import machine
import time
import dht
from machine import Pin, I2C
from hcsr04 import HCSR04
from i2c_lcd import I2cLcd

dht_pin = Pin(15)
dht_sensor = dht.DHT22(dht_pin)
ultrasonic_sensor = HCSR04(trigger_pin=18, echo_pin=19)
i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=400000)
lcd_address = 0x27  
lcd = I2cLcd(i2c, lcd_address, 2, 16)  
def get_distance():
    distance = ultrasonic_sensor.distance_cm()
    return distance
def get_temperature_humidity():
    try:
        dht_sensor.measure()
        temp = dht_sensor.temperature()
        humidity = dht_sensor.humidity()
        return temp, humidity
    except OSError as e:
        return None, None
while True:
    lcd.clear()
    temp, humidity = get_temperature_humidity()
    distance = get_distance()
    if temp is not None and humidity is not None:
        lcd.move_to(0, 0)
        lcd.putstr("T:{:.1f}C H:{:.1f}%".format(temp, humidity))
    else:
        lcd.move_to(0, 0)
        lcd.putstr("DHT22 Error")
    lcd.move_to(0, 1)
    lcd.putstr("Dist:{:.2f}cm".format(distance))
    time.sleep(2)