fix: upgrade_root NONE bug

Author: ymj-123

src/aceinna/bootstrap/web.py

@@ -380,6 +380,7 @@ def listen(self):
         '''
         Start to find device
         '''
+        print("Python driver version: {0}".format(VERSION))
         # start websocket server
         webserver_thread = threading.Thread(target=self.start_webserver)
         webserver_thread.start()

src/aceinna/devices/base/uart_base.py

@@ -280,18 +280,17 @@ def thread_do_upgrade_framework(self, file):
 
     def _do_download_firmware(self, file):
         upgarde_root = os.path.join(resource.get_executor_path(), 'upgrade')
+
+        firmware_content = None
+        if not os.path.exists(upgarde_root):
+            os.makedirs(upgarde_root)
 
         del_list = os.listdir(upgarde_root)
         for f in del_list:
             file_path = os.path.join(upgarde_root, f)
             if os.path.isfile(file_path):
                 os.remove(file_path)
 
-        firmware_content = None
-
-        if not os.path.exists(upgarde_root):
-            os.makedirs(upgarde_root)
-
         firmware_file_path = os.path.join(upgarde_root, file)
         firmware_file = Path(firmware_file_path)