ESP32-cam pixel_format

wissem
Posts: 1
Joined: Fri Apr 15, 2022 5:25 pm

ESP32-cam pixel_format

Postby wissem » Fri Apr 15, 2022 5:34 pm

Hi all,

I am using a ESP32-cam with Arduino IDE ver 1.8.6.
i'm working on a project with PHP and esp32cam.

In my code, the esp will detect motion then read a qr code to connect wifi and send image to server.
i have an issue on changing esp32_cam pixelformat

- if I choose the grayscale format, the esp is detecting the motion, reading qr code ,connecting to wifi but then crashing and not sending the image to server .

- if I choose the jpeg format, I the esp can send the photo to server but can't detect the motion or read qr code because they need grayscale format .

in the loop I tried to add

sensor_t * s = esp_camera_sensor_get();
s->set_pixformat(s, PIXFORMAT_JPEG);

but the esp reads qr code ,connect to wifi and then crashing when trying to get the new image on fb = esp_camera_fb_get();
I think this is a problem related to buffer size .

Any ideas how to resolve this problem ?

Thanks

Code: Select all

 bool setup_camera(framesize_t frameSize) {
    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_sscb_sda = SIOD_GPIO_NUM;
    config.pin_sscb_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_JPEG;
    //works to send image to server
    config.pixel_format = PIXFORMAT_GRAYSCALE;
    //works to detect motion and read qr code
    config.frame_size = frameSize;
    config.jpeg_quality = 12;
    config.fb_count = 1;     
    bool ok = esp_camera_init(&config) == ESP_OK;
    sensor_t *sensor = esp_camera_sensor_get();
    sensor->set_framesize(sensor, frameSize);
    return ok;
    } 


    String sendPhoto() {
    String getAll;
    String getBody;

    camera_fb_t * fb = NULL;
    fb = esp_camera_fb_get();
    if(!fb) {
    Serial.println("Camera capture failed");
    delay(1000);
    //   ESP.restart();
    }
  
    Serial.println("Connecting to server: " + serverName);

    if (client.connect(serverName.c_str(), serverPort)) {
    Serial.println("Connection successful!");    
    String head = "--RandomNerdTutorials\r\nContent-Disposition: form-data; name=\"imageFile\"; 
    filename=\"esp32-cam.jpg\"\r\nContent-Type: image/jpeg\r\n\r\n";
    String tail = "\r\n--RandomNerdTutorials--\r\n";

    uint32_t imageLen = fb->len;
    uint32_t extraLen = head.length() + tail.length();
    uint32_t totalLen = imageLen + extraLen;
  
    client.println("POST " + serverPath + " HTTP/1.1");
    client.println("Host: " + serverName);
    client.println("Content-Length: " + String(totalLen));
    client.println("Content-Type: multipart/form-data; boundary=RandomNerdTutorials");
    client.println();
    client.print(head);
  
    uint8_t *fbBuf = fb->buf;
    size_t fbLen = fb->len;
    for (size_t n=0; n<fbLen; n=n+1024) {
      if (n+1024 < fbLen) {
        client.write(fbBuf, 1024);
        fbBuf += 1024;
      }
      else if (fbLen%1024>0) {
        size_t remainder = fbLen%1024;
        client.write(fbBuf, remainder);
      }
    }   







    
    client.print(tail);
    
    esp_camera_fb_return(fb);
    
    int timoutTimer = 10000;
    long startTimer = millis();
    boolean state = false;
    
    while ((startTimer + timoutTimer) > millis()) {
      Serial.print(".");
      delay(100);      
      while (client.available()) {
        char c = client.read();
        if (c == '\n') {
          if (getAll.length()==0) { state=true; }
          getAll = "";
        }
        else if (c != '\r') { getAll += String(c); }
        if (state==true) { getBody += String(c); }
        startTimer = millis();
      }
      if (getBody.length()>0) { break; }
    }
    Serial.println();
    client.stop();
    Serial.println(getBody);
    }
    else {
    getBody = "Connection to " + serverName +  " failed.";
    Serial.println(getBody);
    }
    return getBody;
    }


rpiloverbd
Posts: 101
Joined: Tue Mar 22, 2022 5:23 am

Re: ESP32-cam pixel_format

Postby rpiloverbd » Mon Apr 18, 2022 12:08 pm

Hello, are you using a MicroSD card? If so, do you think the memory is sufficient?

Who is online

Users browsing this forum: Bing [Bot], Google [Bot], Usama Masood and 93 guests