Linux的蓝牙信号强度l2ping（无连接？） [英] Linux Bluetooth l2ping with signal strength (without connecting?)

问题描述

有关在这里任何Linux的BlueZ / BT专家：

For any Linux BlueZ/BT experts here:

我正在寻找一种方式来平之称BT设备（即BDADDR），如果他们是在范围我想知道近似的信号强度。

I'm looking for a way to "ping" known BT devices (known BDADDR) and if they are in range I'd like to know the approximate signal strength.

我知道我可以先运行l2ping，然后建立与设备的连接，最后检查RSSI和链路质量，如果连接工作没有第一配对。

I know that I could first run l2ping, then establish a connection to the device and finally check the rssi or link quality if the connection worked without pairing first.

不过我要找的是获得的信号强度没有连接到该设备首先的一种方式。完美的将是从l2ping应答数据包的信号强度测量，但我不知道这是否是信息可在所有沿堆栈传递。

However what I'm looking for is a way of getting the signal strength without connecting to the device first. Perfect would be a signal strength measurement from the l2ping reply packet, but I don't know if that info is available at all and passed along the stack.

推荐答案

您可以查询扫描过程中获得的RSSI，无需连接到设备。下面是使用pybluez一个例子。您也可以直接在Linux上使用配合bluez c执行同样的事情。

You can obtain RSSI during inquiry scan, without connecting to devices. Here's an example using pybluez. You could also do the same thing directly from C using Bluez on linux.

查询-with-rssi.py

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