Socket

UDP Server

Example

Create a UDP Server to listen for data reception, and send back the same data content. Through the network-related APIs can get the current IP address of the local machine, used to provide other Client data sending.

from m5stack import *
from m5ui import *
from uiflow import *
import network
import socket

setScreenColor(0x222222)
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect('SSID', 'PASSWORD')
print(wlan.ifconfig())

udpsocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
udpsocket.bind(('0.0.0.0', 5000))
while True:
  print(udpsocket.recv(1024))
  wait_ms(2)

API

udpsocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
udpsocket.bind(('0.0.0.0', 5000))

• Create a socket server and specify the IP (usually 0.0.0.0 is used to listen locally) and the port.

udpsocket.sendto('Hello', ('192.168.31.11', 5000))

• Send data to the specified IP and port

udpsocket.close()

• Close the socket.

data = udpsocket.recv(1024)

• Block the receiving of listening data, set the maximum buffer length, and return when data is received.

data = udpsocket.read(10)

• Block the receiving of listening data, and set the length of the receiving buffer, and return when the receiving buffer is full.

UDP Client

Example

Create a UDP Client to send data to the specified server.

from m5stack import *
from m5ui import *
from uiflow import *
import socket
import time
setScreenColor(0x222222)

udpsocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
udpsocket.connect(('192.168.31.10', 5000))
while True:
  udpsocket.send('Hello World')
  wait(1)
  wait_ms(2)

API

udpsocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
udpsocket.connect(('192.168.31.10', 5000))

• Create a socket server and specify the destination IP and port to send data to.

udpsocket.send('Hello World')

• Send character data

udpsocket.write('')

• Write raw data

udpsocket.sendto('Hello World', ('192.168.31.10', 5000))

• Send data to the specified IP and port

udpsocket.close()

• Close the socket.

data = udpsocket.recv(1024)

• Block the receiving of listening data, set the maximum buffer length, and return when data is received.

data = udpsocket.read(10)

• Block the receiving of listening data, and set the length of the receiving buffer, and return when the receiving buffer is full.