#include        <Keypad.h>
#include        <Wire.h> 
#include        <LiquidCrystal_I2C.h>
#define         buttonStart           13
#define         relay1                4
#define         relay2                3
#define         relay3                2

unsigned long   time_now,             time_before;
unsigned long   time_now1,            time_before1;
const int       time_sensor           = 100;
const int       time_relay            = 300;

const byte      ROWS                  = 4; 
const byte      COLS                  = 4; 
char            hexaKeys[ROWS][COLS]  = {
                                        {'1','2','3','A'},
                                        {'4','5','6','B'},
                                        {'7','8','9','C'},
                                        {'*','0','#','D'}
                                                        };
byte rowPins[ROWS]                    = {12, 11, 10, 9}; 
byte colPins[COLS]                    = {8, 7, 6, 5}; 
Keypad customKeypad                   = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS); 

LiquidCrystal_I2C                       lcd(0x27, 16, 2);

byte            data_count            = 10;
int             counter_relay         = 0;
int             counter_plastik       = 0;
int             target                = 0;
int             number                = 0;
int             memory;
char            customKey;
bool            switchState           = false;
char            keyLock               = NO_KEY;

void setup(){
  Serial.begin(9600);
  lcd.init();   
  lcd.backlight(); 
  lcd.setCursor(0,0);
  String data  = String ("Target  = ");
  lcd.print(data + target);
  lcd.setCursor(0, 1);
  String data2 = String ("Plastik = ");
  lcd.print(data2 + counter_plastik);
  lcd.setCursor(10,0);
  pinMode(buttonStart, INPUT_PULLUP);
  pinMode(relay1, OUTPUT);
  pinMode(relay2, OUTPUT);
  pinMode(relay3, OUTPUT);
  digitalWrite(relay1, LOW);
  digitalWrite(relay2, LOW);
  digitalWrite(relay3, LOW);
  
}
  
void loop(){
  time_now = millis();
  time_now1 = millis();

  ////////////////MENGHITUNG JUMLAH PLASTIK TERCETAK///////////
  if (time_now-time_before>time_sensor){
      time_before=time_now;

  char key = customKeypad.getKey();
  if (key) {
    processInput(key);
  }

  int buttonStart_State = digitalRead(buttonStart);
  if (buttonStart_State == LOW){
    switchState = true;
  } else {
    switchState = false;
  }

  if (switchState){
    counter_relay++;
    if(counter_plastik==number){
    counter_relay=0;
    for (int i=10;i<=15;i++){
      lcd.setCursor(i,1);
      lcd.print(' ');
    }
    } else {
    counter_relay++;

    }
  }else{
    for (int ii=11;ii<=15;ii++){
      lcd.setCursor(ii,1);
      lcd.print(' ');
      if (ii == 15){
        break;
      }
    }
    counter_relay=0;
  }
  lcd.setCursor(data_count,1);
  lcd.print(counter_plastik);
  Serial.println(counter_relay);
  }
  ////////////////MENGHITUNG JUMLAH PLASTIK TERCETAK///////////


  ////////////////MENGATUR RELAY PENGGERAK PNEUMATIK///////////
  if (time_now1-time_before1>time_relay){
      time_before1=time_now1;
    if ( counter_relay >= 1 && counter_relay <= 20 ){
      digitalWrite(relay1, HIGH);
    }else{
      digitalWrite(relay1, LOW);
    }

    if ( counter_relay >= 20 && counter_relay <= 40){
      digitalWrite(relay2, HIGH);
    }else{
      digitalWrite(relay2, LOW);
    }

     if (counter_relay >= 40 && counter_relay <= 60){
      digitalWrite(relay3, HIGH);
    }else{
      digitalWrite(relay3, LOW);
    }
    
    }

    if (counter_relay == 60){
    counter_relay = 0;
    counter_plastik++;
    Serial.print(" > ");
    Serial.println(counter_plastik);
    }
    ////////////////MENGATUR RELAY PENGGERAK PNEUMATIK///////////
    
} 

void processInput(char key){
  
  if (key != NO_KEY){
    if (key >= '0' && key <= '9'){
      if (keyLock == NO_KEY) {
        number = (number * 10) + (key - '0');
      }
    }else if (key == 'A'){
      keyLock = key;
    }else if (key == 'B'){
      for(int i = 10; i <= 15; i++){
        lcd.setCursor(i,0);
        lcd.print(' ');
        lcd.setCursor(i,1);
        lcd.print(' ');
        if(i == 16){
          break;
        }
      }
      number = 0;
      counter_plastik = 0;
      keyLock = NO_KEY;
    }
  }

  lcd.setCursor(data_count,0);
  lcd.print(number);
  // Serial.println("Inputan monitor :" + number);
  // Serial.println("Tombol :" + key);
}