Wokwi - Online ESP32, STM32, Arduino Simulator

#include <WiFi.h>
#include <ESPAsyncWebServer.h>

// Replace with your Wi-Fi credentials
const char* ssid = "Your_SSID";
const char* password = "Your_PASSWORD";

// Create an AsyncWebServer object on port 80
AsyncWebServer server(80);

// Define LED pins
const int led1Pin = 2;  // GPIO2 for LED1
const int led2Pin = 4;  // GPIO4 for LED2

// LED states
bool led1State = false;
bool led2State = false;

// HTML webpage with CSS animations
const char webpage[] PROGMEM = R"rawliteral(
<!DOCTYPE html>
<html>
<head>
  <title>ESP32 LED Control</title>
  <style>
    body {
      font-family: Arial, sans-serif;
      text-align: center;
      background-color: #f4f4f9;
      margin: 0;
      padding: 0;
    }
    h1 {
      color: #333;
    }
    button {
      background-color: #6200ea;
      color: white;
      border: none;
      padding: 15px 30px;
      font-size: 16px;
      margin: 10px;
      border-radius: 8px;
      cursor: pointer;
      transition: transform 0.2s, background-color 0.3s, box-shadow 0.3s;
    }
    button:hover {
      background-color: #3700b3;
      transform: scale(1.1);
      box-shadow: 0px 4px 15px rgba(0, 0, 0, 0.2);
    }
    button:active {
      transform: scale(1.05);
    }
    p {
      font-size: 18px;
      color: #555;
    }
  </style>
</head>
<body>
  <h1>ESP32 LED Control</h1>
  <p>Click the buttons below to control the LEDs:</p>
  
  <button onclick="toggleLED('led1')">Toggle LED 1</button>
  <p id="status1">LED 1 is OFF</p>
  
  <button onclick="toggleLED('led2')">Toggle LED 2</button>
  <p id="status2">LED 2 is OFF</p>

  <script>
    function toggleLED(led) {
      fetch('/toggle?led=' + led)
        .then(response => response.text())
        .then(status => {
          if (led === 'led1') {
            document.getElementById('status1').innerText = "LED 1 is " + status;
          } else if (led === 'led2') {
            document.getElementById('status2').innerText = "LED 2 is " + status;
          }
        });
    }
  </script>
</body>
</html>
)rawliteral";

void setup() {
  Serial.begin(115200);

  // Initialize LED pins
  pinMode(led1Pin, OUTPUT);
  pinMode(led2Pin, OUTPUT);
  digitalWrite(led1Pin, LOW);
  digitalWrite(led2Pin, LOW);

  // Connect to Wi-Fi
  Serial.println("Connecting to Wi-Fi...");
  WiFi.begin(ssid, password);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.print(".");
  }
  
  Serial.println("\nWi-Fi connected!");
  Serial.print("IP Address: ");
  Serial.println(WiFi.localIP());

  // Serve the webpage
  server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
    request->send_P(200, "text/html", webpage);
  });

  // Handle LED toggle requests
  server.on("/toggle", HTTP_GET, [](AsyncWebServerRequest *request) {
    if (request->hasParam("led")) {
      String ledParam = request->getParam("led")->value();
      
      if (ledParam == "led1") {
        led1State = !led1State;
        digitalWrite(led1Pin, led1State ? HIGH : LOW);
        request->send(200, "text/plain", led1State ? "ON" : "OFF");
      } else if (ledParam == "led2") {
        led2State = !led2State;
        digitalWrite(led2Pin, led2State ? HIGH : LOW);
        request->send(200, "text/plain", led2State ? "ON" : "OFF");
      } else {
        request->send(400, "text/plain", "Invalid LED");
      }
    } else {
      request->send(400, "text/plain", "Missing parameter");
    }
  });

  // Start the server
  server.begin();
}

void loop() {
}