import time
time.sleep(0.1) # Wait for USB to become ready

print("Hello, Pi Pico!")


from machine import Pin,PWM

ROW_PINS = [0, 1, 2, 3]  
COL_PINS = [16,17,18,19]  

row_pins = [Pin(pin, Pin.OUT) for pin in ROW_PINS]
col_pins = [Pin(pin, Pin.IN, Pin.PULL_UP) for pin in COL_PINS]
led = [Pin(28,Pin.OUT),Pin(27,Pin.OUT),Pin(22,Pin.OUT),Pin(21,Pin.OUT),Pin(14,Pin.OUT)]


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

numbers=['1' , '2' , '3' , '4' , '5']


def scan_keypad():
    key_pressed = None
    for i, row in enumerate(row_pins):
        row.value(0)
        for j, col in enumerate(col_pins):
            if not col.value():
                key_pressed = keypad[i][j]
                while not col.value():
                    pass
        row.value(1)
    return key_pressed

entered_password = ""
while True:
    key = scan_keypad()
    if key is not None:
        print("Key pressed:", key)
        if key == '#':
            print(entered_password)
            for i in range(5):
                if(entered_password == numbers[i]):
                    led[i].on()
                    time.sleep(2)
                    led[i].off()
            entered_password=""
        else:
            entered_password += key
    time.sleep(0.1)