#include "RTClib.h"
#include <TM1637Display.h>

// Define the connections pins for TM1637 4 digit 7 segment display
#define CLK 8
#define DIO 9

// Define the connections pin for DS3231 RTC Module
// SCL - A5
// SDA - A4
// VCC - VCC
// GNG - GND

// Create rtc and display object
RTC_DS3231 rtc;
TM1637Display display = TM1637Display(CLK, DIO);

void setup() {
  // Begin serial communication at a baud rate of 9600
  Serial.begin(9600);
  // Wait for console opening
  delay(3000);

  // Check if RTC is connected correctly
  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  // Check if the RTC lost power and if so, set the time:
  if (rtc.lostPower()) {
    Serial.println("RTC lost power, lets set the time!");
    // Set the RTC with an explicit date & time
    rtc.adjust(DateTime(2024, 6, 12, 12, 0, 0)); // Set to June 12, 2024, 12:00:00
  }

  // Set the display brightness (0-7):
  display.setBrightness(5);
  // Clear the display:
  display.clear();
}

void loop() {
  // Get current date and time
  DateTime now = rtc.now();
  // Create time format to display:
  int displaytime = (now.hour() * 100) + now.minute();
  // Print displaytime to the Serial Monitor
  Serial.println(displaytime);
  // Display the current time in 24 hour format with leading zeros enabled and a center colon:
  display.showNumberDecEx(displaytime, 0b11100000, true);
  // Remove the following lines of code if you want a static instead of a blinking center colon:
  delay(1000);
  display.showNumberDec(displaytime, true); // Prints displaytime without center colon.
  delay(1000);
}