5.网络 例程讲解#
1. network - wlan 例程#
本示例程序用于对 CanMV 开发板进行一个 network wlan 的功能展示。
import network
def sta_test():
sta=network.WLAN(0)
#查看sta是否激活
print(sta.active())
#查看sta状态
print(sta.status())
#扫描并打印结果
print(sta.scan())
#sta连接ap
print(sta.connect("wjx_pc","12345678"))
#状态
print(sta.status())
#查看ip配置
print(sta.ifconfig())
#查看是否连接
print(sta.isconnected())
#断开连接
print(sta.disconnect())
#连接ap
print(sta.connect("wjx_pc","12345678"))
#查看状态
print(sta.status())
def ap_test():
ap=network.WLAN(network.AP_IF)
#查看ap是否激活
print(ap.active())
#配置并创建ap
ap.config(ssid='k230_ap_wjx', channel=11, key='12345678')
#查看ap的ssid号
print(ap.config('ssid'))
#查看ap的channel
print(ap.config('channel'))
#查看ap的所有配置
print(ap.config())
#查看ap的状态
print(ap.status())
#sta是否连接ap
print(ap.isconnected())
sta_test()
ap_test()
2. tcp - client 例程#
本示例程序用于对 CanMV 开发板进行一个 tcp client 的功能展示。
#配置 tcp/udp socket调试工具
import socket
import time
PORT=60000
def client():
#获取地址及端口号 对应地址
ai = socket.getaddrinfo("10.100.228.5", PORT)
#ai = socket.getaddrinfo("10.10.1.94", PORT)
print("Address infos:", ai)
addr = ai[0][-1]
print("Connect address:", addr)
#建立socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
#连接地址
s.connect(addr)
for i in range(10):
str="K230 tcp client send test {0} \r\n".format(i)
print(str)
#print(s.send(str))
#发送字符串
print(s.write(str))
time.sleep(0.2)
#time.sleep(1)
#print(s.recv(4096))
#print(s.read())
#延时1秒
time.sleep(1)
#关闭socket
s.close()
print("end")
#main()
client()
3. udp - server 例程#
本示例程序用于对 CanMV 开发板进行一个 udp server 的功能展示。
#配置 tcp/udp socket调试工具
import socket
import time
import network
PORT=60000
def udpserver():
#获取地址及端口号对应地址
ai = socket.getaddrinfo("0.0.0.0", PORT)
#ai = socket.getaddrinfo("10.10.1.94", 60000)
print("Address infos:", ai)
addr = ai[0][-1]
print("udp server %s port:%d\n" % ((network.LAN().ifconfig()[0]),PORT))
#建立socket
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
#设置属性
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
#绑定
s.bind(addr)
print("a")
#延时
time.sleep(1)
for j in range(10):
try:
#接受内容
data, addr = s.recvfrom(800)
print("b")
except:
continue
#打印内容
print("recv %d" % j,data,addr)
#回复内容
s.sendto(b"%s have recv count=%d " % (data,j), addr)
#关闭
s.close()
print("udp server exit!!")
#main()
udpserver()
4. http - client 例程#
本示例程序用于对 CanMV 开发板进行一个 http client 的功能展示。
import socket
def main(use_stream=True):
#创建socket
s = socket.socket()
#获取地址及端口号 对应地址
ai = socket.getaddrinfo("www.baidu.com", 80)
#ai = socket.getaddrinfo("10.100.228.5", 8080)
print("Address infos:", ai)
addr = ai[0][-1]
print("Connect address:", addr)
#连接
s.connect(addr)
if use_stream:
# MicroPython socket objects support stream (aka file) interface
# directly, but the line below is needed for CPython.
s = s.makefile("rwb", 0)
#发送http请求
s.write(b"GET /index.html HTTP/1.0\r\n\r\n")
#打印请求内容
print(s.read())
else:
#发送http请求
s.send(b"GET /index.html HTTP/1.0\r\n\r\n")
#打印请求内容
print(s.recv(4096))
#print(s.read())
#关闭socket
s.close()
#main()
main(use_stream=True)
main(use_stream=False)
5. udp - client 例程#
本示例程序用于对 CanMV 开发板进行一个 udp client 的功能展示。
#配置 tcp/udp socket调试工具
import socket
import time
def udpclient():
#获取地址和端口号 对应地址
ai = socket.getaddrinfo("10.100.228.5", 60000)
#ai = socket.getaddrinfo("10.10.1.94", 60000)
print("Address infos:", ai)
addr = ai[0][-1]
print("Connect address:", addr)
#建立socket
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
for i in range(10):
str="K230 udp client send test {0} \r\n".format(i)
print(str)
#发送字符串
print(s.sendto(str,addr))
#延时
time.sleep(0.2)
#time.sleep(1)
#print(s.recv(4096))
#print(s.read())
#延时
time.sleep(1)
#关闭
s.close()
print("end")
#main()
udpclient()
6. http - server 例程#
本示例程序用于对 CanMV 开发板进行一个 http server 的功能展示。
# port from micropython/examples/network/http_server.py
import socket
import network
import time
# print(network.LAN().ifconfig()[0])
# print("Listening, connect your browser to http://%s:8081/" % (network.LAN().ifconfig()[0]))
CONTENT = b"""\
HTTP/1.0 200 OK
Hello #%d from k230 canmv MicroPython!
