Esp32Cam-Config.ino

#include "esp_camera.h"
#include <WiFi.h>
#include "esp_timer.h"
#include "img_converters.h"
#include "Arduino.h"
#include "fb_gfx.h"
#include "soc/soc.h" //disable brownout problems
#include "soc/rtc_cntl_reg.h"  //disable brownout problems
#include "esp_http_server.h"

// Replace with your desired Wi-Fi credentials (for AP mode)
const char* ap_ssid = "ESP32-CAM";
const char* ap_password = "123456789"; // Change to a secure password

#define PART_BOUNDARY "123456789000000000000987654321"

// Camera model
#define CAMERA_MODEL_AI_THINKER

// GPIO definitions for AI Thinker model
#if defined(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
#else
  #error "Camera model not selected"
#endif

static const char* _STREAM_CONTENT_TYPE = "multipart/x-mixed-replace;boundary=" PART_BOUNDARY;
static const char* _STREAM_BOUNDARY = "\r\n--" PART_BOUNDARY "\r\n";
static const char* _STREAM_PART = "Content-Type: image/jpeg\r\nContent-Length: %u\r\n\r\n";

httpd_handle_t stream_httpd = NULL;
String new_ip_address = "";
bool isConnected = false; // Track connection status

// Stream handler
static esp_err_t stream_handler(httpd_req_t *req) {
  if (!isConnected) {
    // If not connected, return an error response
    httpd_resp_send_err(req, HTTPD_404_NOT_FOUND, "Not Found");
    return ESP_FAIL;
  }

  camera_fb_t * fb = NULL;
  esp_err_t res = ESP_OK;
  size_t _jpg_buf_len = 0;
  uint8_t * _jpg_buf = NULL;
  char * part_buf[64];

  res = httpd_resp_set_type(req, _STREAM_CONTENT_TYPE);
  if (res != ESP_OK) {
    return res;
  }

  while (true) {
    fb = esp_camera_fb_get();
    if (!fb) {
      Serial.println("Camera capture failed");
      res = ESP_FAIL;
    } else {
      if (fb->width > 400) {
        if (fb->format != PIXFORMAT_JPEG) {
          bool jpeg_converted = frame2jpg(fb, 80, &_jpg_buf, &_jpg_buf_len);
          esp_camera_fb_return(fb);
          fb = NULL;
          if (!jpeg_converted) {
            Serial.println("JPEG compression failed");
            res = ESP_FAIL;
          }
        } else {
          _jpg_buf_len = fb->len;
          _jpg_buf = fb->buf;
        }
      }
    }
    if (res == ESP_OK) {
      size_t hlen = snprintf((char *)part_buf, 64, _STREAM_PART, _jpg_buf_len);
      res = httpd_resp_send_chunk(req, (const char *)part_buf, hlen);
    }
    if (res == ESP_OK) {
      res = httpd_resp_send_chunk(req, (const char *)_jpg_buf, _jpg_buf_len);
    }
    if (res == ESP_OK) {
      res = httpd_resp_send_chunk(req, _STREAM_BOUNDARY, strlen(_STREAM_BOUNDARY));
    }
    if (fb) {
      esp_camera_fb_return(fb);
      fb = NULL;
      _jpg_buf = NULL;
    } else if (_jpg_buf) {
      free(_jpg_buf);
      _jpg_buf = NULL;
    }
    if (res != ESP_OK) {
      break;
    }
  }
  return res;
}

// Wi-Fi configuration handler
static esp_err_t wifi_config_handler(httpd_req_t *req) {
  if (isConnected) {
    // If already connected, redirect to stream page
    httpd_resp_set_status(req, "302 Found");
    httpd_resp_set_hdr(req, "Location", "/stream");
    httpd_resp_send(req, NULL, 0);
    return ESP_OK;
  }

  char buf[100];
  int ret, len = req->content_len;

  if (len > sizeof(buf) - 1) len = sizeof(buf) - 1;
  ret = httpd_req_recv(req, buf, len);
  buf[ret] = '\0'; // Null-terminate the received data

  // Parse SSID and password from the received data
  String body(buf);
  String ssid = body.substring(body.indexOf("ssid=") + 5, body.indexOf("&password="));
  String password = body.substring(body.indexOf("password=") + 9);

  // Connect to Wi-Fi
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid.c_str(), password.c_str());
  Serial.println("SSID= " + ssid + " Pass= " + password);

