from machine import Pin, ADC, PWM, I2C
import network, time, urequests
import utime
from ssd1306 import SSD1306_I2C

alto= 64
ancho= 128

sensorMQ135 = ADC(Pin(32))

i2c=I2C(0, scl=Pin(22), sda=Pin(21))
oled = SSD1306_I2C(ancho, alto, i2c)
sensorMQ135.width(ADC.WIDTH_10BIT)
sensorMQ135.atten(ADC.ATTN_11DB)

while True: 
  lecturaMQ135 = int(sensorMQ135.read())
  utime.sleep(0.5)

  ppm = 1200 / 1023
  co = ppm * lecturaMQ135
  print ("Monoxido de carbono: ",co, "ppm")
  utime.sleep_ms(1000)

  if co <= 350:
    print ("Alta calidad de aire")
  elif 350 < co <= 800:
    print ("Moderada calidad de aire")
  elif 800 < co <= 1200:
    print ("Baja calidad de aire")
  else:
    print ("Mala calidad de aire")
  
  oled.fill(0)
  oled.pixel(64, 60, 1)
  oled.vline(0, 0, 20, 1)
  oled.vline(120, 0, 20, 1)
  oled.hline(0, 0, 120, 1)
  oled.hline(0, 21, 120, 1)
  oled.text("Dista y PPM", 10, 10, 1)
  #oled.text("ppm", 0, 30, 1) #no usar
  oled.text("ppm", 0, 40, 1) #esta lines la comente ya que no se si ponerla
  ##oled.text(str(co), 60, 30, 1)
  #oled.text("cm", 100, 30, 1)
  oled.text(str(co), 60, 40, 1) #aqui puedo colocar las lecturas del mq135
  #oled.text("%", 100, 40, 1)
  oled.show()