# Exercise 11(b)

from machine import Pin, ADC
from neopixel import NeoPixel
from time import sleep

# Initialize 16-pixel ring on GPIO pin 12
ring = NeoPixel(Pin(12), 16)

pot1 = ADC(Pin(36)) # pin 36 will be used as an ADC input line
pot2 = ADC(Pin(39)) # pin 39 will be used as an ADC input line
pot3 = ADC(Pin(34)) # pin 34 will be used as an ADC input line

switch = Pin(19,Pin.IN,Pin.PULL_UP)

while True:
    pot1_value = int(pot1.read()/16)
    print(pot1_value)
    pot2_value = int(pot2.read()/16)
    print(pot2_value)
    pot3_value = int(pot3.read()/16)
    print(pot3_value)

    direction = switch.value()
    if direction==0:
        for w in range (16):

            ring[w] = (pot1_value, pot2_value, pot3_value) # Set pixel 0 to red
        
            # Update all pixels simultaneously
            ring.write()
            sleep(.125)
    else:
        for w in range (15,-1,-1):

            ring[w] = (pot1_value, pot2_value, pot3_value) # Set pixel 0 to red
        
            # Update all pixels simultaneously
            ring.write()
            sleep(.125)