Bluetooth headset

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== Edit /etc/bluetooth/audio.conf ===
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This is mostly based on [[Neo 1973 audio subsystem]] and [http://lists.openmoko.org/pipermail/openmoko-kernel/2009-February/009019.html this thread on the kernel mailing list].
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== Known to work headsets ==
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Please see [http://wiki.openmoko.org/wiki/A2DP#6._Devices_that_work A2DP#Devices_that_work] for complete list
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and comparison table.
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== Preparing ==
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=== Get the bluetooth alsa state and DAC setup script ===
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Download [http://www.robsims.com/GSMBLUETOOTH.txt GSMBLUETOOTH.txt] and [http://handheldshell.com/bluetooth_pcm bluetooth_pcm]
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=== Edit /etc/bluetooth/audio.conf ===
  
 
  # Configuration file for the audio service
 
  # Configuration file for the audio service
Line 26: Line 37:
 
  #[A2DP]
 
  #[A2DP]
 
  #SourceCount=2
 
  #SourceCount=2
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The important part is the SCORouting.
  
 
== Connect and setup the headset ==
 
== Connect and setup the headset ==
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  dbus-send --system --type=method_call --print-reply --dest=org.bluez \
 
  dbus-send --system --type=method_call --print-reply --dest=org.bluez \
 
   "/org/bluez/audio/device0" org.bluez.audio.Headset.Play
 
   "/org/bluez/audio/device0" org.bluez.audio.Headset.Play
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== During the call ==
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After having answered / placed the call, switch the audio to the bluetooth headset. You need a small workaround to get audio in, which is included below.
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alsactl -f GSMBLUETOOTH.txt restore
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./bluetooth_pcm &
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the workaround is to switch '''Capture Left Mixer''' first to '''Analogue Mix Right''' and then back to '''Analogue Mix Right'''. This can be done with alsamixer:
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alsamixer
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(lookup '''Capture Left Mixer''' in the "gui" and toggle the value).
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[[Category:Bluetooth]]
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[[Category:Headsets]]

Latest revision as of 18:23, 22 July 2009

This is mostly based on Neo 1973 audio subsystem and this thread on the kernel mailing list.

Contents

[edit] Known to work headsets

Please see A2DP#Devices_that_work for complete list and comparison table.

[edit] Preparing

[edit] Get the bluetooth alsa state and DAC setup script

Download GSMBLUETOOTH.txt and bluetooth_pcm

[edit] Edit /etc/bluetooth/audio.conf

# Configuration file for the audio service

# This section contains options which are not specific to any
# particular interface
[General]

# If we want to disable support for specific services
# Defaults to supporting all implemented services
#Disable=Control,Source

# SCO routing. Either PCM or HCI (in which case audio is routed to/from ALSA)
# Defaults to HCI
SCORouting=PCM

# Headset interface specific options (i.e. options which affect how the audio
# service interacts with remote headset devices)
[Headset]

# Set to true to only support HSP
# Defaults to false
DisableHFP=false

# Just an example of potential config options for the other interfaces
#[A2DP]
#SourceCount=2

The important part is the SCORouting.

[edit] Connect and setup the headset

export DEVICE=xx:xx:xx:xx:xx
/etc/init.d/bluetooth stop
/etc/init.d/bluetooth start

passkey-agent --default 0000 &

dbus-send --system --type=method_call --print-reply --dest=org.bluez \
 /org/bluez/hci0 org.bluez.Adapter.CreateBonding string:$DEVICE

dbus-send --system --type=method_call --print-reply --dest=org.bluez \
 /org/bluez/audio org.bluez.audio.Manager.CreateHeadset string:$DEVICE

dbus-send --system --type=method_call --print-reply --dest=org.bluez \
 "/org/bluez/audio/device0" org.bluez.audio.Headset.Connect

dbus-send --system --type=method_call --print-reply --dest=org.bluez \
 "/org/bluez/audio/device0" org.bluez.audio.Headset.Play

[edit] During the call

After having answered / placed the call, switch the audio to the bluetooth headset. You need a small workaround to get audio in, which is included below.

alsactl -f GSMBLUETOOTH.txt restore
./bluetooth_pcm &

the workaround is to switch Capture Left Mixer first to Analogue Mix Right and then back to Analogue Mix Right. This can be done with alsamixer:

alsamixer

(lookup Capture Left Mixer in the "gui" and toggle the value).

Personal tools

Edit /etc/bluetooth/audio.conf =

# Configuration file for the audio service

# This section contains options which are not specific to any
# particular interface
[General]

# If we want to disable support for specific services
# Defaults to supporting all implemented services
#Disable=Control,Source

# SCO routing. Either PCM or HCI (in which case audio is routed to/from ALSA)
# Defaults to HCI
SCORouting=PCM

# Headset interface specific options (i.e. options which affect how the audio
# service interacts with remote headset devices)
[Headset]

# Set to true to only support HSP
# Defaults to false
DisableHFP=false

# Just an example of potential config options for the other interfaces
#[A2DP]
#SourceCount=2

Connect and setup the headset

export DEVICE=xx:xx:xx:xx:xx
/etc/init.d/bluetooth stop
/etc/init.d/bluetooth start

passkey-agent --default 0000 &

dbus-send --system --type=method_call --print-reply --dest=org.bluez \
 /org/bluez/hci0 org.bluez.Adapter.CreateBonding string:$DEVICE

dbus-send --system --type=method_call --print-reply --dest=org.bluez \
 /org/bluez/audio org.bluez.audio.Manager.CreateHeadset string:$DEVICE

dbus-send --system --type=method_call --print-reply --dest=org.bluez \
 "/org/bluez/audio/device0" org.bluez.audio.Headset.Connect

dbus-send --system --type=method_call --print-reply --dest=org.bluez \
 "/org/bluez/audio/device0" org.bluez.audio.Headset.Play