File server wemosD1 added

#include <ESP8266WiFi.h>

#include <WiFiClient.h>

#include <ESP8266WebServer.h>

#include <ESP8266mDNS.h>

const char* ssid = "Thomas";

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

ESP8266WebServer server(12345);

const int led = LED_BUILTIN;

void handleRoot() {

  server.send(200, "text/plain", "hello from esp8266!");

}

void handleNotFound(){

  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);

}

void setup(void){

  pinMode(led, OUTPUT);

  pinMode(0, OUTPUT);

  digitalWrite(led, LOW);

  digitalWrite(0, LOW);

  Serial.begin(115200);

  WiFi.mode(WIFI_STA);

  WiFi.begin(ssid, password);

  Serial.println("");

  // Wait for connection

  while (WiFi.status() != WL_CONNECTED) {

    delay(500);

    Serial.print(".");

  }

  Serial.println("");

  Serial.print("Connected to ");

  Serial.println(ssid);

  Serial.print("IP address: ");

  Serial.println(WiFi.localIP());

  if (MDNS.begin("iotApriPortone")) {

    Serial.println("MDNS responder started");

  }

  server.on("/", handleRoot);

  server.on("/on", [](){

    server.send(200, "text/plain", "attesa di 2000ms");

    digitalWrite(led, HIGH);

    digitalWrite(0, HIGH);

    delay(2000);

    digitalWrite(led, LOW);

    digitalWrite(0, LOW);

  });

  server.onNotFound(handleNotFound);

  server.begin();

  Serial.println("HTTP server started");

}

unsigned long previousMillis = 0;

const long interval = 1000;

int ledState = LOW;

void loop(void){

  server.handleClient();

  if (WiFi.status() != WL_CONNECTED) {

    Serial.println("NO CONNECTION");

    ESP.restart();

  }

  unsigned long currentMillis = millis();

  if(currentMillis - previousMillis >= interval) {

    previousMillis = currentMillis;   

    if (ledState == LOW)

      ledState = HIGH;  // Note that this switches the LED *off*

    else

      ledState = LOW;   // Note that this switches the LED *on*

    digitalWrite(LED_BUILTIN, ledState);

  }

}