.getImgSize());
        myFile.close();

        }

        take_picture_count++;
  }

}