from machine import Pin, PWM
import dht
from utime import sleep

sensor = dht.DHT22(14)

red_led = Pin(4, Pin.OUT) # high temp
blue_led = Pin(0, Pin.OUT) # low humidity
green_led = Pin(2, Pin.OUT) # normal


buzzer = PWM(Pin(33))
buzzer.freq(1000)   # 1kHz tone


temp_threshold= 50
hmd_threshold = 40


while True:

    # Sensor reading

    sensor.measure()

    temp = sensor.temperature()
    hmd = sensor.humidity()

    print("temperature: ", temp, "degrees C | humidity: ", hmd, "%")

    # reset (all off)

    red_led.off()
    green_led.off()
    blue_led.off()
    buzzer.duty(0)

    # Conditions

    if temp > temp_threshold:
        red_led.value(1)
        buzzer.duty(512)
        print("Warning: High Temperature")
        sleep(0.2)
        # red_led.value(0)
        buzzer.duty(0)
        sleep(0.2)

    elif hmd < hmd_threshold:
        blue_led.value(1)
        buzzer.duty(512)
        print("Warning: Low Humidity")
        sleep(0.2)
        # blue_led_led.value(0)
        buzzer.duty(0)
        sleep(0.2)

    else:
        green_led.value(1)

    sleep(1)