import time
import board
import busio
import microcontroller
import lcd
import i2c_pcf8574_interface

# I2C setup for Raspberry Pi Pico
i2c = busio.I2C(scl=board.GP1, sda=board.GP0)
i2c = i2c_pcf8574_interface.I2CPCF8574Interface(i2c, 0x27)

#LCD setup
display = lcd.LCD(i2c, num_rows=2, num_cols=16)
display.set_backlight(True)
display.set_display_enabled(True)

# Line 1 static
display.set_cursor_pos(0, 0)
display.print("Pico ON !!!")

prev_sec = -1

while True:
    now = int(time.monotonic())

    if now != prev_sec:
        prev_sec = now

        minutes = now // 60
        seconds = now % 60

        display.set_cursor_pos(1, 0)

        if now % 2 == 0:
            display.print("Timer: {:02d}:{:02d}".format(minutes,seconds))
        else:
            display.print("                ")


    time.sleep(0.05)