  // Wait for connection
  int attempts = 0;
  while (WiFi.status() != WL_CONNECTED && attempts < 20) {
    delay(1000);
    Serial.print(".");
    attempts++;
  }

  // Send response
  String response;
  if (WiFi.status() == WL_CONNECTED) {
    new_ip_address = WiFi.localIP().toString();
    isConnected = true; // Set connected status
    response = "<html><body><h2>Connection Successful!</h2>";
    response += "<p>You can access the stream at: <a href=\"http://" + new_ip_address + "\">http://" + new_ip_address + "</a></p>";
    response += "<img src=\"/stream\" style=\"width:100%;\"/>"; // Embed the stream directly
    response += "</body></html>";
    Serial.println("Connected. watch stream from= " + new_ip_address + "/stream");
  } else {
    response = "<html><body><h2>Connection Failed!</h2>";
    response += "<p>Please check your SSID and password.</p>";
    response += "</body></html>";
    Serial.println("Failed!!");
  }
  
  httpd_resp_send(req, response.c_str(), response.length());
  return ESP_OK;
}

// Root handler
static esp_err_t root_handler(httpd_req_t *req) {
  if (isConnected) {
    // If already connected, redirect to stream page
    httpd_resp_set_status(req, "302 Found");
    httpd_resp_set_hdr(req, "Location", "/stream");
    httpd_resp_send(req, NULL, 0);
    return ESP_OK;
  }

  const char* html = R"rawliteral(
    <html>
    <head>
      <title>Wi-Fi Configuration</title>
      <style>
        body {
          font-family: Arial, sans-serif;
          background-color: #f4f4f4;
          margin: 0;
          padding: 20px;
        }
        h2 {
          color: #333;
        }
        .container {
          max-width: 400px;
          margin: 0 auto;
          background: white;
          padding: 20px;
          border-radius: 5px;
          box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        input[type="text"],
        input[type="password"] {
          width: 100%;
          padding: 10px;
          margin: 10px 0;
          border: 1px solid #ccc;
          border-radius: 4px;
        }
        input[type="submit"] {
          background-color: #4CAF50;
          color: white;
          padding: 10px;
          border: none;
          border-radius: 4px;
          cursor: pointer;
          width: 100%;
        }
        input[type="submit"]:hover {
          background-color: #45a049;
        }
      </style>
    </head>
    <body>
      <div class="container">
        <h2>Wi-Fi Configuration</h2>
        <form action="/wifi_config" method="POST">
          <label for="ssid">SSID:</label>
          <input type="text" id="ssid" name="ssid" required>
          <label for="password">Password:</label>
          <input type="password" id="password" name="password" required>
          <input type="submit" value="Submit">
        </form>
      </div>
    </body>
    </html>
  )rawliteral";

  httpd_resp_send(req, html, strlen(html));
  return ESP_OK;
}

// Start camera server
void startCameraServer() {
  httpd_config_t config = HTTPD_DEFAULT_CONFIG();
  config.server_port = 80;

  httpd_uri_t stream_uri = {
    .uri       = "/stream",
    .method    = HTTP_GET,
    .handler   = stream_handler,
    .user_ctx  = NULL
  };

  httpd_uri_t config_uri = {
    .uri       = "/wifi_config",
    .method    = HTTP_POST,
    .handler   = wifi_config_handler,
    .user_ctx  = NULL
  };

  httpd_uri_t root_uri = {
    .uri       = "/",
    .method    = HTTP_GET,
    .handler   = root_handler,
    .user_ctx  = NULL
  };

  if (httpd_start(&stream_httpd, &config) == ESP_OK) {
    httpd_register_uri_handler(stream_httpd, &stream_uri);
    httpd_register_uri_handler(stream_httpd, &config_uri);
    httpd_register_uri_handler(stream_httpd, &root_uri);
  }
}

void setup() {
  WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); // disable brownout detector

  Serial.begin(115200);
  Serial.setDebugOutput(true);

  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);
    return;
  }

  // Set up Access Point
  WiFi.softAP(ap_ssid, ap_password);
  
  Serial.println("Access Point started");
  Serial.print("Connect to Wi-Fi using: http://");
  Serial.print(WiFi.softAPIP());  // Print the Access Point IP address

  // Start streaming web server
  startCameraServer();
}

void loop() {
  delay(1);
}