ESP8266实现TCP控制LED和设置WIFI密码

B站视频演示：https://www.bilibili.com/video/BV11t4y1m79r/?vd_source=089e9c9189991f80be4b4886098da65b#reply151108474896

代码main.py，通过网页把它传入ESP8266 micropython固件中即可。如何传输自行查找资料吧。本人也忘记如何传输了。本文只是为了记录一下曾经写过的代码案例。方便以后查找。

import usocket #导入socket包
import machine
import network
import time
LED=machine.Pin(2, machine.Pin.OUT)
LED.value(1)
WIFI_flag=1;
is_flag=0
ssid="CMCC-lin-----"
pwd="linjia@15120613059"
ap_ip=""
st_ip=""
while True:
    
    if WIFI_flag == 1:
        ap = network.WLAN(network.AP_IF)
        ap.active(True)
        ap.config(essid='ESP8266_WIFI')
        ap.config(authmode=0)
        print("ESP8266_IP:",ap.ifconfig()[0]+",Port:23")#获取IP信息
        s=usocket.socket()
        s.bind(('',23)) #监听本地端口23
        s.listen(5)
    ''' 
      if WIFI_flag == 0:        
        #连接热点WIFI
        sta_if=network.WLAN(network.STA_IF)
        sta_if.active(True)
        #sta_if.scan()# 扫描当前可连接的WiFi名称
        sta_if.connect(ssid,pwd) # 设置要连接WiFi的名称和连接密码
        print("SSID:",ssid+"nPassword:",pwd)
        print("Linking WIFI...")
        while True:
            if sta_if.isconnected()==True:
               break
            else :
               time.sleep(10)              
               print("Linking WIFI error.Please reset device and input right SSID or PAWD again!n")
                 
        print("ESP8266 link WIFI status:",sta_if.isconnected())#检查是否连接成功
        print("ESP8266_IP:",sta_if.ifconfig()[0]+",Port:80")#获取IP信息
        s=usocket.socket()
        s.bind(('',80)) #监听本地端口23
        s.listen(5)
    '''
    print("waiting...")
    c,a=s.accept()
    print("one device link!")
    c.send("Hi,Welcome micropython of ESP8266n")
    while True:   
        
        client_data=c.recv(1024)#接收到的是字节
        print("client_data:",client_data)
        if client_data==b"":
           #s.listen(5)
           print("waiting...")
           c,a=s.accept()
           print("one device link!")
           c.send("Hi,Welcome micropython of ESP8266n")
        print("client:",client_data) #输出收到的消息 
        if client_data==b"ON":#判断字节
           LED.value(0)#开灯
           print("+++ LED OPEN +++")
           c.send("+++ LED OPEN +++n")
        if client_data==b"OFF":#判断字节,字符串前面加b为强制类型转换为字节
           LED.value(1)#关灯
           print("--- LED CLOSE ---")          
           c.send("Hi,Welcome ESP8266 micropythonn")
           c.send("--- LED CLOSE ---n")       
        if client_data[0:5]==b"SSID:":  #判断  要连接的WIFI 名     
           ssid=client_data[5:]
           ssid=bytes.decode(ssid)#字节转换成字符串
           print("ssid:",ssid)          
        if client_data[0:5]==b"PAWD:":  #判断WIFI密码         
           pwd=client_data[5:]
           pwd=bytes.decode(pwd)#字节转换成字符串
           print("password:",pwd)
        if client_data==b"CXIP":
           app = network.WLAN(network.AP_IF)
           sta = network.WLAN(network.STA_IF)
           print("STA_IP:",app.ifconfig()[0]+",Port:23n")
           print("AP_IP:",sta.ifconfig()[0]+",Port:23n")          
           c.send("nPort:23,STA_IP:")
           c.send(sta.ifconfig()[0])
           c.send("nPort:23,AP_IP:")
           c.send(app.ifconfig()[0])
           
        if client_data==b"WIFI_AP":
           WIFI_flag=1           
           print("--- WIFI_AP ---") 
           for i in range(1):
              LED.value(0)#开灯
              time.sleep(0.5)
              LED.value(1)#关灯
              time.sleep(0.5)
           ap = network.WLAN(network.AP_IF)
           ap.active(True)
           ap.config(essid='ESP8266_WIFI')
           ap.config(authmode=0)
           print("ESP8266_IP:",ap.ifconfig()[0]+",Port:23")#获取IP信息   
           print("waiting...")
           for i in range(2):
              LED.value(0)#开灯
              time.sleep(0.5)
              LED.value(1)#关灯
              time.sleep(0.5)
           c,a=s.accept()
           print("one device link!")
           c.send("Hi,Welcome micropython of ESP8266n")    
           for i in range(3):
              LED.value(0)#开灯
              time.sleep(0.5)
              LED.value(1)#关灯
              time.sleep(0.5)           
        if client_data==b"WIFI_ST":
           WIFI_flag=0      
           print("--- WIFI_ST ---") 
           for i in range(1):
              LED.value(0)#开灯
              time.sleep(0.5)
              LED.value(1)#关灯
              time.sleep(0.5)
           #连接热点WIFI
           sta_if=network.WLAN(network.STA_IF)
           sta_if.active(True)
           #sta_if.scan()# 扫描当前可连接的WiFi名称
           sta_if.connect(ssid,pwd) # 设置要连接WiFi的名称和连接密码
           print("SSID:",ssid+"nPassword:",pwd)
           print("Linking WIFI...")
           while True:
                if sta_if.isconnected()==True:
                   is_flag=1
                   break
                else :
                   time.sleep(10)              
                   print("Linking WIFI error.Please reset device and input right SSID or PAWD again!n")
                     
           print("ESP8266 link WIFI status:",sta_if.isconnected())#检查是否连接成功
           print("ESP8266_IP:",sta_if.ifconfig()[0]+",Port:23")#获取IP信息
           print("waiting...")
           for i in range(2):
              LED.value(0)#开灯
              time.sleep(0.5)
              LED.value(1)#关灯
              time.sleep(0.5)
           c,a=s.accept()
           print("one device link!")
           c.send("Hi,Welcome micropython of ESP8266n")  
           for i in range(3):
              LED.value(0)#开灯
              time.sleep(0.5)
              LED.value(1)#关灯
              time.sleep(0.5)