from machine import Pin
from neopixel import NeoPixel
from time import *

print('hello ESP32!')

D0 = 2
D1 = 3
led_pin = Pin(D1) #, Pin.OUT)

# create NeoPixel driver on GPIO0 for 16 pixels:
np = NeoPixel(led_pin, 16)   

print('set the first pixel to red..')
np[0] = (255, 0, 0) 
print('set the second pixel to yellow..')
np[1] = (255, 255, 0) 

# write data to all pixels:
np.write()    
sleep_ms(1000)

# simulator BUG? 
# doesn't go beyond this point..

print('change to green..')

np[0] = (0, 255, 0)
np.write()  

sleep_ms(1000)

#for i in range(3):
# while True:
#   duty_cycle_str = input('pwm duty (0 - 1023): ')
#   led_pwm.duty(int(duty_cycle_str))
#   sleep_ms(100)