web server

#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>

const char* ssid = "****************";
const char* password = "**************";


ESP8266WebServer server(80); //objeto webserver na porta 80

const int led = 2;

void handleRoot() { // requisita pagina raiz
  digitalWrite(led, 1); // led pisca

  String textoHTML;

  textoHTML = "Ola!! Aqui &eacute; o <b>ESP8266</b> falando!<br> ";
  textoHTML += "Porta A0: ";
  textoHTML += analogRead(A0);
   
  server.send(200, "text/html", textoHTML);
  digitalWrite(led, 0);
}

void handleNotFound(){ // caso a pagina nao existe
  digitalWrite(led, 1);
  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);
  digitalWrite(led, 0);
}

void setup(void){
  pinMode(led, OUTPUT);
  digitalWrite(led, 0); //led desligado
  Serial.begin(115200); // serve para testar a conexao do monitor serial com velocidade 115200
  WiFi.mode(WIFI_STA); // modo de conexao
  WiFi.begin(ssid, password); // passa login e senha
  Serial.println("");

  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print("."); // se ficar o ponto, tem algum erro
  }
  Serial.println(""); // se parar o ponto ele conectou
  Serial.print("Conectado em: ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  if (MDNS.begin("esp8266")) {
    Serial.println("MDNS responder started");
  }

  server.on("/", handleRoot);

  server.on("/inline", [](){ // deixa o servidor ligado
    server.send(200, "text/plain", "this works as well");
  });

  server.onNotFound(handleNotFound);

  server.begin(); // server ativo
  Serial.println("Servidor iniciado");
}

void loop(void){
  server.handleClient(); //sempre ouvindo conexao
}