From Evernote:

全Linux生活：第7天 - Bluetooth & bluez

藍牙滑鼠終於可以用了！其實第2天的時候就已經把藍牙滑鼠與電腦配對，只是當時配對時沒有弄好，導致清單雖然可以看到滑鼠，但是不能使用，最慘的是想移除也移除不了，不知哪裡出了錯？後來因為太忙就先放著不管了。今天想說應該要來處理一下這個問題了。於是用dpkg看了一下ubuntu的到底是使用什麼藍牙套件：

     $ dpkg --get-selections|grep blue

     bluez                        install
     bluez-alsa                   install
     bluez-cups                   install
     bluez-gstreamer              install
     gnome-bluetooth              install
     libbluetooth3                install
     libgnome-bluetooth8          install
     pulseaudio-module-bluetooth  install

看起來應該是bluez，接下來看看有什麼線索可以下手：

     $ dpkg -L bluez|grep /bin/

     /usr/bin/bluetooth-agent
     /usr/bin/bluez-simple-agent
     /usr/bin/bluez-simple-service
     /usr/bin/bluez-test-adapter
     /usr/bin/bluez-test-audio
     /usr/bin/bluez-test-device
     /usr/bin/bluez-test-discovery
     /usr/bin/bluez-test-input
     /usr/bin/bluez-test-manager
     /usr/bin/bluez-test-network
     /usr/bin/bluez-test-serial
     /usr/bin/bluez-test-service
     /usr/bin/bluez-test-telephony
     /usr/bin/ciptool
     /usr/bin/dfutool
     /usr/bin/hcitool
     /usr/bin/l2ping
     /usr/bin/l2test
     /usr/bin/rctest
     /usr/bin/rfcomm
     /usr/bin/sdptool

在經過一陣亂猜跟亂試的過程後，發現hcitool這個東西比較有搞頭，看一下它有哪些參數可以用：

     $ hcitool --help
     hcitool - HCI Tool ver 4.91
     Usage:
         hcitool [options] <command> [command parameters]
     Options:
         --help    Display help
         -i dev    HCI device
     Commands:
         dev     Display local devices
         inq     Inquire remote devices
         scan    Scan for remote devices
         name    Get name from remote device
         info    Get information from remote device
         spinq    Start periodic inquiry
         epinq    Exit periodic inquiry
         cmd     Submit arbitrary HCI commands
         con     Display active connections
         cc      Create connection to remote device
         dc      Disconnect from remote device
         sr      Switch master/slave role
         cpt     Change connection packet type
         rssi    Display connection RSSI
         lq      Display link quality
         tpl     Display transmit power level
         afh     Display AFH channel map
         lp      Set/display link policy settings
         lst     Set/display link supervision timeout
         auth    Request authentication
         enc     Set connection encryption
         key     Change connection link key
         clkoff    Read clock offset
         clock    Read local or remote clock
         lescan    Start LE scan
         lewladd    Add device to LE White List
         lewlrm    Remove device from LE White List
         lewlsz    Read size of LE White List
         lewlclr    Clear LE White list
         lecc    Create a LE Connection
         ledc    Disconnect a LE Connection
         lecup    LE Connection Update
    
     For more information on the usage of each command use:
         hcitool <command> --help

又經過一陣亂試之後，發現以下結論：

     掃描藍牙裝置可以用：

     $ hcitool scan

     Scanning ...
         00:07:61:FC:C2:B9    Logitech Bluetooth Mouse M555b

     取得藍牙裝置名稱：

     $ hcitool name 00:07:61:FC:C2:B9

     Logitech Bluetooth Mouse M555b

     取得藍牙裝置資訊：

     $ sudo hcitool info 00:07:61:FC:C2:B9
     [sudo] password for rudy:
     Requesting information ...
         BD Address:  00:07:61:FC:C2:B9
         Device Name: Logitech Bluetooth Mouse M555b
         LMP Version: 2.0 (0x3) LMP Subversion: 0x229
         Manufacturer: Broadcom Corporation (15)
         Features: 0xbc 0x02 0x04 0x38 0x08 0x00 0x00 0x00
             <encryption> <slot offset> <timing accuracy> <role switch>
             <sniff mode> <RSSI> <power control> <enhanced iscan>
             <interlaced iscan> <interlaced pscan> <AFH cap. slave>

     裝置配對：

     $ bluez-simple-agent hci0 00:07:61:FC:C2:B9

     設定信任關係：

     $ bluez-test-device trusted 00:07:61:FC:C2:B9 yes

     連線藍牙滑鼠：

     $ bluez-test-input connect 00:07:61:FC:C2:B9

這樣就ok了！以上步驟跟直接使用gnome-bluetooth的GUI介面設定結果相同，且設定結果也會反應在GUI介面上，看起來gnome-bluetooth內部也是使用bluez套件作為底層的指令。