ESP32 RGB点阵 三种随机颜色模式
由于之前的RGB点阵程序中的后两个模式灯的颜色过饱和影响观感，本程序把这两个模式整合到所有灯取随机颜色的程序，分别实现所有灯各取随机颜色、每一圈的灯取随机颜色和每相邻４灯取同一种随机颜色。
本程序增加了服务器功能，可以通过网页显示温湿度。由于程序运行网络功能需要的时间较长，本程序增大了可交互超声波云台每次舵机的转动角度，其它功能与之前的程序类似。
更新：由于运行定时器中断可能使网页功能不能正常运行，改用多线程。目前多线程功能不完善，可能报错。文章来源：https://www.toymoban.com/news/detail-527942.html
代码如下文章来源地址https://www.toymoban.com/news/detail-527942.html
'''
舵机-->(22)
(Trig)-->(5)
(Echo)-->(18)
SCL-->16
SDA-->17
DS-->27
WS-->(13)
'''
#导入Pin模块
from machine import Pin
import time
from servo import Servo
from machine import Timer
from hcsr04 import HCSR04
from neopixel import NeoPixel
import random
from machine import ADC
import dht
import network
import socket
import _thread
#定义HCSR04控制对象
hcsr04=HCSR04(trigger_pin=5, echo_pin=18)
#定义SG90舵机控制对象
servo = Servo(Pin(22))
#定义RGB控制对象
#控制引脚为13，RGB灯串联5个
pin=13
rgb_num=64
rgb_led=NeoPixel(Pin(pin,Pin.OUT),rgb_num)
# LCD 1602 I2C 地址
DEFAULT_I2C_ADDR = 0x27
# 初始化GPIO口
#定义按键控制对象
key1=Pin(12,Pin.IN,Pin.PULL_UP)
key2=Pin(14,Pin.IN,Pin.PULL_UP)
key3=Pin(26,Pin.IN,Pin.PULL_UP)
key4=Pin(25,Pin.IN,Pin.PULL_UP)
key5=Pin(33,Pin.IN,Pin.PULL_UP)
key6=Pin(32,Pin.IN,Pin.PULL_UP)
key_en=1
#按键扫描函数
def key_scan():
global key_en
if key_en==1 and (key1.value()==0 or key2.value()==0 or key3.value()==0 or key4.value()==0 or
key5.value()==0 or key6.value()==0 ):
time.sleep_ms(10)
key_en=0
if key1.value()==0:
return 1
elif key2.value()==0:
return 2
elif key3.value()==0:
return 3
elif key4.value()==0:
return 4
elif key5.value()==0:
return 5
elif key6.value()==0:
return 6
elif (key1.value()==1 and key2.value()==1 and key3.value()==1 and key4.value()==1 and
key5.value()==1 and key6.value()==1 ) :
key_en=1
return 0
brightness=12
delay=400
mode=1
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<30 :
brightness+=2
elif key==2 and brightness>8 :
brightness-=2
elif key==3 and delay<1000 :
delay+=100
elif key==4 and delay>200 :
delay-=100
elif key==5 and mode<3 :
mode+=1
elif key==6 and mode>0 :
mode-=1
#定义LED控制对象
led1=Pin(15,Pin.OUT,Pin.PULL_DOWN)
relay=Pin(2,Pin.OUT,Pin.PULL_DOWN)
#定义DHT22控制对象
sensor=dht.DHT22(Pin(27))
#连接的WIFI账号和密码
ssid = " "
password = " "
temp = hum = 99
def read_sensor():
global temp, hum
try:
sensor.measure()
temp = sensor.temperature()
hum = sensor.humidity()
if (isinstance(temp, float) and isinstance(hum, float)) or (isinstance(temp, int) and isinstance(hum, int)):
msg = (b'{0:3.1f},{1:3.1f}'.format(temp, hum))
# uncomment for Fahrenheit
#temp = temp * (9/5) + 32.0
temp = round(temp, 1)
hum = round(hum, 1)
return(msg)
else:
return('Invalid sensor readings.')
except OSError as e:
return('Failed to read sensor.')
#WIFI连接
def wifi_connect():
wlan=network.WLAN(network.STA_IF) #STA模式
wlan.active(True) #激活
if not wlan.isconnected():
print("conneting to network...")
