sonkm3/esp32-camera.ino

## esp32-camera.ino

#include <WiFi.h>
#include <WiFiClient.h>
#include <WebServer.h>
#include <ESPmDNS.h>
#include <Preferences.h>
#include <esp_camera.h>
#include <img_converters.h>

#define APP_NAME "esp32camera"

Preferences preferences;

char ssid_buffer[20];
char password_buffer[20];

IPAddress myIP;

WebServer server ( 80 );

#define PWDN_GPIO_NUM     -1
#define RESET_GPIO_NUM    15
#define XCLK_GPIO_NUM     27
#define SIOD_GPIO_NUM     22
#define SIOC_GPIO_NUM     23

#define Y9_GPIO_NUM       19
#define Y8_GPIO_NUM       36
#define Y7_GPIO_NUM       18
#define Y6_GPIO_NUM       39
#define Y5_GPIO_NUM        5
#define Y4_GPIO_NUM       34
#define Y3_GPIO_NUM       35
#define Y2_GPIO_NUM       32
#define VSYNC_GPIO_NUM    25
#define HREF_GPIO_NUM     26
#define PCLK_GPIO_NUM     21


void setup() {
  // put your setup code here, to run once:
  IPAddress myIP;

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

  preferences.begin(APP_NAME, false);

  connectWiFi();
  Serial.println("wifi status " + String(WiFi.status()));
  Serial.println(myIP);

  if (MDNS.begin(APP_NAME)) {
    Serial.println("MDNS responder started");
  }

  server.on("/", handleRoot);
  server.on("/setup", handleSetup);
  server.on("/setwifi", handleSetWifi);
  server.on("/reconnectwifi", handleReconnectWifi);
  server.on("/image", handleImage);
  server.onNotFound(handleNotFound);
  server.begin();
  Serial.println ( "HTTP server started" );

  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;
  config.frame_size = FRAMESIZE_VGA;
  config.jpeg_quality = 10;
  config.fb_count = 10;
  //config.wb_mode = 1;//0 - 4

  esp_err_t err = esp_camera_init(&config);
  if (err != ESP_OK) {
    Serial.printf("Camera init failed with error 0x%x", err);
    return;
  }
}

void connectWiFi() {
  int retry_count = 0;
  String ssid = preferences.getString("ssid", "");
  String password = preferences.getString("password", "");
  ssid.toCharArray(ssid_buffer, ssid.length() + 1);
  password.toCharArray(password_buffer, password.length() + 1);

  WiFi.mode(WIFI_STA); //WIFI_AP_STA
  WiFi.begin(ssid_buffer, password_buffer);

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    retry_count++;
    if (retry_count > 10) {
      break;
    }
  }

  if (WiFi.status() == WL_CONNECTED) {
    Serial.print("Connected to ");
    Serial.println(ssid);
    myIP = WiFi.localIP();
  } else {
    WiFi.disconnect();
    WiFi.mode(WIFI_AP);
    WiFi.softAP(APP_NAME);

    delay(100);

    myIP = WiFi.softAPIP();
  }
}

void handleRoot(){
  char html[2000];
  int sec = millis() / 1000;
  int min = sec / 60;
  int hr = min / 60;

  char uptime[20];

  snprintf(uptime, 20, "%02d:%02d:%02d", hr, min % 60, sec % 60);

  snprintf (html, 2000,
"<html>\
  <head>\
    <title>ESP32 Camera</title>\
  </head>\
  <body>\
    <h1>ESP32 Camera</h1>\
    <p>Uptime: %s</p>\
    <p><img src='/image?t=%d'/></p>\
    <a href='/setup'>setup</a>\
  </body>\
</html>",
    uptime,
    millis()
  );
  server.send (200, "text/html", html);
}

void handleSetup() {
  char html[800];
  int sec = millis() / 1000;
  int min = sec / 60;
  int hr = min / 60;

  char uptime[20];
  char ipaddress[20];
  char wifi[20];

  snprintf(uptime, 20, "%02d:%02d:%02d", hr, min % 60, sec % 60);
  snprintf(ipaddress, 15, "%d.%d.%d.%d", myIP[0], myIP[1], myIP[2], myIP[3]);

  snprintf(html, 800,
"<html>\
  <head>\
    <title>ESP32 Camera</title>\
  </head>\
  <body>\
    <h1>ESP32 Camera</h1>\
    <p>Uptime: %s</p>\
    <p>IP address: %s</p>\
    <form action='/setwifi' method='POST'>\
    <input type='text' value='%s' name='ssid'>\
    <input type='password' value='%s' name='password'>\
    <input type='submit' value='update'>\
    </form>\
    <form action='/reconnectwifi' method='POST'>\
    <input type='submit' value='reconnect'>\
    </form>\
    <p><a href='/'>top</a></p>\
  </body>\
</html>",
    uptime,
    ipaddress,
    ssid_buffer,
    password_buffer
  );
  server.send (200, "text/html", html);
}

