import machine
import dht
import time
sensor = None

last_temp_value=0
wait_time = 2
delta=10

def setup():
    global sensor
    # Set up the DHT sensor
    dht_pin = machine.Pin(15) 
    sensor = dht.DHT22(dht_pin)  
    

def get_temperature():
    sensor.measure()  
    temperature = sensor.temperature()  
    return temperature   

def get_humidity():
    sensor.measure()  
    humidity = sensor.humidity()  
    return humidity  

def get_delta(last_value, current_value):
    current_Delta=0
    if(last_temp_value!=0):
        current_Delta = (abs(temperature - last_temp_value) / last_temp_value) * 100
    else:
        current_Delta=delta
    return abs(current_Delta)



setup()

while True:
    try:
        temperature = get_temperature()
        humidity= get_humidity()
        if get_delta(last_temp_value, temperature) >= delta:
            print("Significant temperature change detected:", temperature)
            print("Humidity:", humidity)
            last_temp_value = temperature  # Update the last temperature
    except Exception as error:
        print("Failed to read the sensor", error)

    time.sleep(2)