#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 20, 4);

unsigned char StatePB1, StatePB2,StatePB3;
#define pinPB1  14
#define pinPB2  12
#define pinPB3  13
#define LedMerah  23
#define LedKuning  19
#define LedHijau   18
unsigned char Counter;
unsigned char PLAN   = 100;
unsigned char ACTUAL = 0;   // DARU SENSOR = TOMBOL PB1
unsigned char DIFF;     // plan - actual
unsigned char hasil = PLAN;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(LedMerah, OUTPUT);
  pinMode(LedKuning, OUTPUT);
  pinMode(LedHijau, OUTPUT);
  digitalWrite(LedMerah, HIGH);
  digitalWrite(LedKuning, HIGH);
  digitalWrite(LedHijau, HIGH);
  pinMode(pinPB1, INPUT_PULLUP);
  pinMode(pinPB2, INPUT_PULLUP);
  pinMode(pinPB3, INPUT_PULLUP);
  LCD.init();
  LCD.backlight();
  LCD.setCursor(0, 0);       // x , y
  LCD.print("PLAN: ");
  LCD.print(PLAN);
  LCD.setCursor(0, 1);
  LCD.print("ACTUAL: ");
  LCD.setCursor(0, 2);
  LCD.print("DIFF: ");
  LCD.setCursor(0, 3);
  LCD.print("DONE!");

}

void loop() {
  // put your main code here, to run repeatedly:
  StatePB1 = digitalRead(pinPB1);
  StatePB2 = digitalRead(pinPB2);
  StatePB3 = digitalRead(pinPB3);
  if (StatePB1 == LOW)
  {
    digitalWrite(LedMerah, LOW);   // led on
    Counter++;
    LCD.setCursor(8,1);
    LCD.print(Counter);
    digitalWrite(LedMerah, LOW);   // led on
    LCD.setCursor(7,2);
    hasil--;
    LCD.print(hasil);
  }
  else {
    digitalWrite(LedMerah, HIGH);
  }
  //==============================================
  if (StatePB2 == LOW)
  {
    digitalWrite(LedKuning, LOW);
  }
  else {
    digitalWrite(LedKuning, HIGH);
  }
}