from HCSR04 import *
from time import sleep
from machine import Pin, PWM, SoftI2C
from i2c_lcd import LiquidCrystalI2C

device = HCSR04(26, 27)

red = Pin(25, Pin.OUT)

beeper = PWM(Pin(33), freq=200, duty=50)

i2c = SoftI2C(sda=Pin(23), scl=Pin(22))
lcd = LiquidCrystalI2C(i2c, 0x27, 16, 2)
lcd.set_controlled_cursor(False)
lcd.home()
lcd.display()
lcd.backlight()
lcm = 0
while True:
    cm = int(device.distance_cm())
    if cm != lcm:
        lcd.clear()
        lcd.set_cursor(2, 1)
        lcd.print(f"Distance:  {cm}cm")
    if cm <= 10:
        beeper = PWM(Pin(33), freq=200, duty=50)
        red.value(1)
        beeper.freq(200)
    else:
        beeper.deinit()
        red.value(0)
    lcm = cm
    # print(cm)
    sleep(0.1)