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--- esp32-cam-ch340_capture_photo [2025/03/19 14:08] – created bruno
+++ esp32-cam-ch340_capture_photo [2025/03/19 14:15] (current) – bruno
@@ Line 63: / Line 63: @@
     }
   }
+== Ca donne ==
+<code c>
+/*********
+  Rui Santos
+  Complete project details at https://RandomNerdTutorials.com/esp32-cam-take-photo-display-web-server/
+  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 <ESPAsyncWebServer.h>
+#include <SPIFFS.h>
+#include <FS.h>
+// Replace with your network credentials
+const char* ssid = "ssid";
+const char* password = "P4ssw0rd";
+// Create AsyncWebServer object on port 80
+AsyncWebServer server(80);
+boolean takeNewPhoto = false;
+boolean flashlight = 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
+#define LED_BUILTIN 4 // flashlight
+const char index_html[] PROGMEM = R"rawliteral(
+<!DOCTYPE HTML><html>
+<head>
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <style>
+    body { text-align:center; }
+    .vert { margin-bottom: 10%; }
+    .hori{ margin-bottom: 0%; }
+  </style>
+</head>
+<body>
+  <div id="container">
+    <h2>ESP32-CAM Last Photo</h2>
+    <p>It might take more than 5 seconds to capture a photo.</p>
+    <p>
+      <button onclick="rotatePhoto();">ROTATE</button>
+      <button onclick="capturePhoto()">CAPTURE PHOTO</button>
+      <button onclick="captureWithFlashlight()">CAPTURE WITH FLASHLIGHT</button>
+      <button onclick="location.reload();">REFRESH PAGE</button>
+    </p>
+  </div>
+  <div><img src="saved-photo" id="photo" width="70%"></div>
+</body>
+<script>
+  var deg = 0;
+  function capturePhoto() {
+    var xhr = new XMLHttpRequest();
+    xhr.open('GET', "/capture", true);
+    xhr.send();
+  }
+  function captureWithFlashlight() {
+    var xhr = new XMLHttpRequest();
+    xhr.open('GET', "/capturewithflashlight", true);
+    xhr.send();
+  }
+  function rotatePhoto() {
+    var img = document.getElementById("photo");
+    deg += 90;
+    if(isOdd(deg/90)){ document.getElementById("container").className = "vert"; }
+    else{ document.getElementById("container").className = "hori"; }
+    img.style.transform = "rotate(" + deg + "deg)";
+  }
+  function isOdd(n) { return Math.abs(n % 2) == 1; }
+</script>
+</html>)rawliteral";
+void setup() {
+  // Serial port for debugging purposes
+  Serial.begin(115200);
+  pinMode (LED_BUILTIN, OUTPUT); // flashlight
+  // 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("/capturewithflashlight", HTTP_GET, [](AsyncWebServerRequest * request) {
+    takeNewPhoto = true;
+    flashlight = 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) {
+    if (flashlight) digitalWrite(LED_BUILTIN, HIGH);
+    capturePhotoSaveSpiffs();
+    takeNewPhoto = false;
+    if (flashlight) {
+      digitalWrite(LED_BUILTIN, LOW);
+      flashlight = 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 );
+}
+</code>