"""
def main(micropython_optimize=True):
#建立socket
s = socket.socket()
#获取地址及端口号 对应地址
# Binding to all interfaces - server will be accessible to other hosts!
ai = socket.getaddrinfo("0.0.0.0", 8081)
print("Bind address info:", ai)
addr = ai[0][-1]
#设置属性
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
#绑定地址
s.bind(addr)
#开始监听
s.listen(5)
print("Listening, connect your browser to http://%s:8081/" % (network.LAN().ifconfig()[0]))
counter = 0
while True:
#接受连接
res = s.accept()
client_sock = res[0]
client_addr = res[1]
print("Client address:", client_addr)
print("Client socket:", client_sock)
#非阻塞模式
client_sock.setblocking(False)
if not micropython_optimize:
# To read line-oriented protocol (like HTTP) from a socket (and
# avoid short read problem), it must be wrapped in a stream (aka
# file-like) object. That's how you do it in CPython:
client_stream = client_sock.makefile("rwb")
else:
# .. but MicroPython socket objects support stream interface
# directly, so calling .makefile() method is not required. If
# you develop application which will run only on MicroPython,
# especially on a resource-constrained embedded device, you
# may take this shortcut to save resources.
client_stream = client_sock
print("Request:")
#获取内容
req = client_stream.read()
print(req)
while True:
##获取内容
h = client_stream.read()
if h == b"" or h == b"\r\n":
break
print(h)
#回复内容
client_stream.write(CONTENT % counter)
#time.sleep(0.5)
#关闭
client_stream.close()
# if not micropython_optimize:
# client_sock.close()
counter += 1
#print("wjx", counter)
if counter > 20 :
print("http server exit!")
#关闭
s.close()
break
main()
7. tcp - server 例程#
本示例程序用于对 CanMV 开发板进行一个 tcp server 的功能展示。
#配置 tcp/udp socket调试工具
import socket
import network
import time
PORT=60000
CONTENT = b"""
Hello #%d from k230 canmv MicroPython!
"""
def server():
counter=1
#获取地址及端口号 对应地址
#ai = socket.getaddrinfo("10.100.228.5", 8000)
ai = socket.getaddrinfo("0.0.0.0", PORT)
print("Address infos:", ai,PORT)
addr = ai[0][-1]
print("Connect address:", addr)
#建立socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
#设置属性
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
#绑定
s.bind(addr)
#监听
s.listen(5)
print("tcp server %s port:%d\n" % ((network.LAN().ifconfig()[0]),PORT))
while True:
#接受连接
res = s.accept()
client_sock = res[0]
client_addr = res[1]
print("Client address:", client_addr)
print("Client socket:", client_sock)
client_sock.setblocking(False)
client_stream = client_sock
#发送字符传
client_stream.write(CONTENT % counter)
while True:
#读取内容
h = client_stream.read()
if h != b"" :
print(h)
#回复内容
client_stream.write("recv :%s" % h)
if "end" in h :
#关闭socket
client_stream.close()
break
counter += 1
if counter > 10 :
print("server exit!")
#关闭
s.close()
break
#main()
server()
8. network - lan 例程#
本示例程序用于对 CanMV 开发板进行一个 network lan 的功能展示。
import network
def main():
#获取lan接口
a=network.LAN()
#获取网口是否在使用
print(a.active())
#关闭网口
print(a.active(0))
#使能网口
print(a.active(1))
#查看网口 ip，掩码，网关，dns配置
print(a.ifconfig())
#设置网口 ip，掩码，网关，dns配置
print(a.ifconfig(('192.168.0.4', '255.255.255.0', '192.168.0.1', '8.8.8.8')))
#查看网口 ip，掩码，网关，dns配置
print(a.ifconfig())
#设置网口为dhcp模式
print(a.ifconfig("dhcp"))
#查看网口 ip，掩码，网关，dns配置
print(a.ifconfig())
#查看网口mac地址
print(a.config("mac"))
#设置网口mac地址
print(a.config(mac="42:EA:D0:C2:0D:83"))
#查看网口mac地址
print(a.config("mac"))
#设置网口为dhcp模式
print(a.ifconfig("dhcp"))
#查看网口 ip，掩码，网关，dns配置
print(a.ifconfig())
main()