#modules to import

from machine import Pin, ADC, SoftI2C
from ssd1306 import SSD1306_I2C
from time import sleep

#ESP32 Pin assignment
i2c= SoftI2C(scl=Pin(22),sda=Pin(21))

#Configuración dislay oled

oled_width= 128
oled_height = 64
oled = SSD1306_I2C(oled_width, oled_height,i2c)

#Crear los pines para el led y el sensor
led_red = Pin(2, Pin.OUT)
led_green = Pin(4, Pin.OUT)
sensor = ADC(Pin(32))

#Resolucion y voltaje a trabajar
sensor.width(ADC.WIDTH_10BIT)
sensor.atten(ADC.ATTN_11DB)

while True:
    oled.fill(0)
    sensorVal = sensor.read()
    #print(sensorVal)
    if sensorVal>200:
        led_red.value(1)
        oled.text('Alert CO High!', 0, 20)
        led_green.value(0)
    else:
        led_green.value(1)
        oled.text("CO normal", 0, 20)
        led_red.value(0)
    oled.show()
    sleep(2)