# Project objectives:
#   Read temperature and humidity values from the DHT22 sensor
#   Display the sensor readings in the console
#   Turn on an LED if temperature > 25°C

# Hardware connections:
# DHT22 Vcc Pin to 3.3V
# DHT22 SDA Pin to GPIO 14
# 1k ohm pull-up resistor between Vcc and SDA
# DHT22 GND Pin to GND
# LED connected to GPIO 0

# modules
from machine import Pin
from time import sleep
from dht import DHT22  # lowercase 'from'

# creating a DHT22 object
dht = DHT22(Pin(14))
led = Pin(0, Pin.OUT)

# continuously get the sensor data
while True:
    # getting sensor readings
    dht.measure()
    temp = dht.temperature()  # fixed method call
    hum = dht.humidity()

    # display the values of T and H to the console
    print(f"Temperature: {temp}°C   Humidity: {hum}%")

    # turn on the LED if temperature > 25°C
    if temp > 25:
        led.on()
    else:
        led.off()

    # read the values from sensor every 2 secs
    sleep(2)