tpyboard v202 测试tcp通讯，i2c的oled程序，呼吸灯源码，希望对大家有所帮助

1、下载到板子里的main.py代码
如果需要驱动oled的，可以参考我上面那篇文章
import time, math
import machine
import network
# from ssd1306 import SSD1306_I2C

# def oled_text(str,x=0,y=0):
#     from machine import I2C
#     i2c=machine.I2C(-1, sda=machine.Pin(4), scl=machine.Pin(5), freq=100000)
#
#     oled = SSD1306_I2C(128,64, i2c)
#     oled.text(str, x, y)
#     oled.show()
# now use socket as usual
import socket
def socket_server_test():
    s = socket.socket()
    host = socket.gethostname()  # 获取本地主机名
    port = 12345  # 设置端口
    s.bind((host, port))  #     绑定端口
    s.listen(5)  # 等待客户端连接
    while True:
        c, addr = s.accept()  # 建立客户端连接
        print('连接地址：', addr)
        c.send('tpyboard 正在通过tcp协议向server发送数据！')
        c.close()  # 关闭连接
def socket_clent_test():
    s = socket.socket()
    try :
        s.connect(('192.168.31.244',55555))
        s.send(b'test success')
        data = s.recv(1000)
        print (data)
        s.close()
    except Exception as e :
        print (e)

def do_connect():
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    if not wlan.isconnected():
        print('connecting to network...')
        wlan.connect('pang', 'ldx19891025')
        while not wlan.isconnected():
            print("wifi connecting")
        # oled_text ("wifi connect success")

        print('network config:', wlan.ifconfig())

def pulse( t):
    led = machine.PWM(machine.Pin(2), freq=100)
    for i in range(20):
        led.duty(int(math.sin(i / 10 * math.pi) * 500 + 500))
        time.sleep_ms(t)

# oled_text('--display test--', y=56)
while True:
    do_connect()
    time.sleep(1)
    socket_clent_test()
    print('-------')
    # oled_text('--display test--',y=8)

    pulse( 30)

2、后台电脑上的代码

#!/usr/bin/python3
# 文件名：server.py

# 导入 socket、sys 模块
import socket
import sys

# 创建 socket 对象
serversocket = socket.socket()
# 绑定端口号
serversocket.bind(("192.168.31.244", 55555))

# 设置最大连接数，超过后排队
serversocket.listen(5)

while True:
    # 建立客户端连接
    clientsocket, addr = serversocket.accept()
    # print(clientsocket,addr)
    print("连接地址: %s" % str(addr))
    buf = clientsocket.recv(1024)
    print (buf)
    msg = 'test success ！' + "\r\n"
    clientsocket.send(msg.encode('utf-8'))
    clientsocket.close()