# Library
from machine import Pin
from time import * 
import dht
import time
import urequests as rq
import network

# define pin mode
red = Pin(18, Pin.OUT)
yellow = Pin(5, Pin.OUT)
green = Pin(4, Pin.OUT)

# Setup DHT 22
dht22 = dht.DHT22(Pin(15))

print("Connecting to WiFi", end="")
sta_if = network.WLAN(network.STA_IF)
sta_if.active(True)
sta_if.connect('Wokwi-GUEST', '')
while not sta_if.isconnected():
  print(".", end="")
  time.sleep(0.1)
print(" Connected!")


# Update do am -> thu nghiem

# rs = rq.get("https://api.thingspeak.com/update?api_key=2CRAWAQEKNXGO6FR&field2=50")

temp = -1
humi = -1

# loop
while True:
    
    dht22.measure()
    cr_temp = dht22.temperature() # eg. 23.6 (°C)
    cr_humi = dht22.humidity()   # eg. 41.3 (% RH)
    if (cr_temp != temp):
        temp = cr_temp
        rq.get("https://api.thingspeak.com/update?api_key=2CRAWAQEKNXGO6FR&field1={}".format(temp))
    if (cr_humi != humi):
        humi = cr_humi
        rq.get("https://api.thingspeak.com/update?api_key=2CRAWAQEKNXGO6FR&field2={}".format(humi))
    sleep(30)