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# APA102 driver for MicroPython on ESP8266
# MIT license; Copyright (c) 2016 Robert Foss, Daniel Busch
from esp import apa102_write
class APA102:
def __init__(self, clock_pin, data_pin, n):
self.clock_pin = clock_pin
self.data_pin = data_pin
self.n = n
self.buf = bytearray(n * 4)
self.clock_pin.init(clock_pin.OUT)
self.data_pin.init(data_pin.OUT)
def __setitem__(self, index, val):
r, g, b, brightness = val
self.buf[index * 4] = r
self.buf[index * 4 + 1] = g
self.buf[index * 4 + 2] = b
self.buf[index * 4 + 3] = brightness
def __getitem__(self, index):
i = index * 4
return self.buf[i], self.buf[i + 1], self.buf[i + 2], self.buf[i + 3]
def write(self):
apa102_write(self.clock_pin, self.data_pin, self.buf)
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