from machine import Pin, PWM, SoftI2C
import oledlib
import servolib
import dht
from utime import sleep

oled_pin = SoftI2C(scl=Pin(22), sda=Pin(21))
servo_pin = Pin(2)  
led1_pin = 4
led2_pin = 5
led3_pin = 18
sensor = dht.DHT22(Pin(13))
servo = servolib.Servo(pin=servo_pin)  
button_0 = Pin(26, Pin.IN, Pin.PULL_UP)  
button_1 = Pin(27, Pin.IN, Pin.PULL_UP)  
button_2 = Pin(14, Pin.IN, Pin.PULL_UP)  
button_3 = Pin(12, Pin.IN, Pin.PULL_UP)  


sensor = dht.DHT22(Pin(13))
servo = servolib.Servo(pin=servo_pin)
led1 = Pin(led1_pin, Pin.OUT)
led2 = Pin(led2_pin, Pin.OUT)
led3 = Pin(led3_pin, Pin.OUT)
oled = oledlib.SSD1306_I2C(width=128, height=64, i2c=oled_pin, external_vcc=False)


servo_running = False
speed_factor = 1  


def Servo(angle, speed_factor):
   
    duty_cycle = int(((angle) / 180 * 2 + 0.5) / 20 * 1023 * speed_factor)
    
    servo.duty(duty_cycle)


def button_callback(pin):
    global servo_running, speed_factor
    if pin == button_0:  
        servo_running = False
        servo.duty = 0  
        speed_factor = 1  
    elif pin == button_1:  
        speed_factor = 0.5
        servo_running = True
    elif pin == button_2:  
        speed_factor = 1
        servo_running = True
    elif pin == button_3:  
        speed_factor = 2
        servo_running = True


button_0.irq(trigger=Pin.IRQ_FALLING, handler=button_callback)
button_1.irq(trigger=Pin.IRQ_FALLING, handler=button_callback)
button_2.irq(trigger=Pin.IRQ_FALLING, handler=button_callback)
button_3.irq(trigger=Pin.IRQ_FALLING, handler=button_callback)

while True:
   
    sensor.measure()
    t = sensor.temperature()
    h = sensor.humidity()

    
    if h < 50 and t < 20: 
        led1.on()  
        led2.off()  
        servo.duty = 0  
        servo_running = False  
    elif h > 50 and t > 20:  
        led1.off()  
        led2.on()  
        if not servo_running:  
            servo_running = True
            speed_factor = 1  
            servo.duty = 0  
    else:
        led1.off()  
        led2.off()  

    
    if servo_running and not led1.value():
       
        for angle in range(0, 181):  
            servo.move(angle, speed_factor)
            sleep(0.01)
        for angle in range(180, -1, -1): 
            servo.move(angle, speed_factor)
            sleep(0.01)

        
        oled.fill(0)  
        oled.text("Fan is running", 13, 20, 1)  
        oled.text("Speed: ", 13, 40, 1)  
        if speed_factor == 0.5:
            oled.text("20%", 70, 30, 1)
        elif speed_factor == 1:
            oled.text("50%", 70, 30, 1)
        elif speed_factor == 2:
            oled.text("80%", 70, 30, 1)
        oled.show()

 
    sensor.measure()
    t = sensor.temperature()
    h = sensor.humidity()
    print("Temperature:", t)
    print("Humidity:", h)


    oled.fill(0)

 
    if led1.value() == 1:
        oled.text("OFF", 40, 30)
    elif led2.value() == 1:
        oled.text("ON", 30, 30)

 
    oled.text("Temp: {:.2f} C".format(t),5, 20, 1)
    oled.text("Humidity: {:.2f}%".format(h),5, 40, 1)
    oled.show()


    if h < 50 and t < 40:
        led1.on()
    else:
        led1.off()

    if h > 50 and t > 40:
        led2.on()
    else:
        led2.off()