from machine import Pin
from LCD_I2C import LCD
import time

# Inicializace LCD (I2C adresa 0x27, velikost 20x4)
lcd = LCD(sda=8, scl=9, i2c_addr=0x27, num_lines=4, num_columns=20)

# Tlačítka (zapojená "active low")
btn1 = Pin(1, Pin.IN, Pin.PULL_UP)
btn2 = Pin(6, Pin.IN, Pin.PULL_UP)
btn3 = Pin(4, Pin.IN, Pin.PULL_UP)

def read_buttons():
    return not btn1.value(), not btn2.value(), not btn3.value()

def update_display(b1, b2, b3):
    lcd.clear()
    lcd.set_cursor(0, 0)
    lcd.print("Tlacitka:")
    lcd.set_cursor(0, 1)
    lcd.print(f"T1: {'ON ' if b1 else 'OFF'}")
    lcd.set_cursor(0, 2)
    lcd.print(f"T2: {'ON ' if b2 else 'OFF'}")
    lcd.set_cursor(0, 3)
    lcd.print(f"T3: {'ON ' if b3 else 'OFF'}")

while True:
    b1, b2, b3 = read_buttons()
    update_display(b1, b2, b3)
    time.sleep(0.2)