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# NeoPixel driver for MicroPython on ESP8266
# MIT license; Copyright (c) 2016 Damien P. George
from esp import neopixel_write
class NeoPixel:
def __init__(self, pin, n):
self.pin = pin
self.n = n
self.buf = bytearray(n * 3)
self.pin.init(pin.OUT, pin.PULL_NONE)
def __setitem__(self, index, val):
r, g, b = val
self.buf[index * 3] = g
self.buf[index * 3 + 1] = r
self.buf[index * 3 + 2] = b
def __getitem__(self, index):
i = index * 3
return self.buf[i + 1], self.buf[i], self.buf[i + 2]
def write(self):
neopixel_write(self.pin, self.buf, True)
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