ESP32（MicroPython） RGB流水灯 新版
本程序相比上一个程序，改用了24灯的环形WS2812模块，数据引脚改用13脚。增加了把相应颜色重复2次（即前半部分和后半部分的灯颜色排列相同）和4次的模式，模式增加到9种。
代码如下
#导入Pin模块
from machine import Pin
import time
from machine import PWM
from neopixel import NeoPixel
# 五向导航按键，COM引脚接3.3V
key1 = Pin(21, Pin.IN, Pin.PULL_DOWN)
key2 = Pin(19, Pin.IN, Pin.PULL_DOWN)
key3 = Pin(18, Pin.IN, Pin.PULL_DOWN)
key4 = Pin(5, Pin.IN, Pin.PULL_DOWN)
key5 = Pin(17, Pin.IN, Pin.PULL_DOWN)
key6 = Pin(16, Pin.IN, Pin.PULL_DOWN)
pin=13
rgb_num=24
rgb_led=NeoPixel(Pin(pin,Pin.OUT),rgb_num)
key_en=1
#按键扫描函数
def key_scan():
global key_en
if key_en==1 and (key1.value()==1 or key2.value()==1 or key3.value()==1 or key4.value()==1 or
key5.value()==1 or key6.value()==1 ):
time.sleep_ms(10)
key_en=0
if key1.value()==1:
return 1
elif key2.value()==1:
return 2
elif key3.value()==1:
return 3
elif key4.value()==1:
return 4
elif key5.value()==1:
return 5
elif key6.value()==1:
return 6
elif (key1.value()==0 and key2.value()==0 and key3.value()==0 and key4.value()==0 and
key5.value()==0 and key6.value()==0 ) :
key_en=1
return 0
brightness=51
delay=40
mode=8
def key_get(): #获取键值并改变变量的值
global brightness
global delay
global mode
key=key_scan()
if key==1 and brightness<255 :
brightness+=17
elif key==2 and brightness>17 :
brightness-=17
elif key==3 and delay<90 :
delay+=10
elif key==4 and delay>10 :
delay-=10
elif key==5 and mode<9 :
mode+=1
elif key==6 and mode>0 :
mode-=1
count=0
#程序入口
while True:
key_get()
if count==23 :
count=0
if mode==0 : #关灯
for i in range(rgb_num):
rgb_led[i]=(0, 0, 0)
rgb_led.write()
if mode==1 : #三原色
temp=0
i=count
count+=1
while temp<8 :
if i>23 :
i-=24
rgb_led[i]=(brightness, 0, 0)
i+=1
temp+=1
temp=0
while temp<8 :
if i>23 :
i-=24
rgb_led[i]=(0, brightness, 0)
i+=1
temp+=1
temp=0
while temp<8 :
if i>23 :
i-=24
rgb_led[i]=(0, 0, brightness)
i+=1
temp+=1
rgb_led.write()
time.sleep_ms(delay)
if mode==2 : #三原色重复2次
temp=0
i=count
count+=1
repeat=0
while repeat<4 :
temp=0
repeat+=1
while temp<4 :
if i>23 :
i-=24
rgb_led[i]=(brightness, 0, 0)
i+=1
temp+=1
temp=0
while temp<4 :
if i>23 :
i-=24
rgb_led[i]=(0, brightness, 0)
i+=1
temp+=1
temp=0
while temp<4 :
if i>23 :
i-=24
rgb_led[i]=(0, 0, brightness)
i+=1
temp+=1
rgb_led.write()
time.sleep_ms(delay)
if mode==3 : #三原色重复4次
temp=0
i=count
count+=1
repeat=0
while repeat<4 :
temp=0
repeat+=1
while temp<2 :
if i>23 :
i-=24
rgb_led[i]=(brightness, 0, 0)
i+=1
temp+=1
temp=0
while temp<2 :
if i>23 :
i-=24
rgb_led[i]=(0, brightness, 0)
i+=1
temp+=1
temp=0
while temp<2 :
if i>23 :
i-=24
rgb_led[i]=(0, 0, brightness)
i+=1
temp+=1
rgb_led.write()
time.sleep_ms(delay)
if mode==4 : #三间色
temp=0
i=count
count+=1
while temp<8 :
if i>23 :
i-=24
rgb_led[i]=(brightness, brightness, 0)
i+=1
temp+=1
temp=0
