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

#define Led 2
#define Pot A0

RTC_DS1307 rtc;
int pot_value;

char DaysinaWeek[7][12] = {"Minggu", "Senin", "Selasa", "Rabu", "Kamis", "Jumat", "Sabtu"};


LiquidCrystal_I2C lcd(0x27, 20, 4);

void setup() {
  Serial.begin(9600);
  //LED and potensio set up
  pinMode(Led, OUTPUT);
  pinMode(Pot, INPUT);

  //RTC set up
  if (! rtc.begin()) {
    Serial.println("RTC Not reading");
    while (1);
  }

  if (! rtc.isrunning()) {
    Serial.println("RTC is NOT running!");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));//update rtc dari waktu komputer
  }
  // Init
  lcd.init();
  lcd.backlight();

  // Print something
  lcd.setCursor(3, 0);
  lcd.print("Synapsis.ID");
  delay(2000);
  lcd.clear();

}
void LedControl() {
  pot_value = analogRead(Pot);
  pot_value = map(pot_value, 0, 1023, 0, 255);
  analogWrite(Led, pot_value);
  lcd.setCursor(0,0);
  lcd.print("Nilai analog : ");
  lcd.print(pot_value);
  if ( pot_value == 0) {
    lcd.setCursor(0, 1);
    lcd.print("Terang lampu 0%");
  }
  else if (pot_value > 0 && pot_value <= 63) {
    lcd.setCursor(0, 1);
    lcd.print("Terang lampu 25%");
  }
  else if (pot_value > 63 && pot_value <= 127) {
    lcd.setCursor(0, 1);
    lcd.print("Terang lampu 50%");
  }
  else if (pot_value > 127 && pot_value <= 192) {
    lcd.setCursor(0, 1);
    lcd.print("Terang lampu 75%");
  }
  else {
    lcd.setCursor(0, 1);
    lcd.print("Terang lampu 100%");
  }
}


void DisplayTime() {
  lcd.setCursor(0, 2);
  DateTime now = rtc.now();
  lcd.print(DaysinaWeek[now.dayOfTheWeek()]);
  lcd.print(',');
  lcd.print(now.day(), DEC);
  lcd.print('/');
  lcd.print(now.month(), DEC);
  lcd.print('/');
  lcd.print(now.year(), DEC);
  lcd.print(" ");
  lcd.setCursor(0,3);
  lcd.print(now.hour(), DEC);
  lcd.print(':');
  lcd.print(now.minute(), DEC);
  lcd.print(':');
  lcd.print(now.second(), DEC);

}

void loop() {
  LedControl();
  DisplayTime();
}