wlan.connect(ssid,password) #输入 WIFI 账号密码
while not wlan.isconnected():
led1.value(1)
time.sleep_ms(300)
led1.value(0)
time.sleep_ms(300)
led1.value(0)
return False
else:
led1.value(0)
print("network information:", wlan.ifconfig())
return True
#网页数据
def web_page():
html = """<!DOCTYPE HTML><html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css" integrity="sha384-fnmOCqbTlWIlj8LyTjo7mOUStjsKC4pOpQbqyi7RrhN7udi9RwhKkMHpvLbHG9Sr" crossorigin="anonymous">
<style>
html {
font-family: Arial;
display: inline-block;
margin: 0px auto;
text-align: center;
}
h2 { font-size: 3.0rem; }
p { font-size: 3.0rem; }
.units { font-size: 1.2rem; }
.dht-labels{
font-size: 1.5rem;
vertical-align:middle;
padding-bottom: 15px;
}
</style>
</head>
<body>
<h2>ESP32 DHT22 Acquisition</h2>
<p>
<i class="fas fa-thermometer-half" style="color:#059e8a;"></i>
<span class="dht-labels">Temperature</span>
<span>"""+str(temp)+"""</span>
<sup class="units">°C</sup>
</p>
<p>
<i class="fas fa-tint" style="color:#00add6;"></i>
<span class="dht-labels">Humidity</span>
<span>"""+str(hum)+"""</span>
<sup class="units">%</sup>
</p>
</body>
</html>"""
return html
b=0
c=120
g=0
h=0
k=0
l=0
m=0
servo.write_angle(c)
#定时器0中断函数
def time0_irq(i1,i2):
global b
global c
global g
global h
global k
global l
global m
global temp, hum
global brightness
global mode
global delay
while True:
key_get()
distance=hcsr04.distance_cm()
if distance>15 and c<=120:
c+=5
servo.write_angle(c)
if distance<15 and distance>=0 and c>=40:
c-=5
servo.write_angle(c)
g+=1
m+=1
if g==4 : #每4个周期RGB灯随机变色,屏幕刷新
g=0
if mode==1 :
i=0
relay.value(1)
for i in range(rgb_num):
d=random.randint(0,brightness)
e=random.randint(0,brightness)
f=random.randint(0,brightness)
rgb_led[i]=(d, e, f)
rgb_led.write()
if mode==0 :
relay.value(0)
for i in range(rgb_num):
rgb_led[i]=(0, 0, 0)
rgb_led.write()
if mode==2 : #滚动显示
relay.value(1)
i=0
repeat=0
d1=random.randint(0,brightness)
e1=random.randint(0,brightness)
f1=random.randint(0,brightness)
d2=random.randint(0,brightness)
e2=random.randint(0,brightness)
f2=random.randint(0,brightness)
d3=random.randint(0,brightness)
e3=random.randint(0,brightness)
f3=random.randint(0,brightness)
d4=random.randint(0,brightness)
e4=random.randint(0,brightness)
f4=random.randint(0,brightness)
while repeat<4 : #重复
repeat+=1
temp=0
while temp<4 :
if i>63 :
i-=63
rgb_led[i]=(d1, e1, f1)
i+=1
if i>63 :
i-=63
rgb_led[i]=(d2, e2, f2)
i+=1
temp+=1
temp=0
while temp<4 :
if i>63 :
i-=63
rgb_led[i]=(d3, e3, f3)
i+=1
if i>63 :
i-=63
rgb_led[i]=(d4, e4, f4)
i+=1
temp+=1
rgb_led.write()
if mode==3 : #同心矩形
relay.value(1)
d1=random.randint(0,brightness)
e1=random.randint(0,brightness)
f1=random.randint(0,brightness)
d2=random.randint(0,brightness)
e2=random.randint(0,brightness)
f2=random.randint(0,brightness)
d3=random.randint(0,brightness)
e3=random.randint(0,brightness)
f3=random.randint(0,brightness)
d4=random.randint(0,brightness)
e4=random.randint(0,brightness)
f4=random.randint(0,brightness)
i=0
while i<64:
rgb_led[i]=(d1, e1, f1)
i+=1
i=9
while i<55:
rgb_led[i]=(d2, e2, f2)
i+=1
if i%8==7:
i+=2
i=18
while i<46:
rgb_led[i]=(d3, e3, f3)
i+=1
if i%8==6:
i+=4
i=27
while i<37:
rgb_led[i]=(d4, e4, f4)
i+=1
if i%8==5:
i+=6
rgb_led.write()
time.sleep_ms(delay)
wifi_connect()
#SOCK_STREAM表示的是TCP协议，SOCK_DGRAM表示的是UDP协议
my_socket=socket.socket(socket.AF_INET, socket.SOCK_STREAM) #创建socket连接
# 将socket对象绑定ip地址和端口号
my_socket.bind(('', 80))
# 相当于电话的开机 括号里的参数表示可以同时接收5个请求
my_socket.listen(5)
time0=Timer(0) #创建time0定时器对象
time0.init(period=100,mode=Timer.PERIODIC,callback=time0_irq)
def server(i1,i2):
while True:
try:
read_sensor()
# 进入监听状态，等待别人链接过来，有两个返回值，
#一个是对方的socket对象，一个是对方的ip以及端口
client, addr = my_socket.accept()
print('Got a connection from %s' % str(addr))
# recv表示接收，括号里是最大接收字节
request = client.recv(1024)
request = str(request)
print('Content = %s' % request)
response = web_page()
client.send('HTTP/1.1 200 OK\n')
client.send('Content-Type: text/html\n')
client.send('Connection: close\n\n')
client.sendall(response)
client.close()
except OSError as e:
conn.close()
print('Connection closed')
i1=0
i2=0
_thread.start_new_thread(server, (i1,i2))
_thread.start_new_thread(time0_irq, (i1, i2))
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