fix wifi 2 pkg issue

wifi.py

@@ -116,6 +116,20 @@ class WiFiManager:
     
     # ==================== WiFi 连接方法 ====================
     
+    def is_sta_associated(self):
+        """
+        是否作为 STA 已关联到上游 AP（用于与 AP 模式区分：AP 模式下 wlan0 可能有 IP 但 iw link 为 Not connected）。
+        """
+        try:
+            out = os.popen("iw dev wlan0 link 2>/dev/null").read()
+            if not out.strip():
+                return False
+            if "Not connected" in out:
+                return False
+            return "Connected to" in out
+        except Exception:
+            return False
+
     def is_wifi_connected(self):
         """检查WiFi是否已连接"""
         # 优先用 MaixPy network（如果可用）
@@ -271,7 +285,67 @@ class WiFiManager:
             self._wifi_ip = None
             self.logger.error(f"[WIFI] 连接/验证失败，已回滚: {e}")
             return None, str(e)
-    
+
+    def persist_sta_credentials(self, ssid: str, password: str, restart_service: bool = True):
+        """
+        仅写入 STA 凭证（/etc/wpa_supplicant.conf + /boot/wifi.ssid|pass），
+        可选是否立即 /etc/init.d/S30wifi restart。
+        不做可达性验证。用于热点配网页提交后切换到连接指定路由器。
+        password 为空时按开放网络（key_mgmt=NONE）写入。
+        Returns:
+            (ok: bool, err_msg: str)
+        """
+        ssid = (ssid or "").strip()
+        password = (password or "").strip()
+        if not ssid:
+            return False, "SSID 为空"
+
+        conf_path = "/etc/wpa_supplicant.conf"
+        ssid_file = "/boot/wifi.ssid"
+        pass_file = "/boot/wifi.pass"
+
+        def _write_text(path: str, content: str):
+            with open(path, "w", encoding="utf-8") as f:
+                f.write(content)
+
+        try:
+            if password:
+                net_conf = os.popen(f'wpa_passphrase "{ssid}" "{password}"').read()
+                if "network={" not in net_conf:
+                    return False, "wpa_passphrase 失败"
+            else:
+                esc = ssid.replace("\\", "\\\\").replace('"', '\\"')
+                net_conf = (
+                    "network={\n"
+                    f'    ssid="{esc}"\n'
+                    "    key_mgmt=NONE\n"
+                    "}\n"
+                )
+            _write_text(
+                conf_path,
+                "ctrl_interface=/var/run/wpa_supplicant\n"
+                "update_config=1\n\n"
+                + net_conf,
+            )
+        except Exception as e:
+            return False, str(e)
+
+        try:
+            _write_text(ssid_file, ssid)
+            _write_text(pass_file, password)
+        except Exception as e:
+            return False, str(e)
+
+        if restart_service:
+            try:
+                os.system("/etc/init.d/S30wifi restart")
+            except Exception as e:
+                return False, str(e)
+            self.logger.info(f"[WIFI] persist_sta_credentials: 已写入并重启 S30wifi, ssid={ssid!r}")
+        else:
+            self.logger.info(f"[WIFI] persist_sta_credentials: 已写入凭证（未重启 S30wifi）, ssid={ssid!r}")
+        return True, ""
+
     def disconnect_wifi(self):
         """断开WiFi连接并清理资源"""
         if self._wifi_socket: