How does respeaker core v2 recognize a usb bluetooth dongle?

Hi,

Respeaker core v2 only show internal Bluetooth adapter when a USB Bluetooth dongle is plugged.



lsusb command shows the USB dongle as ‘Sennheiser Communications’.



respeaker@v2:~$ lsusb

Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 006 Device 002: ID 1395:002d Sennheiser Communications

Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub



However, hciconfig only shows the internal Bluetooth.



respeaker@v2:~$ hciconfig

hci0: Type: Primary Bus: UART

BD Address: 44:2C:05:84:7F:6E ACL MTU: 1021:8 SCO MTU: 64:1

DOWN

RX bytes:654 acl:0 sco:0 events:33 errors:0

TX bytes:419 acl:0 sco:0 commands:33 errors:0



How can I do for recognizing the USB Bluetooth dongle?



Best regards,

Nobuhiro Shinkai