code_arduino.ino

#include<Servo.h>
#include<ESP8266WiFi.h>
#include "FirebaseESP8266.h"
// Provide the RTDB payload printing info and other helper functions.
#include <addons/RTDBHelper.h>

#include<ArduinoJson.h>
#define WIFI_SSID "LQHOMES-155NVT-203"
#define WIFI_PASSWORD "62778763"
#define DATABASE_URL "iot-ptit-61e0e-default-rtdb.firebaseio.com"
#define FIREBASE_AUTH "A0oQYNoqbaPuw8hx5BGWor0eDuN6synXyALS9jap"

FirebaseData firebaseData;
// WiFiClient client;
/* 4, Define the FirebaseAuth data for authentication data */
FirebaseAuth auth;
/* Define the FirebaseConfig data for config data */
FirebaseConfig config;

String path = "/";
FirebaseJson json;

// dong co moter
Servo myServo;

unsigned long t1 = 0;
// Biến để lưu giá trị từ Firebase
String action;


void setup(){
  // khởi tạo nơi in
  Serial.begin(115200);
  // nút cắm động cơ
  myServo.attach(D4);
  myServo.write(0);
  // kết nối wifi
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  
  while(WiFi.status() != WL_CONNECTED){
    delay(5000);
    Serial.print(".");
    Serial.println();
  }
  Serial.print("Connect with IP: ");
  Serial.println(WiFi.localIP());
  Serial.println();

  /* Assign the database URL(required) */
  config.database_url = DATABASE_URL;

  config.signer.test_mode = true;
  // Comment or pass false value when WiFi reconnection will control by your code or third party library e.g. WiFiManager
  Firebase.reconnectNetwork(true);
  /* Initialize the library with the Firebase authen and config */
  Firebase.begin(&config, &auth);

}

void mocua(){
  myServo.write(180);
}
void dongcua(){
  myServo.write(0);
}

void loop(){
  // Firebase.setString(firebaseData, path+"action", "Damocua");
  
  // if(millis()-t1 > 1000){
  //   if(Firebase.getString(firebaseData, path + "action")){
  //     action = firebaseData.stringData();
  //     Serial.println(action);
  //   }
  //   t1 = millis();

  // }
  if(millis()-t1 > 1000){
      if(Firebase.getString(firebaseData, path + "action")){
      action = firebaseData.stringData();
      Serial.println(action);
      if(action == "mocua"){
        mocua();
        Firebase.setString(firebaseData, path+"action", "damocua");
      }
      if(action == "dongcua"){
        dongcua();
        Firebase.setString(firebaseData, path+"action", "dadongcua");
      }
    }
    t1 = millis();
  }
  


}