TrickSumo/Read Data From Firebase RealTime Database Using NodeMCU ESP8266

## Read Data From Firebase RealTime Database Using NodeMCU ESP8266
/*

 Created by:- Rishi Tiwari
 Website:- TrickSumo.com
 Video Tutorial:- https://youtu.be/nLzC0-VaqDs

 Libraries used:-

https://github.com/mobizt/Firebase-ESP8266/

*/

#include <ESP8266WiFi.h>
#include <FirebaseESP8266.h>

#define FIREBASE_HOST "test.firebaseio.com"                     //Your Firebase Project URL goes here without "http:" , "\" and "/"
#define FIREBASE_AUTH "83Z6iVjTlxjfhjsgjhwerhwqweZxrTXiy0C9" //Your Firebase Database Secret goes here

#define WIFI_SSID "Wifiname-here"                                               //your WiFi SSID for which yout NodeMCU connects
#define WIFI_PASSWORD "Wifipassword-here"                                      //Password of your wifi network


// Declare the Firebase Data object in the global scope
FirebaseData firebaseData;

// Declare global variable to store value
int val=0;


void setup() {

  Serial.begin(115200);                                                      // Select the same baud rate if you want to see the datas on Serial Monitor

  Serial.println("Serial communication started\n\n");

  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);                                     //try to connect with wifi
  Serial.print("Connecting to ");
  Serial.print(WIFI_SSID);


  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }


  Serial.println();
  Serial.print("Connected to ");
  Serial.println(WIFI_SSID);
  Serial.print("IP Address is : ");
  Serial.println(WiFi.localIP());                                            //print local IP address
  Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);   // connect to firebase

  Firebase.reconnectWiFi(true);
  delay(1000);
}

void loop() {


// Firebase Error Handling And Reading Data From Specified Path ************************************************

if (Firebase.getInt(firebaseData, "/data")) {                           // On successful Read operation, function returns 1

    if (firebaseData.dataType() == "int") {                            // print read data if it is integer

      val = firebaseData.intData();
      Serial.println(val);
      Serial.println("\n Change value at firebase console to see changes here.");
      delay(10000);

    }

  } else {
    Serial.println(firebaseData.errorReason());
  }
 }


/* NOTE:
 *  To read value, command is ===> Firebase.getInt(firebaseData, "path"); variable = firebaseData.intData();
 *
 *  Example                   ===>  Firebase.setInt(firebaseData, "/data", val); val = firebaseData.intData();
 */
	/*

	Created by:- Rishi Tiwari
	Website:- TrickSumo.com
	Video Tutorial:- https://youtu.be/nLzC0-VaqDs

	Libraries used:-

	https://github.com/mobizt/Firebase-ESP8266/

	*/

	#include <ESP8266WiFi.h>
	#include <FirebaseESP8266.h>

	#define FIREBASE_HOST "test.firebaseio.com" //Your Firebase Project URL goes here without "http:" , "\" and "/"
	#define FIREBASE_AUTH "83Z6iVjTlxjfhjsgjhwerhwqweZxrTXiy0C9" //Your Firebase Database Secret goes here

	#define WIFI_SSID "Wifiname-here" //your WiFi SSID for which yout NodeMCU connects
	#define WIFI_PASSWORD "Wifipassword-here" //Password of your wifi network


	// Declare the Firebase Data object in the global scope
	FirebaseData firebaseData;

	// Declare global variable to store value
	int val=0;


	void setup() {

	Serial.begin(115200); // Select the same baud rate if you want to see the datas on Serial Monitor

	Serial.println("Serial communication started\n\n");

	WiFi.begin(WIFI_SSID, WIFI_PASSWORD); //try to connect with wifi
	Serial.print("Connecting to ");
	Serial.print(WIFI_SSID);



	while (WiFi.status() != WL_CONNECTED) {
	Serial.print(".");
	delay(500);
	}


	Serial.println();
	Serial.print("Connected to ");
	Serial.println(WIFI_SSID);
	Serial.print("IP Address is : ");
	Serial.println(WiFi.localIP()); //print local IP address
	Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH); // connect to firebase

	Firebase.reconnectWiFi(true);
	delay(1000);
	}

	void loop() {


	// Firebase Error Handling And Reading Data From Specified Path ************************************************

	if (Firebase.getInt(firebaseData, "/data")) { // On successful Read operation, function returns 1

	if (firebaseData.dataType() == "int") { // print read data if it is integer

	val = firebaseData.intData();
	Serial.println(val);
	Serial.println("\n Change value at firebase console to see changes here.");
	delay(10000);

	}

	} else {
	Serial.println(firebaseData.errorReason());
	}
	}


	/* NOTE:
	* To read value, command is ===> Firebase.getInt(firebaseData, "path"); variable = firebaseData.intData();
	*
	* Example ===> Firebase.setInt(firebaseData, "/data", val); val = firebaseData.intData();
	*/