from machine import Pin, SoftI2C , ADC
import time
import dht
sensor=dht.DHT22(Pin(16))
sys=Pin(17 , Pin.IN , Pin.PULL_UP)
light_sensor=ADC(12)
from ssd1306 import SSD1306_I2C
i2c=SoftI2C(scl=Pin(22),sda=Pin(21),freq=400000)
width , height = 128 , 64 
y=0
oled = SSD1306_I2C (width , height , i2c)
oled.invert(True)
while 1:
  reading = sys.value()
  while reading==1:
    reading = sys.value()
    print(reading)
    sensor.measure()
    tmp=sensor.temperature()
    hum=sensor.humidity()
    light=65535-light_sensor.read_u16()
    light=int(light*(100/65535))
    #print(light)
    oled.text(f'tmp:{tmp}C',10,10)
    oled.text(f'hum:{hum}%',10,20)
    oled.text(f'light{light}%',10,30)
    oled.show()
    time.sleep_ms(1)
    oled.fill(0)
    if light<30 :
      oled.invert(True)
    else:
      oled.invert(False)