比之於
《W!o+ 的《小伶鼬工坊演義》︰樹莓派 3 三兩事之藍牙篇【上】》
文本寫作那時，現下的 pi-bluetooth
pi@raspberrypi:~apt-cache show bluez Package: bluez Version: 5.43-2+rpt2+deb9u2 Architecture: armhf Maintainer: Debian Bluetooth Maintainers <pkg-bluetooth-maintainers@lists.alioth.debian.org>
pi@raspberrypi:~
![systemctl status bluetooth ● bluetooth.service - Bluetooth service Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled) Active: active (running) since Wed 2017-11-15 16:30:27 CST; 20s ago Docs: man:bluetoothd(8) Main PID: 500 (bluetoothd) Status: "Running" CGroup: /system.slice/bluetooth.service └─500 /usr/lib/bluetooth/bluetoothd 11月 15 16:30:26 raspberrypi systemd[1]: Starting Bluetooth service... 11月 15 16:30:27 raspberrypi bluetoothd[500]: Bluetooth daemon 5.43 11月 15 16:30:27 raspberrypi systemd[1]: Started Bluetooth service. 11月 15 16:30:27 raspberrypi bluetoothd[500]: Starting SDP server 11月 15 16:30:27 raspberrypi bluetoothd[500]: Bluetooth management interface 1.14 initialized 11月 15 16:30:27 raspberrypi bluetoothd[500]: Failed to obtain handles for "Service Changed" characteristic 11月 15 16:30:27 raspberrypi bluetoothd[500]: Sap driver initialization failed. 11月 15 16:30:27 raspberrypi bluetoothd[500]: sap-server: Operation not permitted (1) 11月 15 16:30:27 raspberrypi bluetoothd[500]: Endpoint registered: sender=:1.5 path=/MediaEndpoint/A2DPSource 11月 15 16:30:28 raspberrypi bluetoothd[500]: Endpoint registered: sender=:1.5 path=/MediaEndpoint/A2DPSink pi@raspberrypi:~](http://www.freesandal.org/wp-content/ql-cache/quicklatex.com-86560bf094fcf9128881477984f15489_l3.png "Rendered by QuickLaTeX.com")
不過要是已批配且信賴之藍牙鍵盤與或滑鼠，不能重啟後容易主動連接︰
pi@raspberrypi:~![bluetoothctl [NEW] Controller B8:27:EB:68:1A:C4 raspberrypi [default] [NEW] Device F1:A3:00:00:60:1D Bluetooth 3.0 Keyboard [bluetooth]# power on Changing power on succeeded [bluetooth]# agent on Agent registered [bluetooth]# default-agent Default agent request successful [bluetooth]# list Controller B8:27:EB:68:1A:C4 raspberrypi [default] [bluetooth]# devices Device F1:A3:00:00:60:1D Bluetooth 3.0 Keyboard [bluetooth]# info F1:A3:00:00:60:1D Device F1:A3:00:00:60:1D Name: Bluetooth 3.0 Keyboard Alias: Bluetooth 3.0 Keyboard Class: 0x002540 Icon: input-keyboard Paired: yes Trusted: yes Blocked: no Connected: no LegacyPairing: no UUID: Human Interface Device... (00001124-0000-1000-8000-00805f9b34fb) UUID: PnP Information (00001200-0000-1000-8000-00805f9b34fb) Modalias: usb:v04E8p7021d011B [CHG] Device F1:A3:00:00:60:1D Connected: yes [CHG] Device F1:A3:00:00:60:1D Connected: no [bluetooth]# connect F1:A3:00:00:60:1D Attempting to connect to F1:A3:00:00:60:1D [CHG] Device F1:A3:00:00:60:1D Connected: yes Connection successful [CHG] Device F1:A3:00:00:60:1D ServicesResolved: yes [Bluetooth 3.0 Keyboard]# quit Agent unregistered [DEL] Controller B8:27:EB:68:1A:C4 raspberrypi [default] pi@raspberrypi:~](http://www.freesandal.org/wp-content/ql-cache/quicklatex.com-e3c0e09881422d6b9ba87965d740a1fe_l3.png "Rendered by QuickLaTeX.com")
實用上，豈非枉然耶？？無怪乎早有『按時輪詢』之議也！！
Connect Bluetooth Keyboard at boot
I am trying to configure the bluetooth on the RPi3 to automatically connect to my BT keyboard when it boots up, but am unable to get it to work. Currently I am using Raspbian and it boots to the login screen via GUI. Would anyone be able to help me out on how to configure it so it connects at bootup? The device is trusted via bluetoothctl and I can connect to it fine once I am logged in and I connect it manually.