stm32f769 custom board with ov2640 camera jpeg output

[Tp_it]

Hi,

we have custom board based on stm32f769 and ov2640 camera configured to jpeg output at 160x120 resolution. camera output is saved into file and when opened it is black.when file content is viewed it has proper header and end bytes as shown in screenshots jpg1,jpg2.I am configuring below values during ov2640 initialization.Attached the obtained image from camera frame buffer. can someone suggest some additional configuration is needed? brightness settings or someother settings?

// Hardware reset

HAL_GPIO_WritePin(GPIOI, GPIO_PIN_8, GPIO_PIN_RESET);

CAMERA_Delay(100);

HAL_GPIO_WritePin(GPIOI, GPIO_PIN_8, GPIO_PIN_SET);

CAMERA_Delay(100);

  

 /* Prepare the camera to be configured */

 CAMERA_IO_Write8(DeviceAddr, OV2640_DSP_RA_DLMT, 0x01);

 CAMERA_IO_Write8(DeviceAddr, OV2640_SENSOR_COM7, 0x80);

 CAMERA_Delay(200);

  

 /* Initialize OV2640 */

 switch (resolution)

 {

 case CAMERA_R160x120:

  {

   for(index=0; index<(sizeof(OV2640_JPEG_INIT)/2); index++)

   {

   // CAMERA_IO_Write(DeviceAddr, OV2640_QQVGA[index][0], OV2640_QQVGA[index][1]);

    CAMERA_IO_Write8(DeviceAddr, OV2640_JPEG_INIT[index][0], OV2640_JPEG_INIT[index][1]);

    CAMERA_Delay(10);

   } 

   for(index=0; index<(sizeof(OV2640_YUV422)/2); index++)

   {

      // CAMERA_IO_Write(DeviceAddr, OV2640_QQVGA[index][0], OV2640_QQVGA[index][1]);

      CAMERA_IO_Write8(DeviceAddr, OV2640_YUV422[index][0], OV2640_YUV422[index][1]);

      CAMERA_Delay(10);

   }

   for(index=0; index<(sizeof(OV2640_JPEG)/2); index++)

   {

     CAMERA_IO_Write8(DeviceAddr, OV2640_JPEG[index][0], OV2640_JPEG[index][1]);

     CAMERA_Delay(10);

   }

   CAMERA_IO_Write8(DeviceAddr, 0xff, 0x01);

   CAMERA_Delay(10);

   CAMERA_IO_Write8(DeviceAddr, 0x15, 0x00);

   for(index=0; index<(sizeof(OV2640_160x120_JPEG)/2); index++)

   {

     CAMERA_IO_Write8(DeviceAddr, OV2640_160x120_JPEG[index][0], OV2640_160x120_JPEG[index][1]);

     CAMERA_Delay(10);

   }

   break;

