import machine
import utime
from ssd1306 import SSD1306_I2C
import framebuf, sys
import time
import dht

pix_res_x = 128
pix_res_y = 64
pot=machine.ADC(machine.Pin(28))
DHT=dht.DHT22(machine.Pin(4))
i2c_dev = machine.I2C(0, scl=machine.Pin(21), sda=machine.Pin(20), freq=200000)
oled = SSD1306_I2C(pix_res_x, pix_res_y, i2c_dev)
ldr=machine.ADC(1)

def dht_out():
    DHT.measure()
    temperature = DHT.temperature()
    humidity = DHT.humidity()
    return temperature, humidity

def read_ldr():
    ldr_value = ldr.read_u16()
    return ldr_value

def display_ldr(ldr_value):
    #oled.fill(0)
    oled.text("light intensity:",5,5)
    oled.text(str(ldr_value)+"lux",5,20)
    oled.show()
    return 0

def display_temp(temp):
    #oled.fill(0)
    oled.text("temparature:",5,35)
    oled.text(str(temp)+"C",5,50)
    oled.show()
    return 0

def display_humid(humid):
    #oled.fill(0)
    oled.text("humidity:",5,5)
    oled.text(str(humid)+"%",5,20)
    oled.show()
    return 0

def display_pot(pot):
    #oled.fill(0)
    oled.text("moisture:",5,5)
    pot_val = (pot.read_u16()/65536)*100
    oled.text(str("{:1.2f}".format(pot_val)+"%"),5,20)
    oled.show()
    return 0

def main():
    oled.fill(0)
    #display_pot(pot)
    temp,humid=dht_out()
    ldr_value=read_ldr()
    #display_ldr(ldr_value)
    #display_temp(temp)
    #display_humid(humid)
    if machine.Pin(10,machine.Pin.IN).value():
        display_humid()
        time.sleep(5)
    main()

if __name__ == '__main__':
    main()