NeoPixel 驱动

sunlichao

1. from machine import Pin
   
2. from neopixel import NeoPixel
   
3. pin = Pin(0, Pin.OUT)   # set GPIO0 to output to drive NeoPixels
   
4. np = NeoPixel(pin, 8)   # create NeoPixel driver on GPIO0 for 8 pixels
   
5. np[0] = (255, 255, 255) # set the first pixel to white
   
6. np.write()              # write data to all pixels
   
7. r, g, b = np[0]         # get first pixel colour

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