diff --git a/config.json b/config.json
index 53e2e13..37082e0 100644
--- a/config.json
+++ b/config.json
@@ -13,7 +13,7 @@
   "isBoard": false,
   "id": "makergen",
   "platform": ["win","mac","web","linux"],
-  "version": "0.0.1",
+  "version": "0.0.2",
   "asset": {
 	"python": {
 		"dir": "python/",
diff --git a/python/libraries/makergen/__pycache__/__init__.cpython-38.pyc b/python/libraries/makergen/__pycache__/__init__.cpython-38.pyc
new file mode 100644
index 0000000..8c362cb
Binary files /dev/null and b/python/libraries/makergen/__pycache__/__init__.cpython-38.pyc differ
diff --git a/python/libraries/makergen/__pycache__/core.cpython-38.pyc b/python/libraries/makergen/__pycache__/core.cpython-38.pyc
new file mode 100644
index 0000000..87248d1
Binary files /dev/null and b/python/libraries/makergen/__pycache__/core.cpython-38.pyc differ
diff --git a/python/libraries/makergen/core.py b/python/libraries/makergen/core.py
index 5b88bfd..c66898f 100644
--- a/python/libraries/makergen/core.py
+++ b/python/libraries/makergen/core.py
@@ -24,7 +24,7 @@ class Device:
         :param on_error_callback: 当遇到错误时的回调。接收一个参数，为错误对象；若遇到服务器或页面发送的消息不合规，传入ServerException对象
         :param base_url: makergen的基础URL，通常为wss://api.makergen.cn
         """
-        url = f"{base_url if base_url[-1] == '/' else base_url + "/"}ws/device/{device_id}?key={device_key}"
+        url = f"{base_url if base_url[-1] == '/' else base_url + '/'}ws/device/{device_id}?key={device_key}"
         print(url)
         self.ws = websocket.WebSocketApp(
             url,
@@ -36,11 +36,15 @@ class Device:
         self.on_msg_callback = on_msg_callback if on_msg_callback is not None else lambda _, __ : None
         self.on_error_callback = on_error_callback if on_error_callback is not None else lambda _ : None
         self.is_connected = False
+        self._connect_event = threading.Event()
 
     def _on_open(self, ws):
         self.is_connected = True
+        self._connect_event.set()
+
     def _on_close(self, ws, close_status_code, close_msg):
         self.is_connected = False
+        self._connect_event.clear()
 
     def _on_message(self, ws, message):
         try:
@@ -68,15 +72,13 @@ class Device:
         """
         在新线程中运行客户端循环（推荐）
         """
+        self._connect_event.clear()
         wst = threading.Thread(target=self.ws.run_forever)
         wst.daemon = True
         wst.start()
         start_time = time.time()
-        while not self.is_connected:
-            if time.time() - start_time > timeout:
-                if not self.is_connected:
-                    self.on_error_callback(TimeoutError(f"WebSocket connection timed out after {timeout} seconds"))
-            time.sleep(0.05)
+        if not self._connect_event.wait(timeout=timeout):
+            self.on_error_callback(TimeoutError(f"WebSocket connection timed out after {timeout} seconds"))
 
 def main_loop(self):
         """
diff --git a/python/main.ts b/python/main.ts
index b9cbf27..60560e0 100644
--- a/python/main.ts
+++ b/python/main.ts
@@ -11,8 +11,8 @@ namespace makergen{
         let id=parameter.ID.code;
         let key=parameter.KEY.code;
         let baseurl=parameter.BASEURL.code;
-        Generator.addImport(`\nimport makergen\nmakergen_device = makergen.Device(${id},${key},on_msg_callback=makergen_callback, base_url=${baseurl})\n`);
-        Generator.addCode(`makergen_device.connect()\n`);
+        Generator.addImport(`\nimport makergen\n`);
+        Generator.addCode(`makergen_device = makergen.Device(${id},${key},on_msg_callback=(makergen_callback if "makergen_callback" in dir() else None), base_url=${baseurl})\nmakergen_device.connect()\n`);
     }
 
     //% block="向数据点 [POINT] 发送数据 [VALUE]" blockType="command"
@@ -21,7 +21,7 @@ namespace makergen{
     export function send_msg(parameter: any, block: any) {
         let point=parameter.POINT.code;
         let value=parameter.VALUE.code;
-        Generator.addCode(`makergen_device.send_data(${point},str(${value}))\n`);
+        Generator.addCode(`makergen_device.send_data(${point},${value})\n`);
     }
 
     //% block="当接收到消息时" blockType="hat"