[BlueZ] 1、Download install and use the BlueZ and hcitool on PI 3B+
星期日, 02. 九月 2018 11:58下午 - beautifulzzzz
1. Introduction
Bluez is the default Bluetooth protocol stack on Linux. It should be present and installed on your Linux distribution. If not, building and installing from source is not too difficult:
- Download the latest stable source release of Bluez from here. Unzip the compressed file you downloaded.
- Install the headers and libraries required for Bluez compilation:
2. Download And Install
I follow the blog (Installing Bluez 5.44 onto Raspbian?) to install bluez-5.50.
Download the most recent version from the official page:http://www.bluez.org/download/.
For example, at the time of writing it was 5.50, so I used(on my pi):
wget http://www.kernel.org/pub/linux/bluetooth/bluez-5.50.tar.xz
Then I extracted it and built it:
tar -xf bluez-5.50.tar.xz
cd bluez-5.50
**Read the README! **It lists the dependencies and the configure switches:
Install the dependencies first: (glib, dbus, libdbus, udev, etc.)
sudo apt install libdbus-1-dev libudev-dev libical-dev libreadline-dev
note: If you do not install the libdbus-1-dev, you will later get this strange error:
configure: error: D-Bus >= 1.6 is required
once you've installed dependencies, you can configure switches:
./configure --prefix=/usr --mandir=/usr/share/man --sysconfdir=/etc --localstatedir=/var --enable-experimental
then do:
make
sudo make install
It takes maybe 10 minutes to compile. After installing, you should find bluetoothd in /usr/libexec/bluetooth
. You should also see bluetoothd in /usr/lib/bluetooth
.
Go to each of these directories and type
./bluetoothd --version
You'll note that the one in libexec is new and the one in lib is old.
In order to make sure that d-bus is talking to you new BlueZ 5.50 and not your old BlueZ 5.43, you need to tell systemd to use the new bluetooth daemon:
sudo vim /lib/systemd/system/bluetooth.service
Make sure the exec.start
line points to your new daemon in /usr/libexec/bluetooth
.
For me, that wasn't enough. No matter what, upon restart I always got bluetoothd 5.43... So I just created a symlink from the old one to the new.
First rename the old file:
sudo mv /usr/lib/bluetooth/bluetoothd /usr/lib/bluetooth/bluetoothd-543.orig
Create the symlink:
sudo ln -s /usr/libexec/bluetooth/bluetoothd /usr/lib/bluetooth/bluetoothd
sudo systemctl daemon-reload
That should do it.
3. How to use the bluez and hcitool
3.1 setup bluetooth service
Start the bluetooth service and enable automatic startup, assuming you're using systemd as the init daemon:
sudo systemctl start bluetooth.service
sudo systemctl enable bluetooth.service
3.2 hcitool scan for bluetooth devices
Before start scanning make sure that your bluetooth device is turned on and not blocked, you can check that with the rfkill command:
sudo rfkill list
If the bluetooth device is blocked (soft or hard blocked), unblock it with the rfkill command again:
sudo rfkill unblock bluetooth
Bring up the bluetooth device with hciconfig command and start scanning, make sure the target device's bluetooth is on and It's discoverable:
sudo hciconfig hci0 up
hcitool scan
Wait few moment to complete the hcitool scan or hcitool lescan, the results will be something like bellow:
Here 00:1A:7D:DA:71:0A is the bluetooth MAC address and SHEN-PC is the name of the bluetooth device, i.e. an PC.
note: use hcitool lescan
will forever scan ble devices, if use ctrl+c stop it, it will show error(ref to LINKS 4 to solve):
hcitool lescan
Set scan parameters failed: Input/output error
3.3 bluetooth service discovery
Now we have the bluetooth MAC address of the target device, use the sdptool
command to know which services (like DUN, Handsfree audio) are available on that target device.
sdptool browse 28:ED:6A:A0:26:B7
You can also use the interactive bluetoothctl
tool for this purpose.
If the target device is present, you can ping it with l2ping command, requires root privilege:
➜ bluez-5.50 sudo l2ping 94:87:E0:B3:AC:6F
Ping: 94:87:E0:B3:AC:6F from B8:27:EB:8E:CC:51 (data size 44) ...
44 bytes from 94:87:E0:B3:AC:6F id 0 time 53.94ms
44 bytes from 94:87:E0:B3:AC:6F id 1 time 77.12ms
44 bytes from 94:87:E0:B3:AC:6F id 2 time 38.63ms
44 bytes from 94:87:E0:B3:AC:6F id 3 time 46.13ms
44 bytes from 94:87:E0:B3:AC:6F id 4 time 59.96ms
5 sent, 5 received, 0% loss
So, bluetooth service discovery is useful to determine the type of the device, like if it's a bluetooth mp3 player or it's a keyboard.
