from machine import Pin, PWM
import time

# Pin tanımları
dout = Pin(14, Pin.IN)   # HX711 DT
sck = Pin(15, Pin.OUT)   # HX711 SCK
dht_pin = Pin(27, Pin.IN)  # DHT22 DATA pin
servo = PWM(Pin(26))     # Servo motor
servo.freq(50)           # 50Hz PWM frekansı

# DHT22 manuel okuma fonksiyonu
def read_dht22():
    try:
        # DHT22 başlatma sinyali
        dht_pin.init(Pin.OUT)
        dht_pin.value(0)
        time.sleep_ms(20)
        dht_pin.value(1)
        time.sleep_us(30)
        dht_pin.init(Pin.IN)
        
        # Başlangıç sinyalini bekle
        timeout = 0
        while dht_pin.value() == 0:
            timeout += 1
            if timeout > 1000:
                return None
        
        while dht_pin.value() == 1:
            timeout += 1
            if timeout > 2000:
                return None
        
        # 40 bit veri oku
        data = []
        for i in range(40):
            while dht_pin.value() == 0:
                pass
            start_time = time.ticks_us()
            while dht_pin.value() == 1:
                pass
            duration = time.ticks_diff(time.ticks_us(), start_time)
            data.append(1 if duration > 40 else 0)
        
        # Veriyi byte'lara çevir
        humidity = 0
        temperature = 0
        for i in range(16):
            humidity = (humidity << 1) + data[i]
            temperature = (temperature << 1) + data[i + 16]
        
        return temperature / 10.0
    except:
        return None

def read_weight():
    sck.value(0)
    while dout.value() == 1:
        pass
    
    count = 0
    for i in range(24):
        sck.value(1)
        count = count << 1
        sck.value(0)
        if dout.value():
            count += 1
    
    sck.value(1)
    sck.value(0)
    
    if count & 0x800000:
        count = count - 0x1000000
    
    return count / 420

def move_servo(angle):
    # Açıyı PWM duty cycle'a çevir
    duty = int(1000 + (angle / 180) * 8000)
    servo.duty_u16(duty)

# Ana döngü
while True:
    weight = read_weight()
    temp = read_dht22()
    
    print(f"Ağırlık: {weight:.2f} kg")
    if temp:
        print(f"Sıcaklık: {temp:.1f}°C")
    else:
        print("Sıcaklık: Hata")
    
    # Servo kontrolü
    if weight > 5.0:
        move_servo(90)
        print("Servo: 90° (Ağır)")
    elif temp and temp > 30:
        move_servo(45)
        print("Servo: 45° (Sıcak)")
    else:
        move_servo(0)
        print("Servo: 0° (Normal)")
    
    print("-" * 20)
    time.sleep(3)