翊瑄: bluez learning

use ./bootstrap-configure to configure bluez
make to compile bluez
tools/hciconfig -a to list all controller
tools/hciconfig hci0 up to enable hci0 controller
tools/hcitools lescan to scan LE device
tools/hcitools lecc 00:18:..... to connect LE device

attrib/gatttool -i hci0 -b 00:18:... -m 48 --interactive
>connect
>primary
>characteristics 0x0001 0x000b
>char-desc 0x0001 0x000b
>char-read-uuid 2a06
>disconnect

monitor/btmon to monitor bluetooth messages in detail, one good way to debug
client/bluetoothctl could communicate with bluetoothd to send dbus message to control the connection
>remove 00:18:..... could remove the pairing information between bluetooth controller and device
>connect 00:18:.....
>disconnect

The pairing information is stored in /var/lib/bluetooth/00:26:19:**/00:18:*** after one successful connection. 00:26:19:** is mac address of bluetooth controller. 00:18:*** is the mac address of BLE device.
$ls /var/lib/bluetooth/00:26:19:**/00:18:***

attributes gatt info

$cat info

[LongTermKey]

Key=0x450BB7B3247459D8E27A65887DABC8E1

Authenticated=1

Master=1

EncSize=16

EDiv=53013

Rand=0x3F56CC125FD6E27A

[General]

Name=UJuicer Alert

SupportedTechnologies=LE

AddressType=public

Trusted=false

Blocked=false

Services=00001800-0000-1000-8000-00805f9b34fb;00001801-0000-1000-8000-00805f9b34fb;00001802-0000-1000-8000-00805f9b34fb;00001803-0000-1000-8000-00805f9b34fb;00001804-0000-1000-8000-00805f9b34fb;0000180a-0000-1000-8000-00805f9b34fb;0000180f-0000-1000-8000-00805f9b34fb;7aac6ac0-afca-11e1-9feb-0002a5d5c51b;

[DeviceID]

Source=1

Vendor=13

Product=0

Version=272

$cat attributes #these are attributes defined here
https://developer.bluetooth.org/gatt/services/Pages/ServicesHome.aspx

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