from machine import Pin, ADC
import utime
import onewire, ds18x20
import math


DIR_PIN = 16
STEP_PIN = 17
rows = [Pin(i, Pin.OUT) for i in range(4)]  
cols = [Pin(i, Pin.IN, Pin.PULL_DOWN) for i in range(4, 8)]  
dir_pin = Pin(DIR_PIN, Pin.OUT)  
step_pin = Pin(STEP_PIN, Pin.OUT) 
step_pin.value(0)
led_R = Pin(28, Pin.OUT)  
led_G = Pin(27, Pin.OUT)  
led_B = Pin(22, Pin.OUT)  
adc = ADC(Pin(26))  
passwordE = "ABCD"
BETA = 3950 
dat = Pin(8)
ds_sensor = ds18x20.DS18X20(onewire.OneWire(dat))

# Keypad layout
keys = [['1', '2', '3', 'A'],
        ['4', '5', '6', 'B'],
        ['7', '8', '9', 'C'],
        ['*', '0', '#', 'D']]



def scan_keypad():
    for row in range(4):
        rows[row].high()
        for col in range(4):
            if cols[col].value() == 1:
                utime.sleep_ms(20)  
                if cols[col].value() == 1:
                    while cols[col].value() == 1:
                        utime.sleep_ms(10)  
                    rows[row].low()
                    return keys[row][col]
        rows[row].low()
    return None


def read_temperature():
    analog_value = adc.read_u16()
    voltage_ratio = analog_value / 65535.0

    # Bağlantıya göre uygun formül seçilmeli!
    try:
        resistance_ratio = 1 / voltage_ratio - 1  # Termistör GND tarafında ise
        celsius = 1 / (math.log(resistance_ratio) / BETA + 1.0 / 298.15) - 273.15
        return round(celsius, 2)
    except (ZeroDivisionError, ValueError):
        print("Hata: Sıcaklık hesaplanamadı! ADC:", analog_value)
        return None


def read_password():
    password = ""
    while len(password) < 4:
        key = None
        while key is None:
            key = scan_keypad()
        print("Key Pressed:", key)
        password += key
    return password


def open_door(password, passwordE):
    raw = adc.read_u16()  # 0-65535 arasında analog değer
    voltage = raw * 3.3 / 65535
    if password == passwordE and voltage>0.65:
        print("Şifre doğru, kapı açılıyor!")
        led_B.value(1)
        led_R.value(1)
        utime.sleep(1)
        led_B.value(0)
        led_R.value(0)
        
        dir_pin.value(1)  
        for _ in range(50):
            step_pin.value(1)
            step_pin.value(0)
            utime.sleep_ms(5)
        utime.sleep(5)
        dir_pin.value(0)  
        for _ in range(50):
            step_pin.value(1)
            step_pin.value(0)
            utime.sleep_ms(5)

        while True:
            raw = adc.read_u16()  # 0-65535 arasında analog değer
            voltage = raw * 3.3 / 65535  # Gerilime çevir (3.3V referans)
            
            print("Ham Değer:", raw, "Gerilim:", voltage)
            utime.sleep(1)
        
    else:
        print("Şifre yanlış!")
        led_G.value(1)
        led_B.value(1)  
        utime.sleep(1)
        led_G.value(0)
        led_B.value(0)  
        while True:
            raw = adc.read_u16()  # 0-65535 arasında analog değer
            voltage = raw * 3.3 / 65535  # Gerilime çevir (3.3V referans)
            
            print("Ham Değer:", raw, "Gerilim:", voltage)
            utime.sleep(1)


print("4 karakterli şifreyi girin:")
password = read_password()
print("Girilen Şifre:", password)
open_door(password, passwordE)