33 lines
859 B
Python
33 lines
859 B
Python
# NeoPixel driver for MicroPython on ESP32
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# MIT license; Copyright (c) 2016 Damien P. George
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from esp import neopixel_write
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class NeoPixel:
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ORDER = (1, 0, 2, 3)
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def __init__(self, pin, n, bpp=3, timing=1):
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self.pin = pin
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self.n = n
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self.bpp = bpp
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self.buf = bytearray(n * bpp)
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self.pin.init(pin.OUT)
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self.timing = timing
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def __setitem__(self, index, val):
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offset = index * self.bpp
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for i in range(self.bpp):
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self.buf[offset + self.ORDER[i]] = val[i]
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def __getitem__(self, index):
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offset = index * self.bpp
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return tuple(self.buf[offset + self.ORDER[i]] for i in range(self.bpp))
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def fill(self, color):
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for i in range(self.n):
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self[i] = color
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def write(self):
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neopixel_write(self.pin, self.buf, self.timing)
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