/********* Rui Santos Complete project details at https://RandomNerdTutorials.com/esp32-cam-take-photo-display-web-server/ IMPORTANT!!! - Select Board "AI Thinker ESP32-CAM" - GPIO 0 must be connected to GND to upload a sketch - After connecting GPIO 0 to GND, press the ESP32-CAM on-board RESET button to put your board in flashing mode The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. *********/ #include "WiFi.h" #include "esp_camera.h" #include "esp_timer.h" #include "img_converters.h" #include "Arduino.h" #include "soc/soc.h" // Disable brownour problems #include "soc/rtc_cntl_reg.h" // Disable brownour problems #include "driver/rtc_io.h" #include #include #include // Replace with your network credentials const char* ssid = "REPLACE_WITH_YOUR_SSID"; const char* password = "REPLACE_WITH_YOUR_PASSWORD"; // Create AsyncWebServer object on port 80 AsyncWebServer server(80); boolean takeNewPhoto = false; // Photo File Name to save in SPIFFS #define FILE_PHOTO "/photo.jpg" // OV2640 camera module pins (CAMERA_MODEL_AI_THINKER) #define PWDN_GPIO_NUM 32 #define RESET_GPIO_NUM -1 #define XCLK_GPIO_NUM 0 #define SIOD_GPIO_NUM 26 #define SIOC_GPIO_NUM 27 #define Y9_GPIO_NUM 35 #define Y8_GPIO_NUM 34 #define Y7_GPIO_NUM 39 #define Y6_GPIO_NUM 36 #define Y5_GPIO_NUM 21 #define Y4_GPIO_NUM 19 #define Y3_GPIO_NUM 18 #define Y2_GPIO_NUM 5 #define VSYNC_GPIO_NUM 25 #define HREF_GPIO_NUM 23 #define PCLK_GPIO_NUM 22 const char index_html[] PROGMEM = R"rawliteral(

ESP32-CAM Last Photo

It might take more than 5 seconds to capture a photo.

)rawliteral"; void setup() { // Serial port for debugging purposes Serial.begin(115200); // Connect to Wi-Fi WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(1000); Serial.println("Connecting to WiFi..."); } if (!SPIFFS.begin(true)) { Serial.println("An Error has occurred while mounting SPIFFS"); ESP.restart(); } else { delay(500); Serial.println("SPIFFS mounted successfully"); } // Print ESP32 Local IP Address Serial.print("IP Address: http://"); Serial.println(WiFi.localIP()); // Turn-off the 'brownout detector' WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); // OV2640 camera module 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_JPEG; if (psramFound()) { config.frame_size = FRAMESIZE_UXGA; config.jpeg_quality = 10; config.fb_count = 2; } else { config.frame_size = FRAMESIZE_SVGA; config.jpeg_quality = 12; config.fb_count = 1; } // Camera init esp_err_t err = esp_camera_init(&config); if (err != ESP_OK) { Serial.printf("Camera init failed with error 0x%x", err); ESP.restart(); } // Route for root / web page server.on("/", HTTP_GET, [](AsyncWebServerRequest * request) { request->send(200, "text/html", index_html); }); server.on("/capture", HTTP_GET, [](AsyncWebServerRequest * request) { takeNewPhoto = true; request->send(200, "text/plain", "Taking Photo"); }); server.on("/saved-photo", HTTP_GET, [](AsyncWebServerRequest * request) { request->send(SPIFFS, FILE_PHOTO, "image/jpg", false); }); // Start server server.begin(); } void loop() { if (takeNewPhoto) { capturePhotoSaveSpiffs(); takeNewPhoto = false; } delay(1); } // Check if photo capture was successful bool checkPhoto( fs::FS &fs ) { File f_pic = fs.open( FILE_PHOTO ); unsigned int pic_sz = f_pic.size(); return ( pic_sz > 100 ); } // Capture Photo and Save it to SPIFFS void capturePhotoSaveSpiffs( void ) { camera_fb_t * fb = NULL; // pointer bool ok = 0; // Boolean indicating if the picture has been taken correctly do { // Take a photo with the camera Serial.println("Taking a photo..."); fb = esp_camera_fb_get(); if (!fb) { Serial.println("Camera capture failed"); return; } // Photo file name Serial.printf("Picture file name: %s\n", FILE_PHOTO); File file = SPIFFS.open(FILE_PHOTO, FILE_WRITE); // Insert the data in the photo file if (!file) { Serial.println("Failed to open file in writing mode"); } else { file.write(fb->buf, fb->len); // payload (image), payload length Serial.print("The picture has been saved in "); Serial.print(FILE_PHOTO); Serial.print(" - Size: "); Serial.print(file.size()); Serial.println(" bytes"); } // Close the file file.close(); esp_camera_fb_return(fb); // check if file has been correctly saved in SPIFFS ok = checkPhoto(SPIFFS); } while ( !ok ); }