while temp<8 :
if i>23 :
i-=24
rgb_led[i]=(0, brightness, brightness)
i+=1
temp+=1
temp=0
while temp<8 :
if i>23 :
i-=24
rgb_led[i]=(brightness, 0, brightness)
i+=1
temp+=1
rgb_led.write()
time.sleep_ms(delay)
if mode==5 : #三间色重复2次
temp=0
i=count
count+=1
repeat=0
while repeat<2 :
temp=0
repeat+=1
while temp<4 :
if i>23 :
i-=24
rgb_led[i]=(brightness, brightness, 0)
i+=1
temp+=1
temp=0
while temp<4 :
if i>23 :
i-=24
rgb_led[i]=(0, brightness, brightness)
i+=1
temp+=1
temp=0
while temp<4 :
if i>23 :
i-=24
rgb_led[i]=(brightness, 0, brightness)
i+=1
temp+=1
rgb_led.write()
time.sleep_ms(delay)
if mode==6 : #三间色重复4次
temp=0
i=count
count+=1
repeat=0
while repeat<4 :
temp=0
repeat+=1
while temp<2 :
if i>23 :
i-=24
rgb_led[i]=(brightness, brightness, 0)
i+=1
temp+=1
temp=0
while temp<2 :
if i>23 :
i-=24
rgb_led[i]=(0, brightness, brightness)
i+=1
temp+=1
temp=0
while temp<2 :
if i>23 :
i-=24
rgb_led[i]=(brightness, 0, brightness)
i+=1
temp+=1
rgb_led.write()
time.sleep_ms(delay)
if mode==7 : #三原色+三间色
temp=0
i=count
count+=1
while temp<4 :
if i>23 :
i-=24
rgb_led[i]=(brightness, 0, 0)
i+=1
temp+=1
temp=0
while temp<4 :
if i>23 :
i-=24
rgb_led[i]=(brightness, brightness, 0)
i+=1
temp+=1
temp=0
while temp<4 :
if i>23 :
i-=24
rgb_led[i]=(0, brightness, 0)
i+=1
temp+=1
temp=0
while temp<4 :
if i>23 :
i-=24
rgb_led[i]=(0, brightness, brightness)
i+=1
temp+=1
temp=0
while temp<4 :
if i>23 :
i-=24
rgb_led[i]=(0, 0, brightness)
i+=1
temp+=1
temp=0
while temp<4 :
if i>23 :
i-=24
rgb_led[i]=(brightness, 0, brightness)
i+=1
temp+=1
rgb_led.write()
time.sleep_ms(delay)
if mode==8 : #三原色+三间色重复2次
temp=0
i=count
count+=1
repeat=0
while repeat<2 :
temp=0
repeat+=1
while temp<2 :
if i>23 :
i-=24
rgb_led[i]=(brightness, 0, 0)
i+=1
temp+=1
temp=0
while temp<2 :
if i>23 :
i-=24
rgb_led[i]=(brightness, brightness, 0)
i+=1
temp+=1
temp=0
while temp<2 :
if i>23 :
i-=24
rgb_led[i]=(0, brightness, 0)
i+=1
temp+=1
temp=0
while temp<2 :
if i>23 :
i-=24
rgb_led[i]=(0, brightness, brightness)
i+=1
temp+=1
temp=0
while temp<2 :
if i>23 :
i-=24
rgb_led[i]=(0, 0, brightness)
i+=1
temp+=1
temp=0
while temp<2 :
if i>23 :
i-=24
rgb_led[i]=(brightness, 0, brightness)
i+=1
temp+=1
rgb_led.write()
time.sleep_ms(delay)
if mode==9 : #三原色+三间色重复4次
temp=0
i=count
count+=1
repeat=0
while repeat<4 :
repeat+=1
if i>23 :
i-=24
rgb_led[i]=(brightness, 0, 0)
i+=1
temp+=1
if i>23 :
i-=24
rgb_led[i]=(brightness, brightness, 0)
i+=1
temp+=1
if i>23 :
i-=24
rgb_led[i]=(0, brightness, 0)
i+=1
temp+=1
if i>23 :
i-=24
rgb_led[i]=(0, brightness, brightness)
i+=1
temp+=1
if i>23 :
i-=24
rgb_led[i]=(0, 0, brightness)
i+=1
temp+=1
if i>23 :
i-=24
rgb_led[i]=(brightness, 0, brightness)
i+=1
temp+=1
rgb_led.write()
time.sleep_ms(delay)
