【得捷电子Follow me第2期】任务3：按键控制ws2812B

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【得捷电子Follow me第2期】任务3：按键控制ws2812B [复制链接]

 

学习下使用按键控制板载Neopixel LED的显示和颜色切换

 

1、复制文件到开发板盘符下的lib文件夹下

 

 

2、测试代码

copy.py

import time
import board
import neopixel
import digitalio
from adafruit_display_text import bitmap_label
import terminalio
from adafruit_bitmap_font import bitmap_font

font = bitmap_font.load_font("fonts\wenquanyi_10pt.pcf")
color = 0x00FF00

text2 = "W2812B 关闭 "
scale = 2

text_area2 = bitmap_label.Label(font, text=text2, scale=scale)
text_area2.x = 10
text_area2.y = 30
text_area2.color = color
board.DISPLAY.show(text_area2)

pixel = neopixel.NeoPixel(board.NEOPIXEL, 1)
pixel.brightness = 0.5
white = (255, 255, 255)
red = (255, 0, 0)
green = (0, 255, 0)
blue= (0, 0, 255)
black = (0, 0, 0)

button = digitalio.DigitalInOut(board.BUTTON)
button.switch_to_input(pull=digitalio.Pull.UP)

pixel.fill(black)

but=0;
while True:
    if not button.value:
        but=but+1
        while (not button.value):
            pass
    
    if but==0:
        pixel.fill(black)
        
        text2 = "W2812B 关闭 "
        text_area2 = bitmap_label.Label(font, ext=text2, scale=scale )
        text_area2.x = 10
        text_area2.y = 30
        text_area2.color = 0x000000
        board.DISPLAY.show(text_area2)
    elif but==1:
        pixel.fill(red)
        
        text2 = "W2812B 红色 "
        text_area2 = bitmap_label.Label(font, text=text2, scale=scale)
        text_area2.x = 10
        text_area2.y = 30
        text_area2.color = 0xff0000
        board.DISPLAY.show(text_area2)
        
    elif but==2:
        pixel.fill(green)
        
        text2 = "W2812B 绿色 "
        text_area2 = bitmap_label.Label(font, text=text2, scale=scale)
        text_area2.x = 10
        text_area2.y = 30
        text_area2.color = 0x00ff00
        board.DISPLAY.show(text_area2)
    elif but==3:
        pixel.fill(blue)
        
        text2 = "W2812B 蓝色 "
        text_area2 = bitmap_label.Label(font, text=text2, scale=scale)
        text_area2.x = 10
        text_area2.y = 30
        text_area2.color = 0x0000ff
        board.DISPLAY.show(text_area2)
    elif but==4:
        pixel.fill(white)
        
        text2 = "W2812B 白色 "
        text_area2 = bitmap_label.Label(font, text=text2, scale=scale)
        text_area2.x = 10
        text_area2.y = 30
        text_area2.color = 0xffffff
        board.DISPLAY.show(text_area2)
    
    #a=a+1
    if but>4:
        but=0
    time.sleep(0.1)

 

3、运行效果

通过按键切换WS2812B显示的颜色，同时在LCD上显示相应状态颜色的汉字

w2812b