import machine
import time
from utime import sleep
from machine import Pin

s0 = machine.Pin(27, machine.Pin.OUT)
s1 = machine.Pin(28, machine.Pin.OUT)
mux_in = machine.Pin(26, machine.Pin.IN, machine.Pin.PULL_DOWN)

led_count = 9
led_start = 7
led_list = [Pin(led_start + i, Pin.OUT) for i in range(led_count)]

Pbutton_count = 3
Pbutton_start = 16
Pbutton_list = [Pin(Pbutton_start + i, Pin.IN, Pin.PULL_DOWN) for i in range(Pbutton_count)]

Pushed_Buttons = []
start_time = 0
correct_pass = [Pbutton_list[0], Pbutton_list[2], Pbutton_list[1]]
prev_binary_code = -1  # لتخزين آخر قيمة مطبوعة وتحديثها فقط عند التغيير

def read_binary_code():
    binary_code = 0
    for selector_val in range(4):
        s0.value(selector_val % 2)
        s1.value(selector_val // 2)
        sleep(0.020)
        binary_code += (pow(2, selector_val) * mux_in.value())
    return binary_code

def interrupt(Pin):
    global start_time
    current_time = time.ticks_ms()
    diff = current_time - start_time
    if diff > 200:
        button_index = Pbutton_list.index(Pin)
        print(f'Button {button_index} pressed')
        Pushed_Buttons.append(Pin)
        start_time = current_time
        check_passcode()

for pButton in Pbutton_list:
    pButton.irq(trigger=Pin.IRQ_FALLING, handler=interrupt)

prev_binary_code = read_binary_code()
print(f'Initial Decimal representation: {prev_binary_code}')

def check_passcode():
    global prev_binary_code
    binary_code = read_binary_code()
    if binary_code != prev_binary_code:
        print(f'Decimal representation: {binary_code}')
        prev_binary_code = binary_code
    
    if len(Pushed_Buttons) >= len(correct_pass):
        if Pushed_Buttons[:len(correct_pass)] == correct_pass:
            print("Correct passcode")
            if 0 <= binary_code < led_count:
                led_list[binary_code].toggle()
                print(f'Toggling LED at position {binary_code}')
            else:
                print(f'Selected output {binary_code} is out of range. Valid range: 0-{led_count - 1}')
        else:
            print("Incorrect passcode. Try again.")
        Pushed_Buttons.clear()

while True:
    binary_code = read_binary_code()
    if binary_code != prev_binary_code:
        print(f'Decimal representation: {binary_code}')
        prev_binary_code = binary_code
    sleep(0.1)