from machine import Pin
import time

led_pins = [Pin(i, Pin.OUT) for i in range(0, 9)]

upper_triangle = [led_pins[i] for i in [0, 1, 2, 3, 4]]
lower_triangle = [led_pins[i] for i in [4, 5, 6, 7, 8]]

button1 = Pin(10, Pin.IN, Pin.PULL_UP)
button2 = Pin(11, Pin.IN, Pin.PULL_UP)
button3 = Pin(12, Pin.IN, Pin.PULL_UP)

blink_mode = False
last_button3_state = 1

def toggle(led_group):
    for led in led_group:
        led.value(not led.value())

while True:
    if button1.value() == 0:
        toggle(upper_triangle)
        time.sleep(0.3)

    if button2.value() == 0:
        toggle(lower_triangle)
        time.sleep(0.3)

    current_button3_state = button3.value()
    if last_button3_state == 1 and current_button3_state == 0:
        blink_mode = not blink_mode
    last_button3_state = current_button3_state

    if blink_mode:
        for led in upper_triangle:
            led.on()
        for led in lower_triangle:
            led.off()
        time.sleep(0.5)
        for led in upper_triangle:
            led.off()
        for led in lower_triangle:
            led.on()
        time.sleep(0.5)
    else:
        time.sleep(0.1)