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

LiquidCrystal_I2C lcd(0x27,20,4); 
struct varEEPROM { 
  uint8_t SET = 15;  
}; varEEPROM EE;
typedef String str;
int SET;
const int bok  = 15;
const int bmen = 2;
const int bup  = 17;
const int brg  = 18;
const int bdw  = 5;
const int blf  = 16;
bool setmode = 0, changeValue = 0;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  lcd.init();  
  lcd.backlight();
  pinMode(bok, INPUT_PULLUP);
  pinMode(bmen, INPUT_PULLUP);
  pinMode(bup, INPUT_PULLUP);
  pinMode(brg, INPUT_PULLUP);
  pinMode(bdw, INPUT_PULLUP);
  pinMode(blf, INPUT_PULLUP);
cursor(1,1); print("      WELCOME");
cursor(1,2); print("PT.UNIPACK PLASINDO");
delay(2000);
lcd.clear();
}

void loop() {
  // put your main code here, to run repeatedly:
cursor(0,0); print("Suhu = ");print("15 ");print("C");cursor(12,0); print("Set=");print(EE.SET);print(" C");
cursor(0,1); print("Gas  = ");print("80 ");print("C");cursor(12,1); print("COM = ");print("ON");

cursor(0,3); print("[SETPOIN]");print("     [MENU]");
 //lcd.clear();
if (digitalRead(bok)==LOW ){
  delay(100);
  while (digitalRead(bok)==LOW) {}
  setmode = 1;
} else if (digitalRead(bmen)==LOW ){
  delay(100);
  while (digitalRead(bmen)==LOW) {}
  setmode = 0;
}
if(setmode){
  lcd.clear();
  cursor(1,1);print("SETPOIN = ");print(EE.SET);

  if(digitalRead(bup) == LOW){
    changeValue = 1;
    EE.SET ++ ;
  }
    if(digitalRead(bdw) == LOW){
    changeValue = 1;
    EE.SET -- ;
  }
}
if (changeValue == 1){
  changeValue = 0;
  EEPROM.put(0,EE);
  delay(2);
}
}
void cursor(int x, int y){
  lcd.setCursor(x, y);
}

void print(String str){
  lcd.print(str);
}
void print(int data){
  lcd.print(data);
}