servidorwebgas - Wokwi ESP32, STM32, Arduino Simulator

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

const char* ssid     = "Wokwi-GUEST";
const char* password = "";

const int LED_PIN = 2;
const int PIN_GAS =	34;

WebServer server(80);

void raiz() {

  int ValorSensorGas = analogRead(PIN_GAS) ;
  int ValorCalculado = map(ValorSensorGas, 843, 4041, 0, 100);

  String html =
    "<!doctype html><html><head>"
    "<meta charset='utf-8'>"
    "<meta name='viewport' content='width=device-width, initial-scale=1'>"
    "<title>Servidor ESP32 - GAS</title>"
    "<style>body{font-family:Arial;padding:20px;} .card{padding:16px;border:1px solid #ccc;border-radius:12px;max-width:420px;}</style>"
    "</head><body>"
    "<div class='card'>"
    "<h2>Servidor ESP32 - GAS</h2><ul>";

    html = html + "<li>Valor Obtido: " + String(ValorSensorGas) + "</li>";    
    html = html + "<li>Valor Calculado: " + String(ValorCalculado) + "</li>";
    
    html = html + "</ul>"
    "</div>"
    "</body></html>";
    
  server.send(200, "text/html; charset=utf-8", html);
}

void NaoEncontrado() {
  server.send(404, "text/plain; charset=utf-8", "404 - Nao encontrado");
}

void setup() {

  Serial.begin(115200);
  delay(100);

  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);

  Serial.print("Conectando ao Wi-Fi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("\nConectado!");
  Serial.print("IP do ESP32: ");
  Serial.println(WiFi.localIP());

  server.on("/", raiz);
  server.onNotFound(NaoEncontrado);

  server.begin();
  Serial.println("Servidor HTTP iniciado!");
}

void loop() {

  server.handleClient();

}