  }   

const unsigned char OV2640_JPEG_INIT[][2] = { { 0xff, 0x00 }, { 0x2c, 0xff }, {

0x2e, 0xdf }, { 0xff, 0x01 }, { 0x3c, 0x32 }, { 0x11, 0x00 }, { 0x09,

0x02 }, { 0x04, 0x28 }, { 0x13, 0xe5 }, { 0x14, 0x48 }, { 0x2c, 0x0c },

{ 0x33, 0x78 }, { 0x3a, 0x33 }, { 0x3b, 0xfB }, { 0x3e, 0x00 }, { 0x43,

0x11 }, { 0x16, 0x10 }, { 0x39, 0x92 }, { 0x35, 0xda }, { 0x22,

0x1a }, { 0x37, 0xc3 }, { 0x23, 0x00 }, { 0x34, 0xc0 }, { 0x36,

0x1a }, { 0x06, 0x88 }, { 0x07, 0xc0 }, { 0x0d, 0x87 }, { 0x0e,

0x41 }, { 0x4c, 0x00 }, { 0x48, 0x00 }, { 0x5B, 0x00 }, { 0x42,

0x03 }, { 0x4a, 0x81 }, { 0x21, 0x99 }, { 0x24, 0x40 }, { 0x25,

0x38 }, { 0x26, 0x82 }, { 0x5c, 0x00 }, { 0x63, 0x00 }, { 0x61,

0x70 }, { 0x62, 0x80 }, { 0x7c, 0x05 }, { 0x20, 0x80 }, { 0x28,

0x30 }, { 0x6c, 0x00 }, { 0x6d, 0x80 }, { 0x6e, 0x00 }, { 0x70,

0x02 }, { 0x71, 0x94 }, { 0x73, 0xc1 }, { 0x12, 0x40 }, { 0x17,

0x11 }, { 0x18, 0x43 }, { 0x19, 0x00 }, { 0x1a, 0x4b }, { 0x32,

0x09 }, { 0x37, 0xc0 }, { 0x4f, 0x60 }, { 0x50, 0xa8 }, { 0x6d,

0x00 }, { 0x3d, 0x38 }, { 0x46, 0x3f }, { 0x4f, 0x60 }, { 0x0c,

0x3c }, { 0xff, 0x00 }, { 0xe5, 0x7f }, { 0xf9, 0xc0 }, { 0x41,

0x24 }, { 0xe0, 0x14 }, { 0x76, 0xff }, { 0x33, 0xa0 }, { 0x42,

0x20 }, { 0x43, 0x18 }, { 0x4c, 0x00 }, { 0x87, 0xd5 }, { 0x88,

0x3f }, { 0xd7, 0x03 }, { 0xd9, 0x10 }, { 0xd3, 0x82 }, { 0xc8,

0x08 }, { 0xc9, 0x80 }, { 0x7c, 0x00 }, { 0x7d, 0x00 }, { 0x7c,

0x03 }, { 0x7d, 0x48 }, { 0x7d, 0x48 }, { 0x7c, 0x08 }, { 0x7d,

0x20 }, { 0x7d, 0x10 }, { 0x7d, 0x0e }, { 0x90, 0x00 }, { 0x91,

0x0e }, { 0x91, 0x1a }, { 0x91, 0x31 }, { 0x91, 0x5a }, { 0x91,

0x69 }, { 0x91, 0x75 }, { 0x91, 0x7e }, { 0x91, 0x88 }, { 0x91,

0x8f }, { 0x91, 0x96 }, { 0x91, 0xa3 }, { 0x91, 0xaf }, { 0x91,

0xc4 }, { 0x91, 0xd7 }, { 0x91, 0xe8 }, { 0x91, 0x20 }, { 0x92,

0x00 }, { 0x93, 0x06 }, { 0x93, 0xe3 }, { 0x93, 0x05 }, { 0x93,

0x05 }, { 0x93, 0x00 }, { 0x93, 0x04 }, { 0x93, 0x00 }, { 0x93,

0x00 }, { 0x93, 0x00 }, { 0x93, 0x00 }, { 0x93, 0x00 }, { 0x93,

0x00 }, { 0x93, 0x00 }, { 0x96, 0x00 }, { 0x97, 0x08 }, { 0x97,

0x19 }, { 0x97, 0x02 }, { 0x97, 0x0c }, { 0x97, 0x24 }, { 0x97,

0x30 }, { 0x97, 0x28 }, { 0x97, 0x26 }, { 0x97, 0x02 }, { 0x97,

0x98 }, { 0x97, 0x80 }, { 0x97, 0x00 }, { 0x97, 0x00 }, { 0xc3,

0xed }, { 0xa4, 0x00 }, { 0xa8, 0x00 }, { 0xc5, 0x11 }, { 0xc6,

0x51 }, { 0xbf, 0x80 }, { 0xc7, 0x10 }, { 0xb6, 0x66 }, { 0xb8,

0xA5 }, { 0xb7, 0x64 }, { 0xb9, 0x7C }, { 0xb3, 0xaf }, { 0xb4,

0x97 }, { 0xb5, 0xFF }, { 0xb0, 0xC5 }, { 0xb1, 0x94 }, { 0xb2,

0x0f }, { 0xc4, 0x5c }, { 0xc0, 0x64 }, { 0xc1, 0x4B }, { 0x8c,

0x00 }, { 0x86, 0x3D }, { 0x50, 0x00 }, { 0x51, 0xC8 }, { 0x52,

0x96 }, { 0x53, 0x00 }, { 0x54, 0x00 }, { 0x55, 0x00 }, { 0x5a,

0xC8 }, { 0x5b, 0x96 }, { 0x5c, 0x00 }, { 0xd3, 0x00 }, { 0xc3,

0xed }, { 0x7f, 0x00 }, { 0xda, 0x00 }, { 0xe5, 0x1f }, { 0xe1,

0x67 }, { 0xe0, 0x00 }, { 0xdd, 0x7f }, { 0x05, 0x00 }, { 0x12,

0x40 }, { 0xd3, 0x04 }, { 0xc0, 0x16 }, { 0xC1, 0x12 }, { 0x8c,

0x00 }, { 0x86, 0x3d }, { 0x50, 0x00 }, { 0x51, 0x2C }, { 0x52,

0x24 }, { 0x53, 0x00 }, { 0x54, 0x00 }, { 0x55, 0x00 }, { 0x5A,

0x2c }, { 0x5b, 0x24 }, { 0x5c, 0x00 }, { 0xff, 0xff }, };

const unsigned char OV2640_JPEG[][2] = { { 0xe0, 0x14 }, { 0xe1, 0x77 }, { 0xe5,

0x1f }, { 0xd7, 0x03 }, { 0xda, 0x10 }, { 0xe0, 0x00 }, { 0xFF, 0x01 },

{ 0x04, 0x08 }, { 0xff, 0xff }, };

const unsigned char OV2640_160x120_JPEG[][2] = { { 0xe0, 0x14 }, { 0xe1, 0x77 },

{ 0xe5, 0x1f }, { 0xd7, 0x03 }, { 0xda, 0x10 }, { 0xe0, 0x00 }, { 0xFF,

0x01 }, { 0x04, 0x08 },

//{ 0x12, 0x02 }, //Enable Color Bar Test Pattern

{ 0xff, 0xff }, };

const unsigned char OV2640_YUV422[][2] = { { 0xFF, 0x00 }, { 0x05, 0x00 }, {

0xDA, 0x10 }, { 0xD7, 0x03 }, { 0xDF, 0x00 }, { 0x33, 0x80 }, { 0x3C,

0x40 }, { 0xe1, 0x77 }, { 0x00, 0x00 }, { 0xff, 0xff }, };