from machine import Pin, Timer
import network
import urequests # for http  API
import time
#from umqtt.robust import MQTTClient # for MQTT Broker
import sys
#import dht
from dht import DHT22

dht22 = DHT22(Pin(12))

# Function to read DHT
def readDht():
    dht22.measure()
    return dht22.temperature(), dht22.humidity()
    # test DHT function
print (readDht())

# Split Sensor reading..
#temp, hum = readDht()

# Connect with WiFi
WIFI_SSID = "Wokwi-GUEST"
WIFI_PASSWORD = ""

# Function to connect to local WiFi

def connect_wifi():
    wifi = network.WLAN(network.STA_IF)
    wifi.active(True)
    wifi.disconnect()
    wifi.connect(WIFI_SSID,WIFI_PASSWORD)
    if not wifi.isconnected():
        print('connecting..')
        timeout = 0
        while (not wifi.isconnected() and timeout < 10):
            print(10 - timeout)
            timeout = timeout + 1
            time.sleep(1) 
    if(wifi.isconnected()):
        print('connected')
    else:
        print('not connected')
        sys.exit()
    print('network config:', wifi.ifconfig())
        
connect_wifi() # Connecting to WiFi Router 

# Thingspeak HTTP API Protocol (Connection)

HTTP_HEADERS = {'Content-Type': 'application/json'} 
THINGSPEAK_WRITE_API_KEY = '2UQKAKSXHRO1A7YR' # Write API of the Channel Achinta Malik

while True:
      
    #pin = Pin(12, Pin.OUT, Pin.PULL_DOWN) #Rpi
    dht22 = DHT22(Pin(12)) #DHT22 object created at Pin 12
    dht22.measure()
    print("Temperature: {}".format(dht22.temperature()))
    print("Humidity: {}".format(dht22.humidity()))
    
    temp  = dht22.temperature() # store dht22 temperature into temp variable
    hum = dht22.humidity()

    dht_readings = {'field1':temp, 'field2':temp} 
    request = urequests.post( 'http://api.thingspeak.com/update?api_key=' + THINGSPEAK_WRITE_API_KEY, json = dht_readings, headers = HTTP_HEADERS )  
    request.close() 
    print(dht_readings) 
    print(" Msg sent to Thingspeak channel successfully...")
    print(" ********************************************")
    time.sleep(5)