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Raspberry PiにBluetooth機器を接続する

Last updated at Posted at 2020-07-24

#Raspberry PiでBluetoothを扱う

備忘録メモです。

Raspberry PiはBluetoothが扱えます。
ちょっと試してみました。

参考:
https://qiita.com/shskwmt/items/fffabf521201f5835214
https://qiita.com/katsuyoshi/items/9d5417495a47c4b15ac1
https://qiita.com/propella/items/6daf3c56e26f709b4141
https://qiita.com/sunaga70/items/89e2d1eecfd73d3fef21

Bluetoothをスキャンする

Bluetoothctl コマンドを利用します。
rootユーザで実行するため、sudo付きです。
プロンプトが[bluetooth]# に変わります。

pi@raspberrypi:~ $ sudo bluetoothctl
Agent registered
[bluetooth]#

スキャンしてみます。
scan onコマンドです。

[bluetooth]# scan on
Discovery started

デバイスが見つかると、ズラズラっと流れてきます。
試しに、SONYのワイヤレスイヤホンを電源ONしてみました。
デバイスが見つかりました。
(MACアドレスはマスクしています)

[NEW] Device AA:BB:CC:AA:BB:CC LE_WI-C600N

スキャンを止めるには、scan offコマンドです。

[bluetooth]# scan off
Discovery stopped

Bluethoothの情報を見る

info <デバイスのMACアドレス> を実行します
(UUIDはマスクしています)

[bluetooth]# info AA:BB:CC:AA:BB:CC
Device CC:98:8B:E1:A5:0D (public)
        Name: LE_WI-C600N
        Alias: LE_WI-C600N
        Paired: no
        Trusted: no
        Blocked: no
        Connected: no
        LegacyPairing: no
        UUID: Unknown                   (0000aabb-0000-0000-0000-001020304050)

利用可能デバイスの一覧

devices コマンドを実行します

[bluetooth]# devices
Device AA:BB:CC:AA:BB:CC WI-C600N

ペアリングする

pair <デバイスのMACアドレス> コマンドを実行します

[bluetooth]# pair AA:BB:CC:AA:BB:CC
Attempting to pair with AA:BB:CC:AA:BB:CC
[CHG] Device AA:BB:CC:AA:BB:CC Connected: yes
[CHG] Device AA:BB:CC:AA:BB:CC Paired: yes
Pairing successful

ペアリング済デバイスを見る

paired-devices コマンドを実行します

[bluetooth]# paired-devices
Device AA:BB:CC:AA:BB:CC WI-C600N

デバイスを削除する

remove <デバイスのMACアドレス> コマンドを実行します

[bluetooth]# remove AA:BB:CC:AA:BB:CC
[DEL] Device AA:BB:CC:AA:BB:CC WI-C600N
Device has been removed

bluetoothプロンプトから抜ける

quit コマンドを実行します

[bluetooth]# quit
pi@raspberrypi:~ $

ヘルプを見る

help コマンドを実行します

[bluetooth]# help
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 <ctrl>                                     Select default controller
devices                                           List available devices
paired-devices                                    List paired devices
system-alias <name>                               Set controller alias
reset-alias                                       Reset controller alias
power <on/off>                                    Set controller power
pairable <on/off>                                 Set controller pairable mode
discoverable <on/off>                             Set controller discoverable mode
agent <on/off/capability>                         Enable/disable agent with given capability
default-agent                                     Set agent as the default one
advertise <on/off/type>                           Enable/disable advertising with given type
set-alias <alias>                                 Set device alias
scan <on/off>                                     Scan for devices
info [dev]                                        Device information
pair [dev]                                        Pair with device
trust [dev]                                       Trust device
untrust [dev]                                     Untrust device
block [dev]                                       Block device
unblock [dev]                                     Unblock device
remove <dev>                                      Remove device
connect <dev>                                     Connect device
disconnect [dev]                                  Disconnect device
menu <name>                                       Select submenu
version                                           Display version
quit                                              Quit program
exit                                              Quit program
help                                              Display help about this program
export                                            Print evironment variables
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