Fix didn't import kp.

src/controllers/device_controller.py

@@ -9,7 +9,6 @@ from PyQt5.QtWidgets import QWidget, QListWidgetItem
 from PyQt5.QtGui import QPixmap, QIcon
 from PyQt5.QtCore import Qt
 import os
-import kp
 
 from src.services.device_service import check_available_device
 from src.config import UXUI_ASSETS, DongleModelMap, DongleIconMap, FW_DIR
@@ -245,6 +244,7 @@ class DeviceController:
                 return False
 
             # Connect to device
+            import kp
             print('[Connecting device]')
             self.device_group = kp.core.connect_devices(usb_port_ids=[usb_port_id])
             print(' - Connection successful')
@@ -279,6 +279,7 @@ class DeviceController:
         """
         if self.device_group:
             try:
+                import kp
                 print('[Disconnecting device]')
                 kp.core.disconnect_devices(device_group=self.device_group)
                 print(' - Disconnected')

src/services/device_service.py

@@ -5,7 +5,6 @@ This module provides device scanning functionality with timeout mechanism
 for detecting connected Kneron devices.
 """
 
-import kp
 import threading
 
 
@@ -22,12 +21,12 @@ class EmptyDescriptor:
         self.device_descriptor_list = []
 
 
-def check_available_device(timeout=0.5):
+def check_available_device(timeout=5.0):
     """
     Scan for available Kneron devices with timeout mechanism.
 
     Args:
-        timeout (float): Timeout in seconds (default 0.5).
+        timeout (float): Timeout in seconds (default 5.0).
 
     Returns:
         Device descriptor object containing found devices,
@@ -38,6 +37,7 @@ def check_available_device(timeout=0.5):
 
     def scan_devices():
         try:
+            import kp
             result[0] = kp.core.scan_devices()
         except Exception as e:
             error[0] = e