heroku_NodeJS_ESP8266Led.ino

#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
#include <ESP8266HTTPClient.h>
#define USE_SERIAL Serial
ESP8266WiFiMulti WiFiMulti;

void setup() {
  USE_SERIAL.begin(115200);
  // USE_SERIAL.setDebugOutput(true);
  pinMode(LED_BUILTIN, OUTPUT);

  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("wifi_adi", "sifre");
}

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

    HTTPClient http;

    USE_SERIAL.print("[HTTP] begin...\n");
    //Heroku link
    http.begin("http://hacknbreak-iot.herokuapp.com/oku/"); //HTTP
    USE_SERIAL.print("[HTTP] GET...\n");
    int httpCode = http.GET();

    if (httpCode > 0) {
      USE_SERIAL.printf("[HTTP] GET... code: %d\n", httpCode);

      // file found at server
      if (httpCode == HTTP_CODE_OK) {
        String payload = http.getString();
        USE_SERIAL.println(payload);
        //Heroku dan okunan deger
        int state = payload.toInt();
        USE_SERIAL.printf("LED STATE %d\n", state);
        digitalWrite(LED_BUILTIN, state);
      }
    } else {
      USE_SERIAL.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
    }

    http.end();
  }
  //Heroku için 100ms biraz çok gelebilir :)
  delay(100);
}