[英]Use Python and bleak library to notify a bluetooth GATT device, but the result is not stable
[英]Python's Bluetooth library of the Bleak report "bleak.exc.BleakError: Could not get GATT services: Unreachable" , how to solve it?
我是菜鸟,几天无所事事只好求助溢出(┬┬﹏┬┬)
Windows 10 下载一个 python 惨淡的第三方库 package 和conda的虚拟环境tf-gpu-3.7 本地安装吧。
使用 bleak 的示例文件: https://github.com/hbldh/bleak/blob/develop/examples/get_services.py
可以正常获取蓝牙服务特征值。 我将根据文档使用read_gatt_descriptor和read_gatt_char,突然报错Pycharm。 (此时我没有更改示例文件的代码)
错误:
C:\ProgramData\Anaconda3\envs\tf-gpu-3.7\python.exe C:/Users/Administrator/PycharmProjects/pythonProject/main.py
Traceback (most recent call last):
File "C:/Users/Administrator/PycharmProjects/pythonProject/main.py", line 27, in <module>
asyncio.run(main(sys.argv[1] if len(sys.argv) == 2 else ADDRESS))
File "C:\ProgramData\Anaconda3\envs\tf-gpu-3.7\lib\asyncio\runners.py", line 43, in run
return loop.run_until_complete(main)
File "C:\ProgramData\Anaconda3\envs\tf-gpu-3.7\lib\asyncio\base_events.py", line 587, in run_until_complete
return future.result()
File "C:/Users/Administrator/PycharmProjects/pythonProject/main.py", line 19, in main
async with BleakClient(address) as client:
File "C:\ProgramData\Anaconda3\envs\tf-gpu-3.7\lib\site-packages\bleak-0.15.0a1-py3.7.egg\bleak\backends\client.py", line 61, in __aenter__
await self.connect()
File "C:\ProgramData\Anaconda3\envs\tf-gpu-3.7\lib\site-packages\bleak-0.15.0a1-py3.7.egg\bleak\backends\winrt\client.py", line 276, in connect
await self.get_services()
File "C:\ProgramData\Anaconda3\envs\tf-gpu-3.7\lib\site-packages\bleak-0.15.0a1-py3.7.egg\bleak\backends\winrt\client.py", line 456, in get_services
"Could not get GATT services",
File "C:\ProgramData\Anaconda3\envs\tf-gpu-3.7\lib\site-packages\bleak-0.15.0a1-py3.7.egg\bleak\backends\winrt\client.py", line 105, in _ensure_success
raise BleakError(f"{fail_msg}: Unreachable")
bleak.exc.BleakError: Could not get GATT services: Unreachable
图片: https://tupian.li/images/2022/03/26/image4e67fd58c248b7b3.png
不知道怎么解决,报错太突然了。 前段时间还好,现在不行了。
我重新创建了虚拟环境,重新安装了bleak,不幸的是错误又重复了。
ESP32重启了几次,pyCharm又写了几次,但都报同样的错误。 前几天向作者求助,至今没有回复。。。
ESP32代码: https://github.com/hbldh/bleak/files/8348469/BLE.UART.txt
抓取的蓝牙数据包: https://github.com/hbldh/bleak/files/8348459/ERROR.txt
如何解决突发错误: Could not get GATT services: Unreachable
?
抱歉,目前尚不清楚我将在哪里描述错误...
问题结束了。 我找到了错误的原因:
ESP.restart();
我忘记评论esp.restart
function,导致ESP32一直重启。 因此无法获取蓝牙的服务。
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