i m beginner i have this code to send temperature and humidity from esp32 to firebase and i got this problem
FAILED
REASON: missing required credentials e.g., database URL, host and tokens.
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#include <WiFi.h>
#include <FirebaseESP32.h>
#include <DHT.h>
#define FIREBASE_HOST "https://laddi1-default-rtdb.firebaseio.com/" //Without <a href="http:// or"> http:// or </a> <a href="https:// schemes"> https:// schemes</a>
#define FIREBASE_AUTH " AIzaSyC-5l5qN3e7UL4cFI2Pi_UOxsnEOeuVKu8 "
#define WIFI_SSID "TP-LINK_4206DF"
#define WIFI_PASSWORD "20172018"
#define DHTPIN 27 // Connect Data pin of DHT to D2
int led = 25; // Connect LED to D5
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
//Define FirebaseESP8266 data object
FirebaseData firebaseData;
FirebaseData ledData;
FirebaseJson json;
FirebaseConfig config;
FirebaseAuth auth;
void setup()
{
Serial.begin(115200);
dht.begin();
pinMode(led,OUTPUT);
WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
Serial.print("Connecting to Wi-Fi");
while (WiFi.status() != WL_CONNECTED)
{
Serial.print(".");
delay(300);
}
Serial.println();
Serial.print("Connected with IP: ");
Serial.println(WiFi.localIP());
Serial.println();
config.api_key = FIREBASE_AUTH;
config.database_url = FIREBASE_HOST;
Firebase.begin(&config, &auth);
Firebase.reconnectWiFi(true);
}
void sensorUpdate(){
// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
float h = dht.readHumidity();
// Read temperature as Celsius (the default)
float t = dht.readTemperature();
// Read temperature as Fahrenheit (isFahrenheit = true)
float f = dht.readTemperature(true);
// Check if any reads failed and exit early (to try again).
if (isnan(h) || isnan(t) || isnan(f)) {
Serial.println(F("Failed to read from DHT sensor!"));
return;
}
Serial.print(F("Humidity: "));
Serial.print(h);
Serial.print(F("% Temperature: "));
Serial.print(t);
Serial.print(F("C ,"));
Serial.print(f);
Serial.println(F("F "));
if (Firebase.setFloat(firebaseData, "/FirebaseIOT/temperature", t))
{
Serial.println("PASSED");
Serial.println("PATH: " + firebaseData.dataPath());
Serial.println("TYPE: " + firebaseData.dataType());
Serial.println("ETag: " + firebaseData.ETag());
Serial.println("------------------------------------");
Serial.println();
}
else
{
Serial.println("FAILED");
Serial.println("REASON: " + firebaseData.errorReason());
Serial.println("------------------------------------");
Serial.println();
}
if (Firebase.setFloat(firebaseData, "/FirebaseIOT/humidity", h))
{
Serial.println("PASSED");
Serial.println("PATH: " + firebaseData.dataPath());
Serial.println("TYPE: " + firebaseData.dataType());
Serial.println("ETag: " + firebaseData.ETag());
Serial.println("------------------------------------");
Serial.println();
}
else
{
Serial.println("FAILED");
Serial.println("REASON: " + firebaseData.errorReason());
Serial.println("------------------------------------");
Serial.println();
}
}
void loop() {
sensorUpdate();
if (Firebase.getString(ledData, "/FirebaseIOT/led")){
Serial.println(ledData.stringData());
if (ledData.stringData() == "1") {
digitalWrite(led, HIGH);
}
else if (ledData.stringData() == "0"){
digitalWrite(led, LOW);
}
}
delay(5000);
} >
