Client disconnected when using WiFi AP

Technical Discussion AMB82-mini
1

我嘗試在AMB82上建立WiFi AP，電腦可以連上AP，然後電腦的python程式可以跟AMB82透過訊息溝通，但是當透過WiFi client建立連線，馬上就會client disconnected。訊息根本無法傳送。
我用的是arduino IDE，版本是4.0.9-build20250325。同樣的程式碼在esp32上面不會有馬上client disconnect的問題，拜託幫幫忙
以下是簡單的ino程式碼:
#include <WiFi.h>

// AP configuration
char ssid = “AMB82_AP”; // AP SSID
char pass = “12345678”; // AP password (minimum 8 characters)
char channel = “1”; // AP channel
int ssid_status = 0; // 0 = visible SSID, 1 = hidden SSID
int status = WL_IDLE_STATUS; // WiFi status indicator

WiFiServer server(80); // Create server on port 80

void setup() {
// Initialize serial communication
Serial.begin(115200);
while (!Serial) {
; // wait for serial port to connect
}

// Start Access Point
Serial.print("Setting up Access Point with SSID: ");
Serial.println(ssid);

status = WiFi.apbegin(ssid, pass, channel, ssid_status);

// Wait for AP to initialize
delay(5000);

if (status != WL_CONNECTED) {
    Serial.println("Failed to set up AP. Retrying...");
    while (status != WL_CONNECTED) {
        status = WiFi.apbegin(ssid, pass, channel, ssid_status);
        delay(5000);
    }
}

// AP started
Serial.println("AP mode started successfully");
printWifiData();

// Start the server
server.begin();
Serial.println("Server started and listening on port 80");

}

void loop() {
// Check if a client has connected
WiFiClient client = server.available();

if (client) {
    Serial.println("New client connected");
    
    // While client is connected
    while (client.connected()) {
        // If there's data available to read
        if (client.available()) {
            String message = client.readStringUntil('\n');
            
            // Print received message to serial monitor
            Serial.print("Received: ");
            Serial.println(message);
            
            // Send a response back to the client
            String response = "AMB82 received: " + message;
            client.println(response);
            
            // Ensure the data is sent
            client.flush();
        }
    }
    
    Serial.println("Client disconnected");
}

}

void printWifiData() {
// Print WiFi AP information
IPAddress ip = WiFi.localIP();
Serial.print("IP Address: ");
Serial.println(ip);

Serial.print("SSID: ");
Serial.println(WiFi.SSID());

// Print the MAC address of AP
byte bssid[6];
WiFi.BSSID(bssid);
Serial.print("BSSID: ");
for (int i = 0; i < 5; i++) {
    Serial.print(bssid[i], HEX);
    Serial.print(":");
}
Serial.println(bssid[5], HEX);

// Print the encryption type
byte encryption = WiFi.encryptionType();
Serial.print("Encryption Type: ");
Serial.println(encryption, HEX);
Serial.println();

}

與之對應的python程式碼:
import socket
import time

def connect_to_amb82():
print(“Attempting to connect to AMB82-Mini AP…”)

# AMB82 AP information
host = "192.168.1.1"  # Default IP of AMB82 when in AP mode
port = 80  # Port the server is running on

# Create a socket object
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

try:
    # Connect to the AMB82
    s.connect((host, port))
    print(f"Connected to AMB82 at {host}:{port}")
    return s
except socket.error as e:
    print(f"Connection failed: {e}")
    print("Make sure your computer is connected to the AMB82_AP WiFi network")
    return None

def send_message(sock, message):
if sock is None:
print(“Not connected to AMB82”)
return

try:
    # Send message with newline terminator
    sock.send((message + "\n").encode())

    # Receive response
    response = sock.recv(1024)

    # Display the response
    if response:
        print("\nResponse from AMB82:")
        print(response.decode('utf-8', errors='ignore'))
    else:
        print("\nNo response received from AMB82")

except socket.error as e:
    print(f"Error sending/receiving: {e}")

def interactive_mode():
# Connect to AMB82
sock = connect_to_amb82()
if sock is None:
return

print("\nEntering interactive mode. Type 'exit' to quit.")

try:
    while True:
        # Get message from user
        message = input("> ")
        if message.lower() == 'exit':
            break

        # Send message
        send_message(sock, message)

except KeyboardInterrupt:
    print("\nExiting...")
finally:
    if sock:
        sock.close()
        print("Connection closed")

if name == “main”:
print(“AMB82-Mini Communication Client”)
print(“-------------------------------”)
interactive_mode()