Adolfo Reyna
62 lines
2.0 KiB
Python
62 lines
2.0 KiB
Python
import math
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import time
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from machine import Pin
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import neopixel
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class BoardLED:
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"""Utility class to control the onboard WS2812 (NeoPixel) RGB LED on GPIO 38."""
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def __init__(self, pin_num=38):
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self.np = neopixel.NeoPixel(Pin(pin_num), 1)
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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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"""Sets the RGB LED to a specific static color.
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Values are between 0 and 255.
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"""
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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.write()
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def off(self):
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"""Turns the RGB LED off."""
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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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"""Performs one step of a non-blocking breathing animation.
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Call this regularly in the main application loop.
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Args:
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speed_factor (float): Speeds up or slows down the breathing rate.
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"""
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if self.base_color == (0, 0, 0):
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return
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t = time.ticks_ms() / 1000.0 * speed_factor
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# Sine wave from 0.05 to 1.0 for breathing intensity
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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.write()
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def update_rainbow(self, speed_factor=0.2):
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"""Performs one step of a non-blocking rainbow color cycle.
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Call this regularly in the main application loop.
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"""
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t = time.ticks_ms() / 1000.0 * speed_factor
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# Use phase offsets of 120 degrees (2pi/3) for red, green, blue
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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.write()
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