Plataformas HTTP 2 - Wokwi ESP32, STM32, Arduino Simulator

#include <WiFi.h>
#include <WebServer.h>

// --- Configurações de WiFi ---
const char* ssid = "NPITI-IoT";
const char* password = "NPITI-IoT";

// --- Definição dos Pinos dos LEDs ---
const int ledPin1 = 18;
const int ledPin2 = 19;

// --- Configurações de PWM ---
// No Core 3.0, anexamos diretamente ao pino
const int freq = 5000;
const int resolution = 8; // 8 bits (0-255)

// Cria o objeto do servidor na porta 80
WebServer server(80);

// --- Código HTML da Página Web (O mesmo do anterior) ---
const char index_html[] PROGMEM = R"rawliteral(
<!DOCTYPE html>
<html>
<head>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Controle PWM ESP32 v3.0</title>
  <style>
    body { font-family: Helvetica, sans-serif; text-align: center; margin: 0; padding: 20px; background-color: #f4f4f4; }
    h1 { color: #333; }
    .card { background: white; max-width: 400px; margin: 0 auto; padding: 30px; border-radius: 10px; box-shadow: 0 4px 8px rgba(0,0,0,0.1); }
    .slider-container { margin-bottom: 25px; }
    label { font-weight: bold; display: block; margin-bottom: 10px; font-size: 1.2rem;}
    input[type=range] { width: 100%; }
    span { color: #555; font-size: 0.9rem; }
  </style>
</head>
<body>
  <div class="card">
    <h1>Controle de LEDs</h1>
    
    <div class="slider-container">
      <label for="slider1">LED 1 (GPIO 18)</label>
      <input type="range" min="0" max="255" value="0" id="slider1" oninput="updateLed(1, this.value)">
      <span id="val1">Valor: 0</span>
    </div>

    <div class="slider-container">
      <label for="slider2">LED 2 (GPIO 19)</label>
      <input type="range" min="0" max="255" value="0" id="slider2" oninput="updateLed(2, this.value)">
      <span id="val2">Valor: 0</span>
    </div>
  </div>

  <script>
    function updateLed(id, value) {
      document.getElementById('val' + id).innerHTML = 'Valor: ' + value;
      var xhr = new XMLHttpRequest();
      xhr.open("GET", "/update?led=" + id + "&val=" + value, true);
      xhr.send();
    }
  </script>
</body>
</html>
)rawliteral";

// --- Funções do Servidor ---

void handleRoot() {
  server.send(200, "text/html", index_html);
}

void handleUpdate() {
  if (server.hasArg("led") && server.hasArg("val")) {
    String ledID = server.arg("led");
    String ledVal = server.arg("val");
    int value = ledVal.toInt();

    // MUDANÇA AQUI: ledcWrite agora recebe o PINO, não o canal
    if (ledID == "1") {
      ledcWrite(ledPin1, value); 
      Serial.printf("LED 1 (GPIO %d) set to: %d\n", ledPin1, value);
    } 
    else if (ledID == "2") {
      ledcWrite(ledPin2, value);
      Serial.printf("LED 2 (GPIO %d) set to: %d\n", ledPin2, value);
    }
    
    server.send(200, "text/plain", "OK");
  } else {
    server.send(400, "text/plain", "Bad Request");
  }
}

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

  // MUDANÇA AQUI: ledcAttach substitui ledcSetup e ledcAttachPin
  // Sintaxe: ledcAttach(pino, frequência, resolução)
  if (!ledcAttach(ledPin1, freq, resolution)) {
    Serial.println("Falha ao configurar LED 1");
  }
  if (!ledcAttach(ledPin2, freq, resolution)) {
    Serial.println("Falha ao configurar LED 2");
  }

  // Conexão WiFi
  Serial.print("Conectando em ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  
  Serial.println("");
  Serial.print("WiFi conectado. IP: ");
  Serial.println(WiFi.localIP());

  server.on("/", handleRoot);
  server.on("/update", handleUpdate);

  server.begin();
}

void loop() {
  server.handleClient();
}