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

#include "RTClib.h"
LiquidCrystal_I2C lcd(0x27, 16, 2); // set the LCD address to 0x27 for a 16 chars and 2 line display

byte LT[8]    = { B00111, B01111, B11111, B11111, B11111, B11111, B11111, B11111};
byte UB[8]    = { B11111, B11111, B11111, B00000, B00000, B00000, B00000, B00000};
byte RT[8]    = { B11100, B11110, B11111, B11111, B11111, B11111, B11111, B11111};
byte LL[8]    = { B11111, B11111, B11111, B11111, B11111, B11111, B01111, B00111};
byte LB[8]    = { B00000, B00000, B00000, B00000, B00000, B11111, B11111, B11111};
byte LR[8]    = { B11111, B11111, B11111, B11111, B11111, B11111, B11110, B11100};
byte MB[8]    = { B11111, B11111, B11111, B00000, B00000, B00000, B11111, B11111};

RTC_DS1307 rtc;

char szTime[9];    // mm:ss\0
char szsecond[4];    // ss

char daysOfTheWeek[7][12] =  {"Minggu", "Senin", "Selasa", "Rabu", "Kamis", "Jumat", "Sabtu"};
char month2str [13][12] = {" ", "Januari", "Februari", "Maret", "April", "Mei", "Juni", "Juli", "Agustus", "September", "Oktober", "November", "Desember"};

void setup()
{
  lcd.init();                      // initialize the lcd
  lcd.createChar(0, LT);
  lcd.createChar(1, UB);
  lcd.createChar(2, RT);
  lcd.createChar(3, LL);
  lcd.createChar(4, LB);
  lcd.createChar(5, LR);
  lcd.createChar(6, MB);
  lcd.backlight();

  Serial.begin(57600);
  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    while (1) delay(10);
  }

  if (! rtc.isrunning()) {
    Serial.println("RTC is NOT running, let's set the time!");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
    // January 21, 2014 at 3am you would call:
    // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
  }
  lcd.clear();
  
}

void loop()
{
  DateTime now = rtc.now();
  static uint32_t lastTime = 0; // millis() memory
  static bool flasher = false;  // seconds passing flasher
  if (millis() - lastTime >= 1000)
  {
    lastTime = millis();
    displayNumber(0, now.hour());
    displayNumber(7, now.minute());
    
    bool f = !flasher;
    flasher = !flasher;
    if (flasher==true){
      lcd.setCursor(6, 0); lcd.write(4);
      lcd.setCursor(6, 1); lcd.write(1);
    }
    else{
      lcd.setCursor(6, 0); lcd.write(254);
      lcd.setCursor(6, 1); lcd.write(254);
    }
    lcd.setCursor(14, 1); lcd.print(now.second());

    Serial.print(now.year(), DEC);
    Serial.print('/');
    Serial.print(month2str[now.month()]);
    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.print(now.second(), DEC);
    Serial.println();
  }
}
void printNumber(int val,int col) {
  if ( val >= 10) {
    printDigits(val / 10, col);
    printDigits(val % 10, col + 3);
  }
  else {
    printDigits(val, col+3);
  }
}

void displayNumber(int col, int waktu) {
  // lcd.clear();
  printNumber(waktu,col);
}

void custom0(int x) { lcd.setCursor(x, 0); lcd.write(0); lcd.write(1); lcd.write(2);   lcd.setCursor(x, 1); lcd.write(3);   lcd.write(4);   lcd.write(5);}
void custom1(int x) { lcd.setCursor(x, 0); lcd.write(1); lcd.write(2); lcd.print(" "); lcd.setCursor(x, 1); lcd.write(4);   lcd.write(255);   lcd.write(4);}
void custom2(int x) { lcd.setCursor(x, 0); lcd.write(6); lcd.write(6); lcd.write(2);   lcd.setCursor(x, 1); lcd.write(3);   lcd.write(4);   lcd.write(4);}
void custom3(int x) { lcd.setCursor(x, 0); lcd.write(6); lcd.write(6); lcd.write(2);   lcd.setCursor(x, 1); lcd.write(4);   lcd.write(4);   lcd.write(5);}
void custom4(int x) { lcd.setCursor(x, 0); lcd.write(3); lcd.write(4); lcd.write(255);   lcd.setCursor(x, 1); lcd.print(" "); lcd.print(" "); lcd.write(255);}
void custom5(int x) { lcd.setCursor(x, 0); lcd.write(3); lcd.write(6); lcd.write(6);   lcd.setCursor(x, 1); lcd.write(4);   lcd.write(4);   lcd.write(5);}
void custom6(int x) { lcd.setCursor(x, 0); lcd.write(0); lcd.write(6); lcd.write(6);   lcd.setCursor(x, 1); lcd.write(3);   lcd.write(4);   lcd.write(5);}
void custom7(int x) { lcd.setCursor(x, 0); lcd.write(1); lcd.write(1); lcd.write(2);   lcd.setCursor(x, 1); lcd.print(" "); lcd.print(" "); lcd.write(255);}
void custom8(int x) { lcd.setCursor(x, 0); lcd.write(0); lcd.write(6); lcd.write(2);   lcd.setCursor(x, 1); lcd.write(3);   lcd.write(4);   lcd.write(5);}
void custom9(int x) { lcd.setCursor(x, 0); lcd.write(0); lcd.write(6); lcd.write(2);   lcd.setCursor(x, 1); lcd.print(" "); lcd.print(" "); lcd.write(255);}

void printDigits(int digits, int x) {
  // utility function for digital clock display: prints preceding colon and leading 0
  switch (digits) {
    case 0:
      custom0(x);
      break;
    case 1:
      custom1(x);
      break;
    case 2:
      custom2(x);
      break;
    case 3:
      custom3(x);
      break;
    case 4:
      custom4(x);
      break;
    case 5:
      custom5(x);
      break;
    case 6:
      custom6(x);
      break;
    case 7:
      custom7(x);
      break;
    case 8:
      custom8(x);
      break;
    case 9:
      custom9(x);
      break;
  }
}