WiFi AP mode example refuses connection

Official Hardware Nano Family Nano RP2040 Connect
1

I am having problems with the following code from:

# Wi-Fi AP Mode Example
#
# This example shows how to use Wi-Fi in Access Point mode.
import network, socket, sys, time, gc

SSID ='My_Nano_RP2040_Connect'   # Network SSID
KEY  ='1234567890'  # Network key (must be 10 chars)
HOST = ''           # Use first available interface
PORT = 8080         # Arbitrary non-privileged port

# Init wlan module and connect to network
wlan = network.WLAN(network.AP_IF)
wlan.active(True)
wlan.config(ssid=SSID, key=KEY, security=wlan.WEP, channel=2)
print("AP mode started. SSID: {} IP: {}".format(SSID, wlan.ifconfig()[0]))

def recvall(sock, n):
    # Helper function to recv n bytes or return None if EOF is hit
    data = bytearray()
    while len(data) < n:
        packet = sock.recv(n - len(data))
        if not packet:
            raise OSError("Timeout")
        data.extend(packet)
    return data

def start_streaming(server):
    print ('Waiting for connections..')
    client, addr = server.accept()

    # set client socket timeout to 5s
    client.settimeout(10.0)
    print ('Connected to ' + addr[0] + ':' + str(addr[1]))

    # FPS clock
    clock = time.clock()
    while (True):
        try:
            # Read data from client
            data = recvall(client, 1024)
            # Send it back
            client.send(data)
        except OSError as e:
            print("start_streaming(): socket error: ", e)
            client.close()
            break

while (True):
    try:
        server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        # Bind and listen
        server.bind([HOST, PORT])
        server.listen(1)

        # Set server socket to blocking
        server.setblocking(True)
        while (True):
            start_streaming(server)
    except OSError as e:
        server.close()
        print("Server socket error: ", e)

When I run the above code I get an IP Address and a message that says "Waiting for connections".

"AP mode started. SSID: My_Nano_RP2040_Connect IP: 192.168.4.1
Waiting for connections.."

When I try to connect to the IP address I get a connection refused message from the laptop (Windows 10/ Google Chrome).

2

After removing some redundant code that was causing errors and temporarily disabling timeouts, I can now Telnet to the RP2040 Connect. The modified code and results follows:

 #Wi-Fi AP Mode Example
#
# This example shows how to use Wi-Fi in Access Point mode.
import network, socket, sys, time, gc

SSID ='My_Nano_RP2040_Connect'   # Network SSID
KEY  ='1234567890'  # Network key (must be 10 chars)
HOST = ''           # Use first available interface
PORT = 8080         # Arbitrary non-privileged port

# Init wlan module and connect to network
wlan = network.WLAN(network.AP_IF)
wlan.active(True)
wlan.config(ssid=SSID, key=KEY, security=wlan.WEP, channel=2)
print("AP mode started. SSID: {} IP: {}".format(SSID, wlan.ifconfig()[0]))

def recvall(sock, n):
    # Helper function to recv n bytes or return None if EOF is hit
    data = bytearray()
    while len(data) < n:
        packet = sock.recv(n - len(data))
        print ("Packet",packet)
        
        if not packet:
            raise OSError("Timeout")
        data.extend(packet)
        
    return data

def start_streaming(server):
    print ('Waiting for connections..')
    client, addr = server.accept()

    # set client socket timeout to 30s
    # Comment this out for no timeouts
    #client.settimeout(30.0)
    print ('Connected to ' + addr[0] + ':' + str(addr[1]))

     
    while (True):
        try:
            # Read data from client
            data = recvall(client, 1024)
            # Send it back
            client.send(data)
        except OSError as e:
            print("start_streaming(): socket error: ", e)
            client.close()
            break

while (True):
    try:
        server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        # Bind and listen
        server.bind([HOST, PORT])
        server.listen(1)
        print("Listening")

        # Set server socket to blocking
        server.setblocking(True)
        while (True):
            start_streaming(server)
    except OSError as e:
        server.close()
        print("Server socket error: ", e)type or paste code here

Response:

AP mode started. SSID: My_Nano_RP2040_Connect IP: 192.168.4.1
Listening
Waiting for connections..
Connected to 192.168.4.3:64772
Packet b"\xff\xfb\x1f\xff\xfb \xff\xfb\x18\xff\xfb'\xff\xfd\x01\xff\xfb\x03\xff\xfd\x03"
Packet b'Hello World'
Packet b'\r\n'

3

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.