import network
import time
import ujson
from umqtt.simple import MQTTClient
import machine
import dht
from machine import Pin, SoftI2C
from lcd_api import LcdApi
from i2c_lcd import I2cLcd
from time import sleep

I2C_ADDR = 0x27
totalRows = 2
totalColummns = 16

i2c = SoftI2C(scl=Pin(22), sda=Pin(21), freq=10000)

lcd = I2cLcd(i2c, I2C_ADDR, totalRows, totalColummns)

sensor = dht.DHT22(Pin(2))

led_red=Pin(23,Pin.OUT)   
led_blue=Pin(19,Pin.OUT)   

firsttemp = 0
firsthumidity = 0
while True:
  try:
    sleep(2)
    sensor.measure()
    temp = sensor.temperature()
    hum = sensor.humidity()
    if temp > 10 and temp < 30:
      led_red.value(1)
    else:
      led_red.value(0)
    if hum > 20 and hum < 60:
      led_blue.value(1)
    else:
      led_blue.value(0)
    if temp!=firsttemp or hum!=firsthumidity:
      lcd.clear()
      lcd.putstr("Temp: %3.1f C\n" %temp)
      lcd.putstr("Hum: %3.1f %%" %hum)
      firsttemp=temp
      firsthumidity=hum
  except OSError as e:
    print('lectura fallida del sensor')