import time
time.sleep(0.1)

from machine import Pin

#declare led pins
pins = [15,14,13,12,11,10,9,8]
leds = []

#initialize leds
for i in pins:
  leds.append(Pin(i, Pin.OUT))

#Pattern 1 nia Sir
def pattern1():
  for led in leds:
    led.value(1)
    time.sleep(0.5)
    led.value(0)
    time.sleep(0.5)
  
  for i in range(7,-1,-1):
    leds[i].value(1)
    time.sleep(0.5)
    leds[i].value(0)
    time.sleep(0.5)

#Pattern 2 nia Sir
def pattern2():
  for i in range(2):
    leds[i].value(1)
    leds[i+2].value(1)
    leds[i+4].value(1)
    leds[i+6].value(1)
    time.sleep(0.5)
    leds[i].value(0)
    leds[i+2].value(0)
    leds[i+4].value(0)
    leds[i+6].value(0)
    time.sleep(0.5)

  for i in range(2):
    leds[i].value(1)
    leds[i+2].value(1)
    leds[i+4].value(1)
    leds[i+6].value(1)
    time.sleep(0.5)
    leds[i].value(0)
    leds[i+2].value(0)
    leds[i+4].value(0)
    leds[i+6].value(0)
    time.sleep(0.5)

#Pattern 3 nia Sir
def pattern3():
  for i in range(3):
    leds[i].value(1)
    leds[7-i].value(1)
    time.sleep(0.5)
    leds[i].value(0)
    leds[7-i].value(0)
    time.sleep(0.5)
 
  leds[0].value(1)
  leds[7].value(1)
  time.sleep(0.5)
  leds[0].value(0)
  leds[7].value(0)
  time.sleep(0.5)
  
  leds[3].value(1)
  leds[4].value(1)
  time.sleep(0.5)
  leds[3].value(0)
  leds[4].value(0)
  time.sleep(0.5)
  
#main Loop
while True:
  pattern1()
  time.sleep(1)
  pattern2()
  time.sleep(1)
  pattern3()
  time.sleep(1)