time_commander.ino

#include <Arduino.h>

#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>

#include <ESP8266HTTPClient.h>

#define USE_SERIAL Serial

ESP8266WiFiMulti WiFiMulti;

String payload, payload2, payload_old;

void setup() {

  USE_SERIAL.begin(115200);

  USE_SERIAL.println();
  USE_SERIAL.println();
  USE_SERIAL.println();

  for (uint8_t t = 4; t > 0; t--) {
    USE_SERIAL.printf("[SETUP] WAIT %d...\n", t);
    USE_SERIAL.flush();
    delay(1000);
  }

  WiFiMulti.addAP("", "");

}

void loop() {
  // wait for WiFi connection
  if ((WiFiMulti.run() == WL_CONNECTED)) {

    HTTPClient http;

    USE_SERIAL.print("[HTTP] begin...\n");
    http.begin("http://www.xxxxxxxxxxxxxxxxxxxx.com/arduino/time_commander.php"); //HTTP

    USE_SERIAL.print("[HTTP] GET...\n");
    // start connection and send HTTP header
    int httpCode = http.GET();

    // httpCode will be negative on error
    if (httpCode > 0) {
      // HTTP header has been send and Server response header has been handled
      USE_SERIAL.printf("[HTTP] GET... code: %d\n", httpCode);

      // file found at server
      if (httpCode == HTTP_CODE_OK) {
        payload = http.getString();
        USE_SERIAL.println(payload);

        if (payload != payload_old) {


          USE_SERIAL.print("inizio ...  ");
          USE_SERIAL.print(payload);
          http.begin(payload); //HTTP

          USE_SERIAL.print("[HTTP] GET...\n");
          // start connection and send HTTP header
          int httpCode = http.GET();

          // httpCode will be negative on error
          if (httpCode > 0) {
            // HTTP header has been send and Server response header has been handled
            USE_SERIAL.printf("[HTTP] GET... code: %d\n", httpCode);

            // file found at server
            if (httpCode == HTTP_CODE_OK) {
              payload2 = http.getString();
              USE_SERIAL.println(payload2);



              payload_old = payload;

            }

          } else {
            USE_SERIAL.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
          }


        } else {

          USE_SERIAL.print("stesso messaggio, ora basta");
        }



      }
    } else {
      USE_SERIAL.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
    }



    http.end();
  }

  delay(10000);
}