#include <Keypad.h>
#include <LiquidCrystal_I2C.h>
int R1 = 2;
int R2 = 3;
int R3 = 4;
int R4 = 5;
int i = 0;
int sec = 0;

#define DITEKAN LOW
#define BOUNCE  100
/* LCD setup */
LiquidCrystal_I2C lcd_1 = LiquidCrystal_I2C(0x27, 16, 2);

/* Keypad setup */
const byte KEYPAD_ROWS = 4;
const byte KEYPAD_COLS = 4;
byte rowPins[KEYPAD_ROWS] = {12, 11, 10, 9};
byte colPins[KEYPAD_COLS] = {A3, A2, A1, A0};
char keys[KEYPAD_ROWS][KEYPAD_COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};

Keypad customKeypad = Keypad(makeKeymap(keys), rowPins, colPins, KEYPAD_ROWS, KEYPAD_COLS);

void setup() {
  
  lcd_1.begin(16, 2);
  Serial.begin(9600);
  pinMode(R1, OUTPUT);
  pinMode(R2, OUTPUT);
  pinMode(R3, OUTPUT);
  pinMode(R4, OUTPUT);

}

void loop() {

  char customKey = customKeypad.getKey();
  switch(customKey){
    case '1':
      isi();
      break;
    case '2':
      buang();
      break;  
    case '3':
      manual();
      break; 
  }
 
}
void isi() {
    lcd_1.setCursor(0, 0);
    lcd_1.print("  MENGISI AIR   ");
    lcd_1.setCursor(0, 1);
    lcd_1.print("                 ");
   for( int i=1; i<=20; i++ ) {
    
    lcd_1.setCursor(0, 1);
    lcd_1.print("480 Detik  [   ] ");
    lcd_1.setCursor(12, 1);
    lcd_1.print(i);
    digitalWrite(R1, HIGH);
    delay(1000);
   }
    delay(1000);
    digitalWrite(R1, LOW);
    lcd_1.setCursor(0, 0);
    lcd_1.print("    SELESAI     ");
    delay(5000);
    lcd_1.clear();
}
void buang() {
    lcd_1.setCursor(0, 0);
    lcd_1.print("  BUANG AIR   ");
    lcd_1.setCursor(0, 1);
    lcd_1.print("                 ");
   for( int i=1; i<=20; i++ ) {
    
    lcd_1.setCursor(0, 1);
    lcd_1.print("480 Detik  [   ] ");
    lcd_1.setCursor(12, 1);
    lcd_1.print(i);
    digitalWrite(R2, HIGH);
    delay(1000);
   }
    delay(1000);
    digitalWrite(R2, LOW);
    lcd_1.setCursor(0, 0);
    lcd_1.print("    SELESAI     "); 
    delay(5000);
    lcd_1.clear();
}
void manual(){
    lcd_1.setCursor(0, 0);
    lcd_1.print(" SEDANG MENCUCI ");
    lcd_1.setCursor(0, 1);
    lcd_1.print("30 Cycle  [    ]");

   for ( int i=1; i<=5; i++ ) {
    lcd_1.setCursor(12, 1);
    lcd_1.print(i);
    digitalWrite(R3, HIGH);
    delay(2000);
    digitalWrite(R3, LOW);
    delay(7000);
    digitalWrite(R4, HIGH);
    delay(2000);
    digitalWrite(R4, LOW);
    delay(7000); 
}
    lcd_1.clear(); 
    lcd_1.setCursor(0, 0);
    lcd_1.print("    SELESAI         ");
    lcd_1.setCursor(0, 1);
    lcd_1.print("                     ");
    delay(5000);
    lcd_1.clear();
}