from machine import Pin, PWM
import utime
import ssd1306
from machine import I2C
import dht

i2c = I2C(0, scl=Pin(21), sda=Pin(20))   #inisiasi pin OLED
oled = ssd1306.SSD1306_I2C(128, 64, i2c, 0x3c)

back_button=Pin(0, Pin.IN, Pin.PULL_DOWN)   #inisiasi pin back button
enter_button=Pin(1, Pin.IN, Pin.PULL_DOWN)  #inisiasi pin enter button
next_button=Pin(2, Pin.IN, Pin.PULL_DOWN)   #inisiasi pin next button

led=Pin(5, Pin.OUT) #inisiasi pin led

pindht=Pin(27, Pin.IN)  #inisiasi pin dht
d=dht.DHT22(pindht)

kipas =Pin(19, Pin.OUT)
pwm = PWM(kipas)
#deklarasi variabel
count=1
l=0
pwm.freq(1000)

def suhu():
    global count
    print("Temperatur ", t, "C")    #menampilkan temperatur pada serial monitor
    oled.fill(0)
    oled.text("Temperatur",25,0)
    oled.text(str(t),45,10)
    oled.text("C",78,10)
    oled.text("<<Lamp",0,48)
    oled.text("Hum>>",90,48)
    oled.show()
    if back_button.value():
        count=count+2
    elif next_button.value():
        count=count+1

def kelembaban():
    global count
    print("Humidity ", h, "%")    #menampilkan humidity pada serial monitor
    oled.fill(0)
    oled.text("Humidity",35,0)
    oled.text(str(h),45,10)
    oled.text("%",78,10)
    oled.text("<<Temp",0,48)
    oled.text("Lamp>>",80,48)
    oled.show()
    if back_button.value():
        count=count-1
    elif next_button.value():
        count=count+1

def lampu():
    global count
    global l
    if l == 0:
        k="OFF"
    elif l==1:
        k="ON"
    print("Lamp ",k)    #menampilkan kondisi lampu pada serial monitor
    oled.fill(0)
    oled.text("Lamp",48,0)
    oled.text(str(k),52,10)
    oled.text("<<Hum",0,48)
    oled.text("Temp>>",80,48)
    oled.show()
    if back_button.value():
        count=count-1
    elif next_button.value():
        count=count-2
    elif enter_button.value():
        led.toggle()
        l=not l
    
while True:
    d.measure()   #pengukuran suhu dan kelembaban
    t=d.temperature()    #pembacaan suhu
    h=d.humidity()       #pembacaan kelembaban

    if count == 1:
        suhu()
    elif count == 2:
        kelembaban()
    elif count== 3:
        lampu()
    

    if t >= 25 and t <= 30:
        duty = 200
        pwm.duty_u16(duty * duty)
    if t < 25 :
        suhu()
        duty = 50
        pwm.duty_u16(duty * duty)
    elif t>30:
        suhu()
        duty = 255
        pwm.duty_u16(duty * duty)
    elif h >= 50 and h <= 70:
        duty = 200
        pwm.duty_u16(duty * duty)
    elif h < 50 :
        kelembaban()
        duty = 50
        pwm.duty_u16(duty * duty)
    elif h > 70 :
        kelembaban()
        duty = 255
        pwm.duty_u16(duty * duty)

    if led.value():
        l=1