#include <WiFi.h>
#include <TimeLib.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>


LiquidCrystal_I2C lcd = LiquidCrystal_I2C(0x27, 16, 2);
 
#define NTP_SERVER     "pool.ntp.org"
#define UTC_OFFSET     3600
#define UTC_OFFSET_DST 3600
 
void spinner() {
  static int8_t counter = 0;
  const char* glyphs = "\xa1\xa5\xdb";
  lcd.setCursor(15, 1);
  lcd.print(glyphs[counter++]);
  if (counter == strlen(glyphs)) {
    counter = 0;
  }
}
 
void printLocalTime() {
  struct tm timeinfo;
  if (!getLocalTime(&timeinfo)) {
    lcd.setCursor(0, 1);
    lcd.println("Connection Err");
    return;
  }
 
  lcd.setCursor(8, 0);
  lcd.println(&timeinfo, "%H:%M:%S");
 
  lcd.setCursor(0, 1);
  lcd.println(&timeinfo, "%d/%m/%Y   %Z");
}
 
void setup() {
  Serial.begin(115200);
 
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Connecting to ");
  lcd.setCursor(0, 1);
  lcd.print("WiFi ");
 
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(250);
    spinner();
  }
 
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
 
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.println("Online");
  lcd.setCursor(0, 1);
  lcd.println("Updating time...");
 
  configTime(UTC_OFFSET, UTC_OFFSET_DST, NTP_SERVER);
}
 
void loop() {
  printLocalTime();
  delay(250);
}