Corrupted image file with esp32-s3 and OV5640 module

[amisbs]

We have been working with the ESP32-S3 dev module (ESP32-S3-WROOM-1-N8R8) in order to capture 5 megapixel images with the Arducam OV5640D (which essentially is, to our understanding, a breakout board with voltage dividers for the OV5640 camera module)
When setting the resolution to HQVGA (240x176) we get the following output:

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1. ESP-ROM:esp32s3-20210327
2. Build:Mar 27 2021
3. rst:0x1 (POWERON),boot:0x8 (SPI_FAST_FLASH_BOOT)
4. SPIWP:0xee
5. mode:DIO, clock div:1
6. load:0x3fce3808,len:0x44c
7. load:0x403c9700,len:0xbe4
8. load:0x403cc700,len:0x2a38
9. entry 0x403c98d4
10. [   115][I][esp32-hal-psram.c:96] psramInit(): PSRAM enabled
11. [   129][D][esp32-s3-minimal-ov5640-test.ino:18] printDebugMemoryInfo(): Total heap: 388856
12. [   129][D][esp32-s3-minimal-ov5640-test.ino:19] printDebugMemoryInfo(): Free heap: 363272
13. [   134][D][esp32-s3-minimal-ov5640-test.ino:20] printDebugMemoryInfo(): Total PSRAM: 8386295
14. [   142][D][esp32-s3-minimal-ov5640-test.ino:21] printDebugMemoryInfo(): Free PSRAM: 8386295
15. [  1057][I][camera_functions.ino:84] camera_capture(): [camera_functions.ino] Picture taken! Its size was: 1452 bytes
16. FFD8FFE000104A46494600010101000000000000FFDB0043000C08090B09080 ... 00A2800A2800A2800A2800A2800A2800A2800A2800A2800A2800A2800A2800A2803FFFD9

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Sometimes the printed bytes correspond to a broken jpeg file, otherwise it is either corrupted or valid.

When setting the resolution to FRAMESIZE_QSXGA 2560x1920 we get "camera capture failed error", despite PSRAM being enabled and abundant.

Here is the arduino config:

arduino_setup.png (67.31 KiB) Viewed 1270 times

Here is the arduino code:

main file

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1. #include "esp_camera.h"
2.  
3. void setup()
4. {
5.   Serial.begin(115200);
6.   printDebugMemoryInfo();
7.   camera_init();
8. }
9.  
10. void loop()
11. {  
12.   camera_capture();
13.   delay(5000);
14. }
15.  
16. void printDebugMemoryInfo()
17. {
18.   log_d("Total heap: %d", ESP.getHeapSize());
19.   log_d("Free heap: %d", ESP.getFreeHeap());
20.   log_d("Total PSRAM: %d", ESP.getPsramSize());
21.   log_d("Free PSRAM: %d", ESP.getFreePsram());
22. }

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and the camera_functions.ino:

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1. #include "esp_camera.h"
2.  
3. #define CAM_MODULE_NAME "Arducam OV5640D"
4. #define CAM_PIN_PWDN -1
5. #define CAM_PIN_RESET -1
6.  
7. #define CAM_PIN_VSYNC 12
8. #define CAM_PIN_HREF 11
9. #define CAM_PIN_PCLK 10
10. #define CAM_PIN_XCLK 9
11.  
12. #define XCLK_FREQ_HZ 20000000
13.  
14. #define CAM_PIN_SIOD 13 //sda
15. #define CAM_PIN_SIOC 8 //scl
16.  
17. #define CAM_PIN_D0 4
18. #define CAM_PIN_D1 5
19. #define CAM_PIN_D2 6
20. #define CAM_PIN_D3 7
21. #define CAM_PIN_D4 15
22. #define CAM_PIN_D5 16
23. #define CAM_PIN_D6 17
24. #define CAM_PIN_D7 18
25.  
26. static const char* TAG = "camera_functions.ino";
27.  
28. static camera_config_t camera_config = {  
29.   .pin_pwdn = CAM_PIN_PWDN,
30.   .pin_reset = CAM_PIN_RESET,
31.   .pin_xclk = CAM_PIN_XCLK,
32.   .pin_sscb_sda = CAM_PIN_SIOD,
33.   .pin_sscb_scl = CAM_PIN_SIOC,
34.  
35.   .pin_d7 = CAM_PIN_D7,
36.   .pin_d6 = CAM_PIN_D6,
37.   .pin_d5 = CAM_PIN_D5,
38.   .pin_d4 = CAM_PIN_D4,
39.   .pin_d3 = CAM_PIN_D3,
40.   .pin_d2 = CAM_PIN_D2,
41.   .pin_d1 = CAM_PIN_D1,
42.   .pin_d0 = CAM_PIN_D0,
43.   .pin_vsync = CAM_PIN_VSYNC,
44.   .pin_href = CAM_PIN_HREF,
45.   .pin_pclk = CAM_PIN_PCLK,
46.  
47.   .xclk_freq_hz = XCLK_FREQ_HZ,
48.   .ledc_timer = LEDC_TIMER_0,
49.   .ledc_channel = LEDC_CHANNEL_0,
50.  
51.   .pixel_format = PIXFORMAT_JPEG,
52.   .frame_size = FRAMESIZE_HQVGA, //240x176
53.   .jpeg_quality = 12,
54.   .fb_count = 1,
55.   .grab_mode = CAMERA_GRAB_LATEST//CAMERA_GRAB_WHEN_EMPTY
56. };
57.  
58. esp_err_t camera_init(){
59.   //power up the camera if PWDN pin is defined
60.   if(CAM_PIN_PWDN != -1){
61.     pinMode(CAM_PIN_PWDN, OUTPUT);
62.     digitalWrite(CAM_PIN_PWDN, LOW);
63.   }
64.  
65.   //initialize the camera
66.   esp_err_t err = esp_camera_init(&camera_config);
67.   if (err != ESP_OK) {
68.     ESP_LOGE(TAG, "Camera Init Failed");
69.     return err;
70.   }
71.  
72.   return ESP_OK;
73. }
74.  
75. esp_err_t camera_capture(){
76.   //acquire a frame
77.   camera_fb_t * fb = esp_camera_fb_get();
78.   if (!fb) {
79.     ESP_LOGE(TAG, "Camera Capture Failed");
80.     return ESP_FAIL;
81.   }
82.    
83.   ESP_LOGI(TAG, "Picture taken! Its size was: %zu bytes", fb->len);
84.   for (int i=0; i<fb->len; i++) {
85.     if (fb->buf[i] < 16) {
86.       Serial.print('0');
87.     }
88.     Serial.print(fb->buf[i], HEX);
89.   }
90.   Serial.println();
91.  
92.   //return the frame buffer back to the driver for reuse
93.   esp_camera_fb_return(fb);
94.   return ESP_OK;
95. }
96.  

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[amisbs]

Upon further testing, we have discovered that even with the higher resolution the behaviour is similar, with the output being either "camera capture failed" or a sequence of bytes containing valid jpg markers (FF D8 FF at the beginning and FF D9 at the end) that amount to an invalid image file.

[simardeep27]

Hi, can you please share your pin configuration to show how are you connecting your camera with the esp32 module. I am trying to connect a arducam 2MP plus camera to the same, but I am not able to read the frames.

Thanks