void handleSetWifi(){
  if (server.hasArg("ssid") && server.hasArg("password")) {
    preferences.putString("ssid", server.arg("ssid"));
    preferences.putString("password", server.arg("password"));
    server.arg("ssid").toCharArray(ssid_buffer, 20);
    server.arg("password").toCharArray(password_buffer, 20);
  }

  server.sendHeader("Location", "/setup");
  server.sendHeader("Cache-Control", "no-cache");
  server.send(301);
}

void handleReconnectWifi(){
  server.sendHeader("Location", "/setup");
  server.sendHeader("Cache-Control", "no-cache");
  server.send(301);
  WiFi.disconnect();
  delay(500);

  connectWiFi();
}


void handleNotFound() {
  String message = "File Not Found\n\n";
  message += "URI: ";
  message += server.uri();
  message += "\nMethod: ";
  message += (server.method() == HTTP_GET) ? "GET" : "POST";
  message += "\nArguments: ";
  message += server.args();
  message += "\n";

  for(uint8_t i = 0; i < server.args(); i++){
    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
  }

  server.send(404, "text/plain", message);
}

void handleImage(){
    camera_fb_t * fb = NULL;
    esp_err_t res = ESP_OK;
    int64_t fr_start = esp_timer_get_time();

    fb = esp_camera_fb_get();
    if (!fb) {
        Serial.println("Camera capture failed");
        server.send(500, "text/plain", "Capture failedd");
        return;
    }

    server.send_P(200, "image/jpeg", (const char *)fb->buf, fb->len);

    esp_camera_fb_return(fb);
    int64_t fr_end = esp_timer_get_time();

    Serial.printf("JPG: %uB %ums\n", (uint32_t)(fb->len), (uint32_t)((fr_end - fr_start)/1000));
}


void loop() {
  // put your main code here, to run repeatedly:
  server.handleClient();

}

	#include <WiFi.h>
	#include <WiFiClient.h>
	#include <WebServer.h>
	#include <ESPmDNS.h>
	#include <Preferences.h>
	#include <esp_camera.h>
	#include <img_converters.h>

	#define APP_NAME "esp32camera"

	Preferences preferences;

	char ssid_buffer[20];
	char password_buffer[20];

	IPAddress myIP;

	WebServer server ( 80 );

	#define PWDN_GPIO_NUM -1
	#define RESET_GPIO_NUM 15
	#define XCLK_GPIO_NUM 27
	#define SIOD_GPIO_NUM 22
	#define SIOC_GPIO_NUM 23

	#define Y9_GPIO_NUM 19
	#define Y8_GPIO_NUM 36
	#define Y7_GPIO_NUM 18
	#define Y6_GPIO_NUM 39
	#define Y5_GPIO_NUM 5
	#define Y4_GPIO_NUM 34
	#define Y3_GPIO_NUM 35
	#define Y2_GPIO_NUM 32
	#define VSYNC_GPIO_NUM 25
	#define HREF_GPIO_NUM 26
	#define PCLK_GPIO_NUM 21


	void setup() {
	// put your setup code here, to run once:
	IPAddress myIP;

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

	preferences.begin(APP_NAME, false);

	connectWiFi();
	Serial.println("wifi status " + String(WiFi.status()));
	Serial.println(myIP);

	if (MDNS.begin(APP_NAME)) {
	Serial.println("MDNS responder started");
	}

	server.on("/", handleRoot);
	server.on("/setup", handleSetup);
	server.on("/setwifi", handleSetWifi);
	server.on("/reconnectwifi", handleReconnectWifi);
	server.on("/image", handleImage);
	server.onNotFound(handleNotFound);
	server.begin();
	Serial.println ( "HTTP server started" );

	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;
	config.frame_size = FRAMESIZE_VGA;
	config.jpeg_quality = 10;
	config.fb_count = 10;
	//config.wb_mode = 1;//0 - 4

	esp_err_t err = esp_camera_init(&config);
	if (err != ESP_OK) {
	Serial.printf("Camera init failed with error 0x%x", err);
	return;
	}
	}

	void connectWiFi() {
	int retry_count = 0;
	String ssid = preferences.getString("ssid", "");
	String password = preferences.getString("password", "");
	ssid.toCharArray(ssid_buffer, ssid.length() + 1);
	password.toCharArray(password_buffer, password.length() + 1);

