查看“蓝牙音频”的源代码

== 使用蓝牙音箱 ==
Goal is to use a bluetooth (BT) speaker to let domoticz talk. This setup should also be usable for music purposes, which is the first step to take.
I used a 'Mini-X6U' speaker and a brandless usb BT stick

Use [http://www.domoticz.com/forum/viewtopic.php?f=28&t=7563 this forum topic] for support

=== 安装蓝牙支持 ===
升级系统
<syntaxhighlight lang="bash">
sudo apt-get update
sudo apt-get upgrade
</syntaxhighlight>

列出已连接的usb设备 ('''without''' BT audio stick connected)
<syntaxhighlight lang="bash">
lsusb
</syntaxhighlight>
Insert BT USB stick
<syntaxhighlight lang="bash">
lsusb
</syntaxhighlight>
When you compare this to the previous 'lsusb' output you should see your bluetooth stick (mine is 'Bus 001 Device 006: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)')

Install needed packages for bluetooth support (required 156 mb on my system and took 5 minutes on Pi2 and approx. 20 minutes on PiB)
<syntaxhighlight lang="bash">
sudo apt-get install bluetooth bluez bluez-utils bluez-alsa
</syntaxhighlight>
(this also installs printer support etc.)

Set user rights for bluetooth
<syntaxhighlight lang="bash">
sudo usermod -a -G lp root
</syntaxhighlight>
(root might not be needed....)
<syntaxhighlight lang="bash">
sudo usermod -a -G lp pi
</syntaxhighlight>


Edit the bluetooth audio configuration
sudo nano /etc/bluetooth/audio.conf
Find the [General] section and locate the following:
<syntaxhighlight lang="bash">
# If we want to disable support for specific services
# Defaults to supporting all implemented services
#Disable=Control,Source
</syntaxhighlight>

Change to:
<syntaxhighlight lang="bash">
# If we want to disable support for specific services
# Defaults to supporting all implemented services
#Disable=Control,Source
Enable=Source,Sink,Socket
Disable=Media
</syntaxhighlight>

reboot the system
(from domoticz or 'sudo reboot')

=== Pair bluetooth speaker and enable audio ===
(First try without the next step, it was in the instructions I used, but does not seem to be needed, please remove from this instruction when not needed)
'sudo hciconfig hci0 up'

Enable your bluetooth speaker (power-on) and find the speaker
<syntaxhighlight lang="bash">
hcitool scan
</syntaxhighlight>
my result:
<syntaxhighlight lang="bash">
Scanning ...
        30:22:10:00:52:5C       Mini-X6U
</syntaxhighlight>

Start pairing (use your mac address, and your device pincode (in my case 0000 )
<syntaxhighlight lang="bash">
bluetooth-agent --adapter hci0 0000 30:22:10:00:52:5C
</syntaxhighlight>
resulting in "Agent has been released"
<syntaxhighlight lang="bash">
bluetooth-agent hci0  30:22:10:00:52:5C
</syntaxhighlight>

Trust the device for future use
<syntaxhighlight lang="bash">
bluez-test-device trusted 30:22:10:00:52:5C yes
</syntaxhighlight>

Check the trust:
<syntaxhighlight lang="bash">
bluez-test-device trusted 30:22:10:00:52:5C 
</syntaxhighlight>
when this returns 1 everything is ok

Create the audio settings file (this file is needed for every user):
nano ~/.asoundrc

<syntaxhighlight lang="bash">
pcm.bluetooth {
        type bluetooth
        device 30:22:10:00:52:5C # change this MAC address to your speakers address
        profile "auto"
}
</syntaxhighlight>

Restart the bluetooth engine
<syntaxhighlight lang="bash">
sudo /etc/init.d/bluetooth restart
</syntaxhighlight>


=== Install mediaplayer ===
Install mplayer (64mb, 1 or 2 minutes on Pi2)
<syntaxhighlight lang="bash">
sudo apt-get install mplayer
</syntaxhighlight>

edit the mplayer configuration file to prevent loading lyrics (which is not needed and reports errors on my machine
sudo nano /etc/mplayer/mplayer.conf and add (top top) 
<syntaxhighlight lang="bash">
nolirc=yes
</syntaxhighlight>

=== Play MP3 using mediaplayer ===
<syntaxhighlight lang="bash">
mplayer -ao alsa:device=bluetooth /media/networkshare/BackupPI/TOOL_FORTY_SIX_2_DRUM_COVER_BY_MEYTAL_COHEN.mp3 -softvol -volume 10 -af resample=22100:0:0
</syntaxhighlight>
This command executes the mplayer, changes output to bluetooth, used the mp3 file specified, specifies to use sofware controlled volume control, sets volume to 10 (=10%) and resamples to avoid filling the buffer


=== Use from within domoticz ===
This chapter is still empty


[[Category:Domoticz]]
[[Category:设置]]
[[Category:硬件]]
[[Category:媒体]]
[[Category:音频]]
[[Category:蓝牙]]
[[Category:脚本]]
[[Category:Bash]]
[[Category:树莓派]]