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

#define MEMORY_SIZE 64  

const int buttonPin1 = 2; 
const int buttonPin2 = 3; 
const int ledPin1 = 4;  
const int ledPin2 = 5;   

LiquidCrystal_I2C lcd(0x27, 16, 2); 

void setup() {
  Serial.begin(9600);
  
  pinMode(buttonPin1, INPUT_PULLUP);
  pinMode(buttonPin2, INPUT_PULLUP); 
  pinMode(ledPin1, OUTPUT);         
  pinMode(ledPin2, OUTPUT);         

  lcd.backlight();
  lcd.begin(16, 2);
  lcd.print("Emulator PZU");
  delay(2000);
  lcd.clear();
}

void loop() {
  bool button1State = digitalRead(buttonPin1) == LOW; 
  bool button2State = digitalRead(buttonPin2) == LOW; 

  if (button1State) {
    for (int i = 0; i < MEMORY_SIZE; i++) {
      EEPROM.write(i, i); 
    }
    
    digitalWrite(ledPin1, HIGH);
    lcd.clear();
    lcd.print("Writing to PZU...");
    delay(1000);
    digitalWrite(ledPin1, LOW);
  }

  if (button2State) {
    lcd.clear();
    lcd.print("Reading PZU...");
    delay(500);  

    for (int i = 0; i < MEMORY_SIZE; i++) {
      byte value = EEPROM.read(i);
      lcd.setCursor(0, 1);
      lcd.print("Addr ");
      lcd.print(i);
      lcd.print(": ");
      lcd.print(value);
      delay(100);  
    }

    digitalWrite(ledPin2, HIGH);
    delay(1000);
    digitalWrite(ledPin2, LOW);
  }

  delay(10); 
}