/* ESP32_Wfi_LED Created for arduino-esp32 on 04 July, 2018 by Elochukwu Ifediora (fedy0) 200123 modified: Tareq Mahdawi / Juergen Walter ESP32_LED_Wifi.ino creates a WiFi access point and provides a web server on it. Steps: 1. Access point "ESP32-LED-Wifi" 2. PC: http://192.168.4.1 a website will appear: Click here to turn ON the LED. Click here to turn OFF the LED. 3. Be patient until the website appears (6...10s) It depends on your network configuration */ #include #include #include #define LED_BUILTIN 2 // LED - ESP32 pin const char *ssid = "ESP32-LED-Wifi"; // Service Set IDentifier network name 192.168.4.1 const char *password = "12345678"; // password WiFiServer server(80); void setup() { pinMode(LED_BUILTIN, OUTPUT); Serial.begin(115200); // object.method Serial.println(); Serial.println("Configuring access point..."); // You can remove the password parameter if you want the // AP to be open. WiFi.softAP(ssid, password); IPAddress myIP = WiFi.softAPIP(); Serial.print("AP IP address: "); Serial.println(myIP); server.begin(); Serial.println("Server started"); } void loop() { WiFiClient client = server.available(); // listen for incoming clients if (client) { // if you get a client, // Serial.println("New Client."); // print a message out the serial port String currentLine = ""; // make a String to hold incoming data from the client while (client.connected()) { // loop while the client's connected if (client.available()) { // if there's bytes to read from the client, char c = client.read(); // read a byte, then Serial.write(c); // print it out the serial monitor if (c == '\n') { // if the byte is a newline character // if the current line is blank, you got two newline characters in a row. // that's the end of the client HTTP request, so send a response: if (currentLine.length() == 0) { // HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK) // and a content-type so the client knows what's coming, then a blank line: client.println("HTTP/1.1 200 OK"); client.println("Content-type:text/html"); client.println(); // the CONTENT of the HTTP response follows the header: client.print("Click here to turn ON the LED.
"); client.print("Click here to turn OFF the LED.
"); // The HTTP response ends with another blank line: client.println(); // break out of the while loop: break; } else { // if you got a newline, then clear currentLine: currentLine = ""; } } else if (c != '\r') { // if you got anything else but a carriage return character, currentLine += c; // add it to the end of the currentLine } // Check to see if the client request was "GET /H" or "GET /L": if (currentLine.endsWith("GET /H")) { digitalWrite(LED_BUILTIN, LOW); // GET /H turns the LED on } if (currentLine.endsWith("GET /L")) { digitalWrite(LED_BUILTIN, HIGH); // GET /L turns the LED off } } } // close the connection: client.stop(); Serial.println("Client Disconnected."); } }