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

const int pinStart = 3; //pin button mulai
const int pinReset = 2; // pin button reset
const int pinLedHijau = 4; // LED hijau
const int pinLedMerah = 5; //LED merah
const int pinLedKuning = 12;
const int pinLedBiru = 13;
const int pinLedUngu = A2;
const int pinBuzzer = 6; // Bunyi Alarm
const int pinRelay1 = 7; // Relay urine
const int pinRelay2 = 8; // relay bittern
const int pinRelay3 = 9; //relay motor

const int pinTrig = 10; // untuk trig ultrasonic
const int pinEcho = 11; //untuk echo ultrasonic
long timer;
int jarak;

int tombolStart = 0;//pendefinisian awal tombol start
int tombolReset = 0;//pendefinisian awal tombol reset

LiquidCrystal_I2C lcd(0x27, 16, 2); //pemanggilan alamat lcd 16 x 2

void setup() {
  // put your setup code here, to run once:
  
Serial.begin(9600);

  lcd.init(); // untuk strat LCD
  lcd.backlight(); // unntuk hidupkan LCD

 pinMode (pinStart, INPUT_PULLUP);// untuk button start
 pinMode (pinReset, INPUT_PULLUP);// untuk button Reset

 pinMode (pinLedHijau, OUTPUT);//untuk LED Hijau
 pinMode (pinLedKuning, OUTPUT);//untuk LED kuning
 pinMode (pinLedBiru, OUTPUT);//untuk LED Hijau
 pinMode (pinLedUngu, OUTPUT);//untuk LED Hijau
 pinMode (pinLedMerah, OUTPUT);// untuk LED merah

 pinMode (pinBuzzer, OUTPUT);// untuk bunyi alarm

 pinMode (pinRelay1, OUTPUT);// untuk relay urine
 pinMode (pinRelay2, OUTPUT);// untuk relay bittern
 pinMode (pinRelay3, OUTPUT); // untuk relay motor

 pinMode (pinEcho, INPUT); //mendeteksi jarak dari ultrasonic
 pinMode (pinTrig, OUTPUT); // hasil dari jaraknya
 

}

void loop() {

  tombolStart = digitalRead(pinStart);
 (digitalRead(tombolStart));
  
  if (tombolStart == LOW)
  {
    //pengukuran ultrasonic

        //untuk pengukuran jarak
        digitalWrite (pinTrig, HIGH);
        delay(10);
        digitalWrite (pinTrig, LOW);

      timer = pulseIn (pinEcho, HIGH);
      jarak = timer/58;
  
    lcd.clear();
    lcd.setCursor (2,0);
    lcd.print("ALAT DIMULAI");
          for(int i= 0; i <= 100; i++)// loading 100%
          {
          lcd.setCursor (6,1);
          if (i<100)
            {
              lcd.print(" ");
            }
          if (i<10)
            {
            lcd.print(" ");
            }
          lcd.print(i);
          lcd.print("%");
          delay(50);
          }
    delay (100);

  //definisi menurut pengukuran dari ultrasonic

          if (jarak >= 0 && jarak <= 30){
          //Pemberitahuan ke user waterpump urine ON
          lcd.clear();
          lcd.setCursor (0,0);
          lcd.print("PENGISIAN URINE");
          digitalWrite(pinLedHijau, HIGH);
          analogWrite(pinRelay1, 255);
          delay (5000);
          digitalWrite(pinLedHijau, LOW);
          analogWrite(pinRelay1, 0);
          lcd.clear();

//lanjut pengisian bittern

          lcd.setCursor (2,0);
            lcd.print("PENGISIAN ");
            lcd.setCursor (3,1);
            lcd.print("BITTERN");
            digitalWrite(pinLedKuning, HIGH);
            analogWrite(pinRelay2, 255);
            delay (5000);
            digitalWrite(pinLedKuning, LOW);
            analogWrite(pinRelay2, 0);
            lcd.clear();

//lanjut pengadukan

            lcd.setCursor (2,0);
            lcd.print("PENGADUKAN ON");
            digitalWrite(pinLedBiru, HIGH);
            analogWrite(pinRelay3, 255);
            delay (5000);
            digitalWrite(pinLedBiru, LOW);
            analogWrite(pinRelay3, 0);
            lcd.clear();

//Pemberitahuan ke user Masukkan NaOH

            lcd.clear();
            lcd.setCursor (2,0);
            lcd.print("MASUKKAN NAOH");
            digitalWrite(pinLedUngu, HIGH);
            delay (5000);
            digitalWrite(pinLedUngu, LOW);
            lcd.clear();

          return;
          }

        else if (jarak >= 30 && jarak <= 60){
            //Pemberitahuan ke user waterpump Bittern ON
            lcd.clear();
            lcd.setCursor (2,0);
            lcd.print("PENGISIAN ");
            lcd.setCursor (3,1);
            lcd.print("BITTERN");
            digitalWrite(pinLedKuning, HIGH);
            analogWrite(pinRelay2, 255);
            delay (5000);
            digitalWrite(pinLedKuning, LOW);
            analogWrite(pinRelay2, 0);
            lcd.clear();

//Pemberitahuan ke user  Motor pengaduk ON

            lcd.setCursor (2,0);
            lcd.print("PENGADUKAN ON");
            digitalWrite(pinLedBiru, HIGH);
            analogWrite(pinRelay3, 255);
            delay (5000);
            digitalWrite(pinLedBiru, LOW);
            analogWrite(pinRelay3, 0);
            lcd.clear();

//Pemberitahuan ke user Masukkan NaOH

            lcd.clear();
            lcd.setCursor (2,0);
            lcd.print("MASUKKAN NAOH");
            digitalWrite(pinLedUngu, HIGH);
            delay (5000);
            digitalWrite(pinLedUngu, LOW);
            lcd.clear();
            return;
            }

        else if (jarak >= 60){
            //Pemberitahuan ke user  Motor pengaduk ON
            lcd.clear();
            lcd.setCursor (2,0);
            lcd.print("PENGADUKAN ON");
            digitalWrite(pinLedBiru, HIGH);
            analogWrite(pinRelay3, 255);
            delay (5000);
            digitalWrite(pinLedBiru, LOW);
            analogWrite(pinRelay3, 0);
            lcd.clear();

            //Pemberitahuan ke user Masukkan NaOH
            lcd.clear();
            lcd.setCursor (2,0);
            lcd.print("MASUKKAN NAOH");
            digitalWrite(pinLedUngu, HIGH);
            delay (5000);
            digitalWrite(pinLedUngu, LOW);
            lcd.clear();
            return;
        }

  }
     else if (tombolStart == HIGH ){
      
    lcd.setCursor (2,0);
    lcd.print("Tekan Tombol");
    delay(100);
     }

  
}