bluetooth [JZ Wiki]

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====== required software ======
<code>
yaourt -S btscanner
pacman -S bluez-utils
</code>

====== discoverable ======
<code>
dbus-send --system --dest=org.bluez /org/bluez/hci0 org.bluez.Adapter.SetMode string:discoverable
hciconfig hci0 piscan
</code>

====== hide ======
<code>
dbus-send --system --dest=org.bluez /org/bluez/hci0 org.bluez.Adapter.SetMode string:off
hciconfig hci0 noscan
</code>

====== scan ======
<code>
hciconfig
hciconfig hci0 up
hcitool scan
l2ping MAC
btscanner
</code>

<code>
sudo bluetoothctl
agent on
default-agent
pair MAC
connect MAC
</code>

TODO:

兩種 scan 的差別
ble compatibility

====== RSSI ======
<code>
hcitool rssi AA:BB:CC:DD:EE:FF
</code>


===== Beacon =====
Advertised speed
<code>
sudo hciconfig hci0 up
sudo hcitool -i hci0 cmd 0x08 0x0008 1e 02 01 1a 1a ff 4c 00 02 15 e2 c5 6d b5 df fb 48 d2 b0 60 d0 f5 a7 10 96 e0 00 00 00 00 c5 00 00 00 00 00 00 00 00 00 00 00 00 00
sudo hcitool -i hci0 cmd 0x08 0x0006 A0 00 A0 00 03 00 00 00 00 00 00 00 00 07 00
sudo hcitool -i hci0 cmd 0x08 0x000a 01
</code>

參考
  * https://wiki.debian.org/BluetoothUser
  * http://shyuanliang.blogspot.tw/2014_10_01_archive.html
  * https://github.com/karulis/pybluez
  * https://github.com/MS3FGX/Bluelog
  * https://www.cnet.com/how-to/how-to-setup-bluetooth-on-a-raspberry-pi-3/
  * http://ops9.blogspot.tw/2013/09/inquiry-scan.html