#include <RTClib.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

Adafruit_SSD1306 display = Adafruit_SSD1306(128,64, &Wire, -1);
RTC_DS1307 rtc;

char daysOfTheWeek[7][12] = {
  "Sunday",
  "Monday",
  "Tuesday",
  "Wednesday",
  "Thursday",
  "Friday",
  "Saturday"
};
const char* AMPM = 0;
int h=2,m=20;
int RL = 3;

void setup () {
  Serial.begin(9600);
  pinMode(RL,OUTPUT);

  // SETUP RTC MODULE
  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    while (1);
  }

  // automatically sets the RTC to the date & time on PC this sketch was compiled
  rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));

  // manually sets the RTC with an explicit date & time, for example to set
  // January 21, 2021 at 3am you would call:
  // rtc.adjust(DateTime(2021, 1, 21, 3, 0, 0));

  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.display();
  delay(100);
  display.clearDisplay();
  display.display();
  display.setTextSize(1.75);
  display.setTextColor(WHITE);

}

void loop () {
  DateTime now = rtc.now();
  Serial.print("Date & Time: ");
  Serial.print(now.year(), DEC);
  Serial.print('/');
  Serial.print(now.month(), DEC);
  Serial.print('/');
  Serial.print(now.day(), DEC);
  Serial.print(" (");
  Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);
  Serial.print(") ");
  Serial.print(now.hour(), DEC);
  Serial.print(':');
  Serial.print(now.minute(), DEC);
  Serial.print(':');
  Serial.println(now.second(), DEC);
  //========================================
  display.setCursor(0, 0);
  display.clearDisplay();
  display.setTextSize(1);
  display.setCursor(0, 0);
  display.print("Time: ");
  if(now.hour()<10)
  {
    display.print("0");
    display.print(now.hour(), DEC);
  }
  else{display.print(now.hour(), DEC);}
  display.print(':');
  if(now.minute()<10)
  {
    display.print("0");
    display.print(now.minute(), DEC);
  }
  else{display.print(now.minute(), DEC);}
  display.print(':');
  if(now.second()<10)
  {
    display.print("0");
    display.print(now.second(), DEC);
  }
  else{display.print(now.second(), DEC);}
  if(now.hour()<12)
  {
    AMPM = "AM";
  }
  else{AMPM = "PM";}
  display.print(" ");
  display.print(AMPM);
  //==========================================
  display.setTextSize(1);
  display.setCursor(0, 10);
  display.print("Date: ");
  display.print(now.day(), DEC);
  display.print('/');
  display.print(now.month(), DEC);
  display.print('/');
  display.print(now.year(), DEC);
  display.setTextSize(1);
  display.setCursor(0, 20);
  display.print("Day : ");
  display.print(daysOfTheWeek[now.dayOfTheWeek()]);
  display.display();
  delay(1000); // delay 1 seconds

  if(h == now.hour() && m == now.minute())
  {
    digitalWrite(RL,1);
  }
  else{digitalWrite(RL,0);}
}