LINKS
- 1.Bluetooth on Modern Linux by Szymon Janc
- 2.dbus-python tutorial
- 3.Linux bluetooth setup with bluez and hcitool
- 4.hcitool lescan shows I/O error
@beautifulzzzz
智能硬件、物联网,热爱技术,关注产品
博客:http://blog.beautifulzzzz.com
园友交流群:414948975
[BlueZ] 1、Download install and use the BlueZ and hcitool on PI 3B+的更多相关文章
- [BlueZ] 2、使用bluetoothctl搜索、连接、配对、读写、使能notify蓝牙低功耗设备
星期三, 05. 九月 2018 02:03上午 - beautifulzzzz 1.前言 上一篇讲了如何编译安装BlueZ-5,本篇主要在于玩BlueZ,用命令行去操作BLE设备: [BlueZ] ...
- [BlueZ] 3、使用 meshctl 连接控制一个 sig mesh 灯
目录 前言 1.准备工作 2.meshctl 连接.配置.控制 sig mesh 灯 3.最终效果: LINKS 前言 本文介绍如何使用 meshctl 配对.连接.控制一个 sig mesh 球泡灯 ...
- Linux随笔之——./configure、make、make install(转)
原文连接:http://www.linuxidc.com/Linux/2011-02/32211.htm 这些都是典型的使用GNU的AUTOCONF和AUTOMAKE产生的程序的安装步骤. ./con ...
- ./configure、make、make install
这些都是典型的使用GNU的AUTOCONF和AUTOMAKE产生的程序的安装步骤 一.基本信息 1../configure 是用来检测你的安装平台的目标特征的.比如它会检测你是不是有CC或GCC,并不 ...
- package.json和npm install、cnpm install 的問題
問題:最近使用cnpm安装项目依赖后,运行项目出现样式错乱问题. 描述:最近项目开发,需求参插了很多个版本,所以在前端项目的主干上拉好几套分支代码.拉的分支并不会把node_modules也拉过去,所 ...
- Linux 命令详解(三)./configure、make、make install 命令
这些都是典型的使用GNU的AUTOCONF和AUTOMAKE产生的程序的安装步骤 一.基本信息 1../configure 是用来检测你的安装平台的目标特征的.比如它会检测你是不是有CC或GCC,并不 ...
- 转:eclipse maven build、maven install 等区别
原文地址:eclipse maven build.maven install 等区别
- eclipse中的maven build、maven clean、maven install和maven test的区别
eclipse中的maven build.maven clean.maven install和maven test的区别 https://www.cnblogs.com/Marydon20170307 ...
- Linux中./configure、make、make install详解
./configure && make && make install详解 2010-08-03 23:30:05 标签:休闲 ./configure &&a ...
随机推荐
- 学习 razor pages 指南
这是一个系列,我打算把此人的系列翻译一下,学习技术的同时,顺便提高一下英文水平. 原文地址:https://www.learnrazorpages.com/ 前言 欢迎来学习 razor pages ...
- 如何在html显示当前时间
下边那个是一直快速跳转的 <!doctype html> <html> <head> <meta charset="utf-8"&g ...
- 初识C语言(五)
自定义函数 C语言提供了大量的库函数(右侧资料下载中有),比如stdio.h提供输出函数,但是还是满足不了我们开发中的一些逻辑,所以这个时候需要自己定义函数,自定义函数的一般形式: 注意: 1.[]包 ...
- 记录一次go性能调试的过程
安装 go, git, go-torch 备注, go1.11后, 集成了 go-torch
- Jmeter 后置处理器JSON Extractor 提取json的多个值
- js实现回到顶部操作
<a href="javascript:;" id="btn" title="回到顶部"></a> 样式: #btn ...
- docker 安装 hbase安装 java连接hbase (mac环境)
docker 安装 https://hub.docker.com/editions/community/docker-ce-desktop-mac 下载地址 下载完之后,安装app一样安装就好 安装完 ...
- 今天分享三种方法实现Linux系统调用,感兴趣的朋友可以参考一下
系统调用(System Call)是操作系统为在用户态运行的进程与硬件设备(如CPU.磁盘.打印机等)进行交互提供的一组接口.当用户进程需要发生系统调用时,CPU 通过软中断切换到内核态开始执行内核系 ...
- 日常报错记录4:ssh工程复制粘贴顺序。
今天要复制一个项目. 久久不能如愿. web.xml里面老是有红的,比如applicationContext.xml字段. 它应该是web.xml要找它,于是,我先把applicationContex ...
- AnjularJs教程
原文地址:https://www.angular.cn/guide/quickstart#step-1-install-the-angular-cli