eps32+micro python+ wifi UDP方式接收和发送数据

参考王铭东 老师的教程

https://www.itprojects.cn/coursecenter-hardware.html

软件+硬件  @  MicroPython+ESP32相关@课件@五、PC远程控制ESP32 LED灯

增加功能： 接收到无效指令，返回提示信息

 

# 整体流程
# 1. 链接wifi
# 2. 启动网络功能（UDP）
# 3. 接收网络数据
# 4. 处理接收的数据import socket
import time
import network
import machinedef do_connect():wlan = network.WLAN(network.STA_IF)wlan.active(True)if not wlan.isconnected():print('connecting to network...')wlan.connect('dongfeiqiu', 'wangmingdong1225')# 输入wifi热点账号和密码i = 1while not wlan.isconnected():print("正在链接...{}".format(i))i += 1time.sleep(1)print('network config:', wlan.ifconfig())def start_udp():# 2. 启动网络功能（UDP）# 2.1. 创建udp套接字udp_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)# 2.2. 绑定本地信息udp_socket.bind(("0.0.0.0", 7788))return udp_socketdef main():# 1. 链接wifi
    do_connect()# 2. 创建UDPudp_socket = start_udp()# 3. 接收网络数据while True:recv_data, sender_info = udp_socket.recvfrom(1024)print("{}发送{}".format(sender_info, recv_data))try:# 错误信息处理recv_data_str = recv_data.decode("utf-8")print(recv_data_str)except Exception as ret:print("error:", ret)continue# 4. 处理接收的数据if recv_data_str == "light on":print("这里是要灯亮的代码...")#led.value(1)elif recv_data_str == "light off":print("这里是要灯灭的代码...")#led.value(0)else: #返回错误提示msg ="please input light on or light off"#  输入对方的ip地址dest_ip = sender_info[0]#  输入对方的portdest_port = int(sender_info[1])#  发送数据udp_socket.sendto(msg.encode("utf-8"), (dest_ip, dest_port))if __name__ == "__main__":main()