ESP32-C3 XIAO 1.3inch OLED Display TDS Sensor Firebase WiFi Setup

#include <Wire.h>    //default library
#include <U8g2lib.h> //https://github.com/olikraus/U8g2_Arduino
#include <WiFi.h>
#include <FirebaseESP32.h> //https://github.com/mobizt/Firebase-ESP8266
#include <addons/TokenHelper.h>
#include <addons/RTDBHelper.h>
#include <WiFiManager.h>    // https://github.com/tzapu/WiFiManager


U8G2_SSD1306_128X64_NONAME_F_HW_I2C DISPB(U8G2_R0, U8X8_PIN_NONE);

#define SDA             4
#define SCL             5
#define TDS_SENSOR_PIN  A0

String WIFI_SSID = "Device [Setup WiFi]";
#define API_KEY "AIzaSyCzMchetkDlrD-9YdZ4KuTiigAfjzPUl14"
#define USER_EMAIL "[email protected]"
#define USER_PASSWORD "Password123456789"
#define DATABASE_URL "ai-glucose-tool-default-rtdb.firebaseio.com"
#define DATABASE_SECRET "rLsxPgTD8YY8NaiOkWVjwjZzhi3kS8F3fDCpbHZX"

FirebaseData fbdo;
FirebaseAuth auth;
FirebaseConfig config;
unsigned long dataMillis = 0;
int count = 0;

int tdsValue = 0;
float tds = 0;





void setup() {
  Serial.begin(115200);
  setupDisplay();
  connect_To_WiFi();
  connectingToFirebaseDatabase();
}

void loop() {
  reConnect_To_WiFi();
  readSensor();
  showDataOnSerialMonitor();
  showDataOnDisplay();
  sendingDataToFirebase(5);
  delay(1000);
}








void setupDisplay() {
  pinMode(SDA, OUTPUT);
  pinMode(SCL, OUTPUT);
  Wire.setClock(100000);
  DISPB.setBusClock(100000);
  DISPB.setI2CAddress(0x78);
  DISPB.begin();
  DISPB.setFont(u8g2_font_logisoso16_tf ); //smaller font to show difference
  DISPB.clearBuffer();
}

void readSensor() {
  tdsValue = analogRead(TDS_SENSOR_PIN);
  tds = tdsValue * 0.5;
}

void showDataOnSerialMonitor() {
  Serial.print("TDS Value: ");
  Serial.print(tds);
  Serial.println(" ppm");
}

void showDataOnDisplay() {
  DISPB.clearBuffer();
  DISPB.setCursor(0, 31);
  DISPB.print("TDS Value:");
  DISPB.setCursor(10, 63);
  DISPB.print(tds);
  DISPB.print(" ml");
  DISPB.sendBuffer();
}

void connectingToFirebaseDatabase() {
  Serial.printf("Firebase Client v%s\n\n", FIREBASE_CLIENT_VERSION);
  config.api_key = API_KEY;
  auth.user.email = USER_EMAIL;
  auth.user.password = USER_PASSWORD;
  config.database_url = DATABASE_URL;
  Firebase.reconnectWiFi(true);
  fbdo.setResponseSize(4096);
  String base_path = "/UsersData/";
  config.token_status_callback = tokenStatusCallback; // see addons/TokenHelper.h
  config.max_token_generation_retry = 5;
  Firebase.begin(&config, &auth);
  String var = "$userId";
  String val = "($userId === auth.uid && auth.token.premium_account === true && auth.token.admin === true)";
  Firebase.setReadWriteRules(fbdo, base_path, var, val, val, DATABASE_SECRET);
}


void sendingDataToFirebase(unsigned long timeDelay) {
  if (millis() - dataMillis > (timeDelay * 1000) && Firebase.ready())
  {
    dataMillis = millis();
    String path = "/UsersData/";
    path += auth.token.uid.c_str(); //<- user uid of current user that sign in with Emal/Password
    path += "/test/TDS";
    Serial.printf("Set TDS... %s\n", Firebase.setFloat(fbdo, path, tds) ? "ok" : fbdo.errorReason().c_str());
  }
}


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

void connect_To_WiFi() {
  WiFiManager wm;
  bool res;
  res = wm.autoConnect(WIFI_SSID.c_str()); // password protected ap

  if (!res) {
    Serial.println("Failed to Connect!!");
    // ESP.restart();
  }
  else {
    //if you get here you have connected to the WiFi
    Serial.println("Connected...");
  }
}