# TCP客户端（Socket通信） 实验
#
# 通过WiFi模块编程实现OpenMV的Socket通信，数据收发.
import network, usocket,pyb
# WiFi信息
SSID='MERCURY' # Network SSID
KEY='11111' # Network key
#socket数据接收中断标志位
socket_node = 0
# Init wlan module and connect to network
print("Trying to connect... (may take a while)...")
wlan = network.WINC()
wlan.connect(SSID, key=KEY, security=wlan.WPA_PSK)
# We should have a valid IP now via DHCP
print(wlan.ifconfig())
#创建socket连接，连接成功后发送“Hello 01Studio！”给服务器。
client=usocket.socket()
addr=('192.168.190.1',8080) #服务器IP和端口
client.connect(addr)
 client.send('as')
#开启定时器，周期100ms,重复执行socket通信接收任务
def fun(tim):
global socket_node
socket_node = 1
pyb.LED(3).toggle()
tim = pyb.Timer(4,freq=10)
tim.callback(fun)
while True:
if socket_node:
text=client.recv(128) #单次最多接收128字节
if text == '':
pass
else: #打印接收到的信息为字节，可以通过decode('utf-8')转成字符串
print(text)
client.send('I got:'+text.decode('utf-8'))
socket_node=0
