fix & tool: enhancement for this integration

README.md

@@ -55,6 +55,30 @@ b. Linux terminal, use ``bluetoothctl`` in the terminal:
 Either with android app or with linux bluetoothctl, you should now able to poweron the projector without the remote.  
 [Here](https://github.com/manymuch/Xgimi-4-Home-Assistant/issues/5#issuecomment-1752887102) provides an alternative way to get the token without iOS or Android device.  
 
+#### A script tool for scanning BLE token
+this script is adapted from https://github.com/jack-webb/XBleet
+to use this script, you need to install dependency first
+```shell
+pip install bleak
+```
+
+and then 
+```shell
+python3 tool/scan.py
+```
+
+It will scan the bluetooth signals until you stop the script. And it only prints the result with manufacturer code == 0x46 (which is our target).
+A sample output looks like:
+```text
+Discovered BLE device(s):
+Discovered BLE device(s):
+Discovered BLE device(s):
+Discovered BLE device(s):
+Discovered BLE device(s):
+Device name: BLuetooth 4.0 RC, Address: 70:FD:88:CE:97:9E
+Manufacturer 0x46
+Data 0x5AC993202D314CFFFFFF3043524B544D
+```
 
 ### Choose a method to setup:  
 #### Method A: manual setup

custom_components/xgimi/pyxgimi.py

@@ -3,7 +3,7 @@
 from bluez_peripheral.util import get_message_bus
 from bluez_peripheral.advert import Advertisement
 from time import time
-
+import subprocess
 
 class XgimiApi:
     def __init__(self, ip, command_port, advance_port, alive_port, manufacturer_data) -> None:
@@ -65,13 +65,20 @@ async def async_fetch_data(self):
 
     async def async_check_alive(self):
         try:
-            _, writer = await asyncio.open_connection(
-                self.ip, self.alive_port)
-            writer.close()
-            await writer.wait_closed()
-            return True
-        except ConnectionRefusedError:
-            return False
+            # 使用 subprocess 模块执行 ping 命令
+            process = await asyncio.create_subprocess_shell(
+                f"ping -c 1 {self.ip}",  # -c 1 表示发送一次 ICMP 请求
+                stdout=subprocess.PIPE,
+                stderr=subprocess.PIPE
+            )
+
+            stdout, stderr = await process.communicate()
+
+            # 检查返回码来判断是否成功
+            if process.returncode == 0:
+                return True
+            else:
+                return False
         except Exception:
             return False
 

tools/scan.py

@@ -0,0 +1,31 @@
+import asyncio
+import bleak
+
+async def print_device_info(device):
+    manufacturer_data = device.metadata.get("manufacturer_data", {})
+    if manufacturer_data:
+        for manufacturer_code, data in manufacturer_data.items():
+            if manufacturer_code != 70:
+                continue
+            print(f"Device name: {device.name}, Address: {device.address}")
+            hex_code = format(manufacturer_code, '02X')
+            hex_data = ''.join(format(byte, '02X') for byte in data)
+            print(f"Manufacturer 0x{hex_code}\nData 0x{hex_data}")
+
+async def scan_for_ble_devices():
+    devices = await bleak.discover()
+    if devices:
+        print("Discovered BLE device(s):")
+        for device in devices:
+            await print_device_info(device)
+    else:
+        print("No BLE devices found nearby.")
+
+async def loop_scan():
+    while True:
+        await scan_for_ble_devices()
+
+if __name__ == "__main__":
+    loop = asyncio.get_event_loop()
+    loop.run_until_complete(loop_scan())
+    #loop.run_until_complete(scan_for_ble_devices())