功夫不负有心人，经过多日苦心摸索，终于攻克网页端控制LED的亮灭。
首先编写以下代码：
from machine import Pinimport networkimport socketimport timeled = Pin(2,Pin.OUT)ssid = "iPhone (50)"password = "qq7895123"def wifi_connect():global wlanwlan=network.WLAN(network.STA_IF)wlan.active(True)if not wlan.isconnected():print("connecting to network ......")wlan.connect(ssid,password)while not wlan.isconnected():led.value(1)time.sleep_ms(250)led.value(0)time.sleep_ms(250)led.value(0)return Falseelse:led.value(0)print("network information：",wlan.ifconfig())return Truedef web_page():html="""<html><head><meta name="viewport"content="width=device-width,initial-scale=1"></head><bady><h1>0jay Server</h1><ahref= "?led=on\"><button>ON</button></a > <ahref=\"?led=off\"><button>OFF</button></a ></BODY><html>"""return htmlif __name__=="__main__":if wifi_connect():s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)s.bind(('',80))s.listen(5)while True:conn,addr = s.accept()print('Got a connection from %s' % str(addr))request = conn.recv(1024)request = str(request)print('Content = %s'% request)led_on = request.find('/?led=on')led_off= request.find('/?led=off')if led_on ==6:print('LED ON')led.value(1)if led_off ==6:print('LED OFF')led.value(0)response = web_page()conn.send('HTTP/1.1 200 OK\n')conn.send('Content-Type:text/html\n')conn.send('Connection:close\n\n')conn.send('HTTP/1.1 200 OK\n')conn.sendall(response)conn.close()
然后，下载到ESP32中运行。
最后，打开网页，即可控制LED的亮灭。
