from machine import Pin
from time import sleep_ms

led_pins = [0,1,2,3,4,5,6,7]
leds = [Pin(pin, Pin.OUT) for pin in led_pins]

stop_button = Pin(20, Pin.IN, Pin.PULL_UP)

current_led = 0
delay = 50

# Inline clear LEDs code (no def)
leds[0].value(0)
leds[1].value(0)
leds[2].value(0)
leds[3].value(0)
leds[4].value(0)
leds[5].value(0)
leds[6].value(0)
leds[7].value(0)

spinning = True
while spinning:
    # Clear LEDs
    leds[0].value(0)
    leds[1].value(0)
    leds[2].value(0)
    leds[3].value(0)
    leds[4].value(0)
    leds[5].value(0)
    leds[6].value(0)
    leds[7].value(0)

    # Light current LED
    if current_led == 0:
        leds[0].value(1)
    if current_led == 1:
        leds[1].value(1)
    if current_led == 2:
        leds[2].value(1)
    if current_led == 3:
        leds[3].value(1)
    if current_led == 4:
        leds[4].value(1)
    if current_led == 5:
        leds[5].value(1)
    if current_led == 6:
        leds[6].value(1)
    if current_led == 7:
        leds[7].value(1)

    sleep_ms(delay)

    current_led = current_led + 1
    if current_led > 7:
        current_led = 0

    if not stop_button.value():  # pressed (active low)
        spinning = False

# Slow down and stop
steps = 0
while steps < 20:
    # Clear LEDs
    leds[0].value(0)
    leds[1].value(0)
    leds[2].value(0)
    leds[3].value(0)
    leds[4].value(0)
    leds[5].value(0)
    leds[6].value(0)
    leds[7].value(0)

    # Light current LED
    if current_led == 0:
        leds[0].value(1)
    if current_led == 1:
        leds[1].value(1)
    if current_led == 2:
        leds[2].value(1)
    if current_led == 3:
        leds[3].value(1)
    if current_led == 4:
        leds[4].value(1)
    if current_led == 5:
        leds[5].value(1)
    if current_led == 6:
        leds[6].value(1)
    if current_led == 7:
        leds[7].value(1)

    sleep_ms(delay)
    current_led = current_led + 1
    if current_led > 7:
        current_led = 0

    delay = delay + 20
    steps = steps + 1

# Final stop - keep the last LED lit
leds[0].value(0)
leds[1].value(0)
leds[2].value(0)
leds[3].value(0)
leds[4].value(0)
leds[5].value(0)
leds[6].value(0)
leds[7].value(0)

if current_led == 0:
    leds[0].value(1)
if current_led == 1:
    leds[1].value(1)
if current_led == 2:
    leds[2].value(1)
if current_led == 3:
    leds[3].value(1)
if current_led == 4:
    leds[4].value(1)
if current_led == 5:
    leds[5].value(1)
if current_led == 6:
    leds[6].value(1)
if current_led == 7:
    leds[7].value(1)