<![CDATA[LAN W5500 socket listening does not work]]>Hi friends

I have written a simply micropython test program as a web server.
It works when I am using the configured ip address of wifi connection (ip via dhcp).
Then I have tried the LAN base module W5500 V12.
Unfortunately it does not work with the configured ip address of the ethernet module (ip via dhcp) .

I have used....
lan = module.get(module.LANBASE)
...instead of...
lan = network.LAN(mdc=23, mdio=18, power=21, phy_type=network.PHY_W5500, phy_addr=0)
lan.active(True)
...because I get an error message that network does not support LAN methode.

Here is my micropython example code:

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

#WiFi
wifiCfg.screenShow()
wifiCfg.autoConnect(lcdShow=True)
wifiIp = wifiCfg.wlan_sta.ifconfig()[0]
title0 = M5Title(title="SERVER-EXAMPLE", x=95, fgcolor=0xFFFFFF, bgcolor=0xff001d)
label0 = M5TextBox(10, 40, "WiFi ip :" + str(wifiIp), lcd.FONT_Ubuntu, 0xfff500, rotate=0)

#Ethernet
lan = module.get(module.LANBASE)
#lan = network.LAN(mdc=23, mdio=18, power=21, phy_type=network.PHY_W5500, phy_addr=0)
#lan.active(True)
eth0Ip = lan.get_if_config()[0]
label1 = M5TextBox(10, 60, "Eth0 ip :" + str(eth0Ip), lcd.FONT_Ubuntu, 0xfff500, rotate=0)

#Choose ip address
ip = wifiIp # works
#ip = eth0Ip # does not work

#Socket binding
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind((ip, 80))

label2 = M5TextBox(10, 80, "SERVER running at " + ip, lcd.FONT_Ubuntu, 0xfff500, rotate=0)

#Listening
sock.listen(1)
while True:
conn, addr = sock.accept()
print('Connection from:', addr)
conn.sendall('Hello, world!')
conn.close()

]]>https://community.m5stack.com/topic/5061/lan-w5500-socket-listening-does-not-workRSS for NodeTue, 28 Apr 2026 16:26:18 GMTFri, 17 Feb 2023 07:32:07 GMT60<![CDATA[Reply to LAN W5500 socket listening does not work on Wed, 03 Jan 2024 22:16:07 GMT]]>@m5stickfreakler hi - did you ever solve this? I am having the same problem with both the LAN Module and the LAN Base - it initialises the LAN, gets an IP address, but just won't accept data from a browser when I try the following code:
s = socket.socket()
s.bind(('172.17.15.87',80))
s.listen(1)

I would love to get this sorted!

Cheers,

]]>https://community.m5stack.com/post/23219https://community.m5stack.com/post/23219Wed, 03 Jan 2024 22:16:07 GMT<![CDATA[Reply to LAN W5500 socket listening does not work on Fri, 17 Feb 2023 16:30:07 GMT]]>tried with modified code, but no luck:

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

#WiFi
wifiCfg.screenShow()
wifiCfg.autoConnect(lcdShow=True)
wifiIp = wifiCfg.wlan_sta.ifconfig()[0]
title0 = M5Title(title="SERVER-EXAMPLE", x=95, fgcolor=0xFFFFFF, bgcolor=0xff001d)
label0 = M5TextBox(10, 40, "WiFi ip :" + str(wifiIp), lcd.FONT_Ubuntu, 0xfff500, rotate=0)

counter = 0

#Ethernet
lan = module.get(module.LANBASE)
eth0Ip = lan.get_if_config()[0]
label1 = M5TextBox(10, 60, "Eth0 ip :" + str(eth0Ip), lcd.FONT_Ubuntu, 0xfff500, rotate=0)
lan.tcp_udp_config(eth0Ip, 80, 1, 1) ## es muss ein call gemacht werden, damit das Programm weiter läuft

#Choose ip address
#ip = wifiIp # works
ip = eth0Ip # does not work

label2 = M5TextBox(10, 80, "SERVER is running", lcd.FONT_Ubuntu, 0xfff500, rotate=0)

label3 = M5TextBox(10, 100, "waiting...", lcd.FONT_Ubuntu, 0xfff500, rotate=0)
label4 = M5TextBox(10, 120, "received?", lcd.FONT_Ubuntu, 0xfff500, rotate=0)

if ip == wifiIp:

server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
server.settimeout(30)
server.bind((wifiIp, 80))

while True:
    server.listen(1)
    
    (conn, addr) = server.accept()
    request = conn.recv(4096)

    if request:
        counter = counter + 1
        request = str(request)
        conn, addr = server.accept()
        label3.setText(str(counter))
        label4.setText(str(request))
        response = 'Hello, world!'
        conn.sendall(response)
        conn.close()

    wait_ms(2)

if ip == eth0Ip:

while True:
    if lan.is_available_packet(1):
        counter = counter + 1
        request = str(lan.tcp_receive_packet(0))
        label3.setText(str(counter))
        label4.setText(str(request))
        response = 'Hello, world!'
        lan.tcp_send_packet(response)

    wait_ms(2)
]]>https://community.m5stack.com/post/20117https://community.m5stack.com/post/20117Fri, 17 Feb 2023 16:30:07 GMT<![CDATA[Reply to LAN W5500 socket listening does not work on Fri, 17 Feb 2023 15:55:39 GMT]]>Hi felmue
Thanks for your appreciated reply.
Unfortunately it is unusable for me in that way. I would like to bind the ip address to a socket on port 80 (http server). And I dont want that the application is blocked until a client connects.
best regards

]]>https://community.m5stack.com/post/20116https://community.m5stack.com/post/20116Fri, 17 Feb 2023 15:55:39 GMT<![CDATA[Reply to LAN W5500 socket listening does not work on Fri, 17 Feb 2023 13:31:39 GMT]]>Hello @M5StickFreakler

have you tried the example? It works for me.

Note: the Init LAN block blocks until a client connects.

Thanks
Felix

]]>https://community.m5stack.com/post/20113https://community.m5stack.com/post/20113Fri, 17 Feb 2023 13:31:39 GMT