#
# Original: https://wokwi.com/projects/393849360067450881
#

import machine
import time
from utime import sleep

LED_COUNT = 9
LED_GPIO_START = 7

def Chaser(pins):
  delay = 0.2
  for pin in pins:
    pin.toggle()
    time.sleep(delay)
    pin.toggle()

  for pin in reversed(pins[0:len(pins) - 1]):
    pin.toggle()
    time.sleep(delay)
    pin.toggle()

def ToggleBits(pins, code):
  pinId = 0
  while code > 0:
    if code & 1:
      pins[pinId].toggle()
    code = code >> 1
    pinId = pinId + 1

time.sleep(0.1) # Wait for USB to become ready

print("Hello, Pi Pico!")

outputPins = []
for outputId in range(0, LED_COUNT):
  pin = machine.Pin(LED_GPIO_START + outputId, machine.Pin.OUT)
  outputPins.append(machine.Pin(LED_GPIO_START + outputId, machine.Pin.OUT))

Chaser(outputPins)

binaryCode = 12
if binaryCode == 0:
  for pin in outputPins:
    pin.off()
else:
  ToggleBits(outputPins, binaryCode)

# for outputId in range(0, LED_COUNT):
#   outputPins[outputId].toggle()
#   time.sleep(0.2)
#   outputPins[outputId].toggle()

# for outputId in range(LED_COUNT - 2, -1, -1):
#   outputPins[outputId].toggle()
#   time.sleep(0.2)
#   outputPins[outputId].toggle()