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

LiquidCrystal_I2C lcd(0x27, 16, 2);

// 5 xil darajadagi tayoqchalar (custom character)
byte bars[6][8] = {
  {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, // 0% (bo‘sh)
  {0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10}, // 20%
  {0x18,0x18,0x18,0x18,0x18,0x18,0x18,0x18}, // 40%
  {0x1C,0x1C,0x1C,0x1C,0x1C,0x1C,0x1C,0x1C}, // 60%
  {0x1E,0x1E,0x1E,0x1E,0x1E,0x1E,0x1E,0x1E}, // 80%
  {0x1F,0x1F,0x1F,0x1F,0x1F,0x1F,0x1F,0x1F}  // 100%
};

int potPin = A0;

void setup() {
  lcd.init();
  lcd.backlight();

  // Har bir tayoqchani xotiraga yozish
  for (int i = 0; i < 6; i++) {
    lcd.createChar(i, bars[i]);
  }
}

void loop() {
  int val = analogRead(potPin);
  int percent = map(val, 0, 1023, 0, 100);

  lcd.setCursor(0, 0);
  lcd.print("Ovoz: ");
  lcd.print(percent);
  lcd.print("%   "); // Bo‘sh joy qoldirish uchun

  lcd.setCursor(0, 1);
  int fullBars = percent / 10;   // 10% ga bitta katak
  int remainder = percent % 10;  // 0-9 oraliqda qolgan qism

  // To‘la tayoqchalarni chiqarish
  for (int i = 0; i < fullBars; i++) {
    lcd.write(byte(5)); // 100% tayoqcha
  }

  // Qisman to‘lgan tayoqcha
  if (fullBars < 16) {
    int barLevel = remainder / 2;  // 0-5 oralig‘ida
    lcd.write(byte(barLevel));
    fullBars++;
  }

  // Qolganini bo‘sh kataklar bilan to‘ldirish
  for (int i = fullBars; i < 16; i++) {
    lcd.write(byte(0)); // Bo‘sh tayoqcha
  }

  delay(200);
}