VIA Technologies VAB-820 - Setting up Bluetooth SPP Profile

VAB-820 Linux BSP v3.2.0 Quick Start Guide
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The default audio output setting for the VAB-820 is HDMI device.
To list all the available audio output devices, use the following command:
$ pactl list short sinks
0 alsa_output.platform-sound-hdmi.23.analog-stereo module-alsa-card.c s16le 2ch 48000Hz
SUSPENDED
1 alsa_output.platform-sound.22.analog-stereo module-alsa-card.c s16le 2ch 48000Hz
SUSPENDED
2 bluez_sink.00_1D_82_BC_C1_C4 module-bluez5-device.c s16le 2ch 48000Hz IDLE
From the output, we can see the following:
• 0 = HDMI device
• 1 = Line-out
• 2 = Bluetooth device
To set up the audio output to a Bluetooth device, use the following command:
$ pacmd set-default-sink 2
*Note
: If you would like to change audio output after enabling a Bluetooth device, use
the commands below:
To set up the audio output to Line-out, use the following command:
$ pacmd set-default-sink 1
To set up the audio output to HDMI device, use the following command:
$ pacmd set-default-sink 0
5.7.2.2. Setting Up Bluetooth SPP Profile
The VAB-820 supports SPP server mode and SPP client mode.
To enable the Bluetooth service, use the following command:
$ rfkill unblock bluetooth
$ hciconfig hci0 up
$ hciconfig hci0 piscan
$ /usr/lib/bluez5/bluetooth/bluetoothd -C -d &
Use the following commands to run the “bluetoothctl” to show the Bluetooth MAC
address and set up pairing mode for the
EMIO-2531 or EMIO-5531
module.
$ bluetoothctl
[NEW] Controller 5C:F3:70:24:4B:2E
[bluetooth]# scan on
Discovery started
[CHG] Controller 5C:F3:70:24:4B:2E Discovering: yes
[NEW] Device 5C:F3:70:25:DD:33 BlueZ 5.25
…
[bluetooth]# scan off
[bluetooth]# devices
Device 5C:F3:70:25:DD:33 BlueZ 5.25
Device …
[bluetooth]# pair 5C:F3:70:25:DD:33
[bluetooth]# trust 5C:F3:70:25:DD:33
[bluetooth]# quit