1 前言

一个问题，一篇文章，一出故事。
笔者最近希望通过命令行控制蓝牙设备，于是整理此章节。

2 最佳实践

2.1 命令的基本使用

2.1.1 进入蓝牙工具CLI界面

bluetoothctl

可见如下显示，

Agent registered
[CHG] Controller 2C:33:58:50:C3:77 Pairable: yes
[bluetooth]# 

2.1.2 获取命令行帮助

[bluetooth]# help

可见如下显示，

Menu main:
Available commands:
-------------------
advertise                                         Advertise Options Submenu
scan                                              Scan Options Submenu
gatt                                              Generic Attribute Submenu
list                                              List available controllers
show [ctrl]                                       Controller information
select                                            Select default controller
devices                                           List available devices
paired-devices                                    List paired devices
system-alias                                      Set controller alias
reset-alias                                       Reset controller alias
power                                             Set controller power
pairable                                          Set controller pairable mode
discoverable                                      Set controller discoverable mode
discoverable-timeout [value]                      Set discoverable timeout
agent                                             Enable/disable agent with given capability
default-agent                                     Set agent as the default one
advertise                                         Enable/disable advertising with given type
set-alias                                         Set device alias
scan                                              Scan for devices
info [dev]                                        Device information
pair [dev]                                        Pair with device
cancel-pairing [dev]                              Cancel pairing with device
trust [dev]                                       Trust device
untrust [dev]                                     Untrust device
block [dev]                                       Block device
unblock [dev]                                     Unblock device
remove                                            Remove device
connect                                           Connect device
disconnect [dev]                                  Disconnect device
menu                                              Select submenu
version                                           Display version
quit                                              Quit program
exit                                              Quit program
help                                              Display help about this program
export                                            Print environment variables

2.2 打开蓝牙设备

[bluetooth]# power on

如果需要相反的操作，请执行以下命令，

[bluetooth]# power off

2.3 扫描蓝牙设备

[bluetooth]# scan on

假设发现如下设备，

Discovery started
#...
[NEW] Device 1C:52:16:7A:52:BD QCY-HT03
#...

如果需要相反的操作，请执行以下命令，

[bluetooth]# scan off

2.4 配对蓝牙设备

[bluetooth]# pair 1C:52:16:7A:52:BD

2.5 连接蓝牙设备

[bluetooth]# onnect 1C:52:16:7A:52:BD

如果没有预先配对，会提示执行配对，你可以使用如下命令列出可用的设备，

[QCY-HT03]# devices

或者也可以使用如下命令显示已配对设备，

[QCY-HT03]# paired-devices

可见如下输出，

Device 1C:52:16:7A:52:BD QCY-HT03

另外，如果需要反向操作，请使用如下命令，

[QCY-HT03]# disconnect 1C:52:16:7A:52:BD

以上只是暂时断开，如果需要删除设备，请使用如下命令，

[QCY-HT03]# remove 1C:52:16:7A:52:BD

参阅文档
=============
https://www.dianjilingqu.com/567521.html