├── README.md
└── ESP32-Firebase-Demo.ino


/README.md:
--------------------------------------------------------------------------------
1 | # ESP32-Firebase-Demo
2 | In this repository, you'll find the codebase that accompanies our YouTube tutorial, "Empower Your IoT: Control Devices Anywhere with Google Firebase & ESP32!" The code is organized into clear and well-documented sections, making it easy for developers of all levels to understand and implement.
3 | 


--------------------------------------------------------------------------------
/ESP32-Firebase-Demo.ino:
--------------------------------------------------------------------------------
 1 | #include <WiFi.h>
 2 | #include <Firebase_ESP_Client.h>
 3 | 
 4 | /* 1. Define the WiFi credentials */
 5 | #define WIFI_SSID "Your_SSID"
 6 | #define WIFI_PASSWORD "YOUR_PASSWORD"
 7 | 
 8 | /* 2. Define the API Key */
 9 | #define API_KEY "YOUR_API_KEY"
10 | 
11 | /* 3. Define the RTDB URL */
12 | #define DATABASE_URL "YOUR_RTDB_URL" 
13 | 
14 | /* 4. Define the user Email and password that alreadey registerd or added in your project */
15 | #define USER_EMAIL "user_email"
16 | #define USER_PASSWORD "user_password"
17 | 
18 | // Define Firebase Data object
19 | FirebaseData fbdo;
20 | 
21 | FirebaseAuth auth;
22 | FirebaseConfig config;
23 | 
24 | unsigned long sendDataPrevMillis = 0;
25 | 
26 | const int ledPin = 4;
27 | 
28 | void setup()
29 | {
30 |   pinMode(ledPin, OUTPUT);
31 |   digitalWrite(ledPin, LOW);
32 | 
33 |   Serial.begin(115200);
34 |   WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
35 | 
36 |   Serial.print("Connecting to Wi-Fi");
37 |   while (WiFi.status() != WL_CONNECTED)
38 |   {
39 |     Serial.print(".");
40 |     delay(300);
41 |   }
42 |   Serial.println();
43 |   Serial.print("Connected with IP: ");
44 |   Serial.println(WiFi.localIP());
45 |   Serial.println();
46 | 
47 |   /* Assign the api key (required) */
48 |   config.api_key = API_KEY;
49 | 
50 |   /* Assign the user sign in credentials */
51 |   auth.user.email = USER_EMAIL;
52 |   auth.user.password = USER_PASSWORD;
53 | 
54 |   /* Assign the RTDB URL (required) */
55 |   config.database_url = DATABASE_URL;
56 | 
57 |   // Comment or pass false value when WiFi reconnection will control by your code or third party library e.g. WiFiManager
58 |   Firebase.reconnectNetwork(true);
59 | 
60 |   // Since v4.4.x, BearSSL engine was used, the SSL buffer need to be set.
61 |   // Large data transmission may require larger RX buffer, otherwise connection issue or data read time out can be occurred.
62 |   fbdo.setBSSLBufferSize(4096 /* Rx buffer size in bytes from 512 - 16384 */, 1024 /* Tx buffer size in bytes from 512 - 16384 */);
63 | 
64 |   // Limit the size of response payload to be collected in FirebaseData
65 |   fbdo.setResponseSize(2048);
66 | 
67 |   Firebase.begin(&config, &auth);
68 | 
69 |   Firebase.setDoubleDigits(5);
70 | 
71 |   config.timeout.serverResponse = 10 * 1000;
72 | }
73 | 
74 | void loop()
75 | {
76 |   // Firebase.ready() should be called repeatedly to handle authentication tasks.
77 |   if (Firebase.ready() && (millis() - sendDataPrevMillis > 1000 || sendDataPrevMillis == 0))
78 |   {
79 |     sendDataPrevMillis = millis();
80 | 
81 |   int ledState;
82 |    if(Firebase.RTDB.getInt(&fbdo, "/led/state", &ledState)){
83 |     digitalWrite(ledPin, ledState);
84 |    }else{
85 |     Serial.println(fbdo.errorReason().c_str());
86 |    }
87 |   }
88 | }


--------------------------------------------------------------------------------