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neopixel.py

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  • neopixel.py 840 B
    # 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)
    
        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 fill(self, color):
            r, g, b = color
            for i in range(len(self.buf) / 3):
                self.buf[i * 3] = g
                self.buf[i * 3 + 1] = r
                self.buf[i * 3 + 2] = b
    
        def write(self):
            neopixel_write(self.pin, self.buf, True)