Notes Bluetooth HCI BlueZ

# lsusb |egrep -i bluetooth
Bus 002 Device 002: ID 1131:1001 Integrated System Solution Corp. KY-BT100 Bluetooth Adapter
# rfkill list
0: asus-wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
# hcitool dev
Devices:
hci0	00:11:67:81:EC:EF

hciconfig -a

# bluetoothctl
[bluetooth]# devices
Device C0:C9:76:C3:A7:92 SUNNY

hcitool inq hcitool scan