ESP32 3.3.0 - Only Pixformat JPEG works

[vassilioannou]

Board

ESP32S3-CAM with ov2640 camera

Device Description

Windows laptop through USB port

Hardware Configuration

No.

Version

v3.3.0

Type

Bug

IDE Name

Arduino IDE 2.3.5

Operating System

Windows 10

Flash frequency

QIO 80MHZ

PSRAM enabled

yes

Upload speed

921600

Description

Only in 3.3.0 after uploading ESP reboots continously after "Camera OK" message.
Only with "config.pixel_format = PIXFORMAT_JPEG;" seems working fine, with all others (Grayscale, RGB565 etc.) I get the reboot.
Also, with all previous versions there was not any issue with the camera (exactly same code with 3.2.1 downgrade works fine).

Sketch

#include <esp_camera.h>

#define CAMERA_MODEL_ESP32S3_EYE  //Has PSRAM
#include <camera_pins.h>

void setup() {
  Serial.begin(115200);

  camera_config_t config;
  config.ledc_channel = LEDC_CHANNEL_0;
  config.ledc_timer = LEDC_TIMER_0;
  config.pin_d0 = Y2_GPIO_NUM;
  config.pin_d1 = Y3_GPIO_NUM;
  config.pin_d2 = Y4_GPIO_NUM;
  config.pin_d3 = Y5_GPIO_NUM;
  config.pin_d4 = Y6_GPIO_NUM;
  config.pin_d5 = Y7_GPIO_NUM;
  config.pin_d6 = Y8_GPIO_NUM;
  config.pin_d7 = Y9_GPIO_NUM;
  config.pin_xclk = XCLK_GPIO_NUM;
  config.pin_pclk = PCLK_GPIO_NUM;
  config.pin_vsync = VSYNC_GPIO_NUM;
  config.pin_href = HREF_GPIO_NUM;
  config.pin_sccb_sda = SIOD_GPIO_NUM;
  config.pin_sccb_scl = SIOC_GPIO_NUM;
  config.pin_pwdn = PWDN_GPIO_NUM;
  config.pin_reset = RESET_GPIO_NUM;
  config.xclk_freq_hz = 20000000;
  config.pixel_format = PIXFORMAT_GRAYSCALE;
  config.frame_size = FRAMESIZE_QVGA;
  config.grab_mode = CAMERA_GRAB_WHEN_EMPTY;
  config.fb_location = CAMERA_FB_IN_PSRAM;
  config.fb_count = 1;

  esp_err_t camera_error = esp_camera_init(&config);  // initialise the camera

  if (camera_error != ESP_OK) {
    Serial.print("ERROR: Camera init failed with error ");
    Serial.println(camera_error);
  } else {
    Serial.print("Camera OK.");
  }
}

void loop() {
 }

Debug Message

E (1280) cam_hal: DMA overflow
16:36:35.731 -> Guru Meditation Error: Core  0 panic'ed (Unhandled debug exception). 
16:36:35.764 -> Debug exception reason: Stack canary watchpoint triggered (cam_task)

Other Steps to Reproduce

No response

I have checked existing issues, online documentation and the Troubleshooting Guide

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.

[me-no-dev]

@RubenKelevra PTAL

[RubenKelevra]

@me-no-dev thanks for the mention: Same issue as discussed in espressif/esp32-camera#775 (comment) :

Previously this would work, because there was no check for buffer overflows, so we would just write the image past the allocated space.

Now it fails because the size of buffer is checked and the memory copy notices that the buffer size is too small.

I'll have a look at a fix.