import utime
from machine import I2C, Pin

from liquid_crystal import LiquidCrystal
from liquid_crystal_i2c import LiquidCrystal_I2C


def main() -> None:
    i2c: I2C = I2C(0, scl=Pin(1), sda=Pin(0), freq=100000)
    gpio_list: tuple = (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)  # 8bit mode
    # gpio_list: tuple = (2, 3, 4, 9, 10, 11, 12) # 4bit mode
    
    print(f"GPIO display running: {len(gpio_list[3:])}bit mode")
    print(f"I2C display running: 4bit mode")

    # Initialize LCD with default parameters (2 rows, 16 columns, 5x8 font)
    lcd1 = LiquidCrystal_I2C(i2c)
    lcd2 = LiquidCrystal(gpio_list)

    lcd1.backlight(True)  # Backlight on
    lcd1.clear_display()  # Clear the display
    lcd1.set_cursor(0, 0)  # Set the cursor to print
    lcd1.print("Hello, World!")

    lcd2.backlight(Pin(13, Pin.OUT), True)
    lcd2.clear_display()
    lcd2.set_cursor(0, 0)  # Set the cursor to print
    lcd2.print("Hello, World!")

    while True:
        for i in range(100):
            lcd1.set_cursor(1, 0)  # allocate space for print variable
            lcd1.print("       ")  # Fill some space for avoid display clear
            lcd1.set_cursor(1, 0)
            lcd1.print(i)  # Print the variable

            lcd2.set_cursor(1, 0)  
            lcd2.print("       ")  
            lcd2.set_cursor(1, 0)
            lcd2.print(i)  # Print the variable
            utime.sleep_ms(60)


if __name__ == "__main__":
    main()