	WiFi.mode(WIFI_STA); //WIFI_AP_STA
	WiFi.begin(ssid_buffer, password_buffer);

	while (WiFi.status() != WL_CONNECTED) {
	delay(1000);
	retry_count++;
	if (retry_count > 10) {
	break;
	}
	}

	if (WiFi.status() == WL_CONNECTED) {
	Serial.print("Connected to ");
	Serial.println(ssid);
	myIP = WiFi.localIP();
	} else {
	WiFi.disconnect();
	WiFi.mode(WIFI_AP);
	WiFi.softAP(APP_NAME);

	delay(100);

	myIP = WiFi.softAPIP();
	}
	}

	void handleRoot(){
	char html[2000];
	int sec = millis() / 1000;
	int min = sec / 60;
	int hr = min / 60;

	char uptime[20];

	snprintf(uptime, 20, "%02d:%02d:%02d", hr, min % 60, sec % 60);

	snprintf (html, 2000,
	"<html>\
	<head>\
	<title>ESP32 Camera</title>\
	</head>\
	<body>\
	<h1>ESP32 Camera</h1>\
	<p>Uptime: %s</p>\
	<p><img src='/image?t=%d'/></p>\
	<a href='/setup'>setup</a>\
	</body>\
	</html>",
	uptime,
	millis()
	);
	server.send (200, "text/html", html);
	}

	void handleSetup() {
	char html[800];
	int sec = millis() / 1000;
	int min = sec / 60;
	int hr = min / 60;

	char uptime[20];
	char ipaddress[20];
	char wifi[20];

	snprintf(uptime, 20, "%02d:%02d:%02d", hr, min % 60, sec % 60);
	snprintf(ipaddress, 15, "%d.%d.%d.%d", myIP[0], myIP[1], myIP[2], myIP[3]);

	snprintf(html, 800,
	"<html>\
	<head>\
	<title>ESP32 Camera</title>\
	</head>\
	<body>\
	<h1>ESP32 Camera</h1>\
	<p>Uptime: %s</p>\
	<p>IP address: %s</p>\
	<form action='/setwifi' method='POST'>\
	<input type='text' value='%s' name='ssid'>\
	<input type='password' value='%s' name='password'>\
	<input type='submit' value='update'>\
	</form>\
	<form action='/reconnectwifi' method='POST'>\
	<input type='submit' value='reconnect'>\
	</form>\
	<p><a href='/'>top</a></p>\
	</body>\
	</html>",
	uptime,
	ipaddress,
	ssid_buffer,
	password_buffer
	);
	server.send (200, "text/html", html);
	}

	void handleSetWifi(){
	if (server.hasArg("ssid") && server.hasArg("password")) {
	preferences.putString("ssid", server.arg("ssid"));
	preferences.putString("password", server.arg("password"));
	server.arg("ssid").toCharArray(ssid_buffer, 20);
	server.arg("password").toCharArray(password_buffer, 20);
	}

	server.sendHeader("Location", "/setup");
	server.sendHeader("Cache-Control", "no-cache");
	server.send(301);
	}

	void handleReconnectWifi(){
	server.sendHeader("Location", "/setup");
	server.sendHeader("Cache-Control", "no-cache");
	server.send(301);
	WiFi.disconnect();
	delay(500);

	connectWiFi();
	}


	void handleNotFound() {
	String message = "File Not Found\n\n";
	message += "URI: ";
	message += server.uri();
	message += "\nMethod: ";
	message += (server.method() == HTTP_GET) ? "GET" : "POST";
	message += "\nArguments: ";
	message += server.args();
	message += "\n";

	for(uint8_t i = 0; i < server.args(); i++){
	message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
	}

	server.send(404, "text/plain", message);
	}

	void handleImage(){
	camera_fb_t * fb = NULL;
	esp_err_t res = ESP_OK;
	int64_t fr_start = esp_timer_get_time();

	fb = esp_camera_fb_get();
	if (!fb) {
	Serial.println("Camera capture failed");
	server.send(500, "text/plain", "Capture failedd");
	return;
	}

	server.send_P(200, "image/jpeg", (const char *)fb->buf, fb->len);

	esp_camera_fb_return(fb);
	int64_t fr_end = esp_timer_get_time();

	Serial.printf("JPG: %uB %ums\n", (uint32_t)(fb->len), (uint32_t)((fr_end - fr_start)/1000));
	}


	void loop() {
	// put your main code here, to run repeatedly:
	server.handleClient();

	}