from machine import Pin
from utime import sleep

# Define a list of GPIO pins to which LEDs are connected
led_pins = [15, 2, 4, 5, 18, 19, 21, 22]

# Create a list of LED objects as Pin instances, set as outputs
leds = [Pin(pin, Pin.OUT) for pin in led_pins]

# A simple function to turn all LEDs off
def turn_off_all_leds():
    for led in leds:
        led.value(0)

# A function to cycle through LEDs in a binary counting pattern
def cycle_leds_binary():
    for i in range(256):  # Assuming you want to go through 256 steps
        for j in range(len(leds)):
            # Calculate the bit value, but traverse the LEDs in reverse
            bit_value = (i >> (len(leds) - 1 - j)) & 1
            leds[j].value(bit_value)
        sleep(0.5)
    print("FInished counting!")

# Ensure all LEDs are initially off
turn_off_all_leds()

# Now cycle through LEDs in a binary counting pattern
cycle_leds_binary()