from machine import Pin
import time

led1 = Pin(15, Pin.OUT)
led2 = Pin(2, Pin.OUT)
led3 = Pin(17, Pin.OUT)
led4 = Pin(5, Pin.OUT)
button1 = Pin(13, Pin.IN, Pin.PULL_UP)
button2 = Pin(14, Pin.IN, Pin.PULL_UP)

trang_thai_led12 = False
trang_thai_led34 = False
ttnutnhan1_cuoi = 1
ttnutnhan2_cuoi = 1

while True:

    ttnutnhan1_hientai = button1.value()

    if ttnutnhan1_cuoi == 1 and ttnutnhan1_hientai == 0:
        trang_thai_led12 = not trang_thai_led12
        led1.value(trang_thai_led12)
        led2.value(trang_thai_led12)
        time.sleep(0.2)  # chống dội phím

    ttnutnhan1_cuoi = ttnutnhan1_hientai
    time.sleep(0.02)
    
    ttnutnhan2_hientai = button2.value()

    if ttnutnhan2_cuoi == 1 and ttnutnhan2_hientai == 0:
        trang_thai_led34 = not trang_thai_led34
        led3.value(trang_thai_led34)
        led4.value(trang_thai_led34)
        time.sleep(0.2)  # chống dội phím

    ttnutnhan2_cuoi = ttnutnhan2_hientai
    time.sleep(0.02)