led_strip.py
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#!/usr/bin/python3
# -*- coding: utf-8 -*-
"""
config and init 24-LEDs-stripe
"""
from neopixel import *
# import logger
from rpi_ws281x import Adafruit_NeoPixel, Color,PixelStrip
LED_COUNT = 750 # 要控制LED的数量.
# LED_PIN = 18 # GPIO接口 (PWM编码).
LED_BRIGHTNESS = 100 # 设置LED亮度 (0-255)
#以下LED配置无需修改
LED_FREQ_HZ = 800000 # LED信号频率（以赫兹为单位）（通常为800khz）
LED_DMA = 10 # 用于生成信号的DMA通道（尝试5）
LED_INVERT = False # 反转信号（使用NPN晶体管电平移位时）
LED_CHANNEL = 0
stop_flag = None
def get_strip(pin=12):
LED_PIN = pin
strip = PixelStrip(LED_COUNT, LED_PIN, LED_FREQ_HZ, LED_DMA, LED_INVERT, LED_BRIGHTNESS,LED_CHANNEL)
# Initialize the library (must be called once before other functions).
# log.debug("Initialize: " + str(strip))
strip.begin()
return strip
def color_wipe_full(strip, color, wait_ms=50):
"""Wipe color across display a pixel at a time."""
for i in range(strip.numPixels()):
strip.setPixelColor(i, color)
strip.show()
# time.sleep(wait_ms/1000.0)
def reset_strip(strip):
strip.setBrightness(LED_BRIGHTNESS)
color_wipe_full(strip, Color(0,0,0), 20)
# log.debug('LED stripe cleared.')
return
# noinspection PyProtectedMember
def _cleanup_strip(strip: Adafruit_NeoPixel):
strip._cleanup()