#_______________________________________________________
#__________________importar librerias___________________
from machine import Pin
from utime import sleep, sleep_ms
from dht import DHT11, DHT22
from hcsr04 import HCSR04
import network, time
import ujson
from neopixel import NeoPixel
from umqtt.simple import MQTTClient
#__________________________________________________________
#_____________crear cliente para protocolo MQTT____________
MQTT_CLIENT_ID = "clie175565" 
MQTT_BROKER    = "broker.hivemq.com"
MQTT_USER      = "" #solo de ser necesario
MQTT_PASSWORD  = "" #solo de ser necesario
MQTT_TOPIC     = "Prueba/monitoreo/ESP32/"
#__________________________________________________________
#__________________crear los objetos_______________________
sen_temp = DHT22(Pin(12)) #sensor de temperatura y humedad DHT22
sen_dis = HCSR04(trigger_pin=15, echo_pin=4) #sensor de proximidad HC-SR04
np = NeoPixel(Pin(16), 1) #Neopixel (led)
#__________________________________________________________

np[0]=(255,0,0)
np.write()

def conectaWifi (red, password):
      global miRed
      miRed = network.WLAN(network.STA_IF)     
      if not miRed.isconnected():              #Si no está conectado…
          miRed.active(True)                   #activa la interface
          miRed.connect(red, password)         #Intenta conectar con la red
          print('Conectando a la red', red +"…")
          timeout = time.time ()
          while not miRed.isconnected():           #Mientras no se conecte..
              if (time.ticks_diff (time.time (), timeout) > 10):
                  return False
      return True
np[0]=(18,250,3)
np.write()

if conectaWifi ("Wokwi-GUEST", ""):

    print ("Conexión exitosa!")
    print('Datos de la red (IP/netmask/gw/DNS):', miRed.ifconfig())

    np[0]=(0,0,250)
    np.write()

    print("Conectando a  MQTT server... ",MQTT_BROKER,"...", end="") 
    client = MQTTClient(MQTT_CLIENT_ID, MQTT_BROKER, user=MQTT_USER, password=MQTT_PASSWORD) 
    client.connect()
     

    while True:
        sen_temp.measure()
        tem = sen_temp.temperature()
        hum = sen_temp.humidity()
        dis = sen_dis.distance_cm()/100
        print("T: {:.1f} °C, H: {:.1f}% D:{:.2f}mt".format(tem, hum, dis))
        
        message = ujson.dumps({
            "Humedad":hum,
            "Temperatura":tem,
            "Distancia":dis,
            })

        print("Reportando a  MQTT topic {}: {}".format(MQTT_TOPIC, message)) 
        client.publish(MQTT_TOPIC, message)


        print(message)
        sleep_ms(2000)
else:
     print ("Imposible conectar")
     miRed.active (False)