Adolfo Reyna
44 lines
1.4 KiB
Python
44 lines
1.4 KiB
Python
"""CircuitPython NeoPixel LED utility.
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Uses the neopixel library and time.monotonic() to run breathing and rainbow animations.
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"""
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import math
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import time
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import neopixel
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class BoardLED:
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def __init__(self, pin):
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# Initialize 1 NeoPixel on the specified pin
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self.np = neopixel.NeoPixel(pin, 1, brightness=1.0, auto_write=False)
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self.base_color = (0, 0, 0)
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self.off()
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def set_color(self, r, g, b):
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self.base_color = (r, g, b)
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self.np[0] = (r, g, b)
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self.np.show()
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def off(self):
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self.set_color(0, 0, 0)
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def update_breathing(self, speed_factor=1.0):
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if self.base_color == (0, 0, 0):
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return
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t = time.monotonic() * speed_factor
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# Sine wave from 0.05 to 1.0
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factor = 0.525 + 0.475 * math.sin(t * math.pi)
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br = int(self.base_color[0] * factor)
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bg = int(self.base_color[1] * factor)
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bb = int(self.base_color[2] * factor)
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self.np[0] = (br, bg, bb)
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self.np.show()
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def update_rainbow(self, speed_factor=0.2):
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t = time.monotonic() * speed_factor
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r = int(127.5 * (1.0 + math.sin(t * 2.0 * math.pi)))
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g = int(127.5 * (1.0 + math.sin(t * 2.0 * math.pi + 2.0 * math.pi / 3.0)))
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b = int(127.5 * (1.0 + math.sin(t * 2.0 * math.pi + 4.0 * math.pi / 3.0)))
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self.np[0] = (r, g, b)
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self.np.show()
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