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Fedora 20 接 bluetooth鼠标

Bluetoothctl

Pairing a device from the shell is one of the most simplistic and reliable options. The exact procedure depends on the devices involved and their input functionality. What follows is a general outline of pairing a device using
/usr/bin/bluetoothctl:

人肉备份自此

Start the bluetoothctl interactive command. There one can input help to get a list of available commands.

  • Turn the power to the controller on by entering power on. It is off by default.
  • Enter devices to get the MAC Address of the device with which to pair.
  • Enter device discovery mode with scan on command if device is not yet on the list.
  • Turn the agent on with agent on.
  • Enter pair MAC Address to do the pairing (tab completion works).
  • If using a device without a PIN, one may need to manually trust the device before it can reconnect successfully. Enter trust MAC Address to do so.
  • Finally, use connect MAC_address to establish a connection.

An example session may look this way:

# bluetoothctl 
[NEW] Controller 00:10:20:30:40:50 pi [default]
[bluetooth]# agent KeyboardOnly 
Agent registered
[bluetooth]# default-agent 
Default agent request successful
[bluetooth]# scan on
Discovery started
[CHG] Controller 00:10:20:30:40:50 Discovering: yes
[NEW] Device 00:12:34:56:78:90 myLino
[CHG] Device 00:12:34:56:78:90 LegacyPairing: yes
[bluetooth]# pair 00:12:34:56:78:90
Attempting to pair with 00:12:34:56:78:90
[CHG] Device 00:12:34:56:78:90 Connected: yes
[CHG] Device 00:12:34:56:78:90 Connected: no
[CHG] Device 00:12:34:56:78:90 Connected: yes
Request PIN code
[agent] Enter PIN code: 1234
[CHG] Device 00:12:34:56:78:90 Paired: yes
Pairing successful
[CHG] Device 00:12:34:56:78:90 Connected: no

In order to have the device active after a reboot, a udev rule is needed: /etc/udev/rules.d/10-local.rules

# Set bluetooth power up
ACTION=="add", KERNEL=="hci0", RUN+="/usr/bin/hciconfig hci0 up"

After a suspend/resume-cycle, the device can be powered off automatically using something like this systemd service:

/etc/systemd/system/bluetooth-auto-power@.service

[Unit]
Description=Bluetooth auto power on
After=bluetooth.service sys-subsystem-bluetooth-devices-%i.device suspend.target

[Service]
Type=oneshot
#We could also do a 200 char long call to bluez via dbus. Except this does not work since bluez does not react to dbus at this point of the resume sequence and I do not know how I get this service to run at a time it does. So we just ignore bluez and force %i up using hciconfig. Welcome to the 21st century.
#ExecStart=/usr/bin/dbus-send --system --type=method_call --dest=org.bluez /org/bluez/%I org.freedesktop.DBus.Properties.Set string:org.bluez.Adapter1 string:Powered variant:boolean:true
ExecStart=/usr/bin/hciconfig %i up

[Install]
WantedBy=suspend.target
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