On 25.08.2015 08:51, Abhishek Dharmapurikar wrote:
> Hi,
> I was trying to setup HFP uing ofono. I have the following setup
>
> Rasperry Pi B+ ( ARM1176JZF-S)
> Bluez 5.32
> Pulseaudio 6.0
> ofono 1.16
>
> Used the following steps 
> http://padovan.org/blog/2010/02/handsfree-profile-into-bluez-and-ofono/
> start pulseaudio, bluetoothd and ofonod
> Connect to phone using bluetoothctl
> ./enable-modem
> ./dial-number
> loopback
>
> I was able to pair my nexus 4 device and use the script ./dial-number 
> which actually sets a call up. But the audio of the call doesn't route 
> to the default sink. I see the following error in ofonod
> /
> Reject SCO: Agent not registered/
>
> Which could be the reason for the audio problem.
>
> Things that I have already tried.
> Patched http://cgit.freedesktop.org/~jprvita/pulseaudio/ 
> <http://cgit.freedesktop.org/%7Ejprvita/pulseaudio/> file 
> bluetooth-headsets-media-api.
>
> Recompiled the raspbian kernel with
> /CONFIG_BT_SCO
> CONFIG_BT_HCIUSB_SCO/
> enabled
>
> Added
> /Enable = Source,Sink,Headset,Gateway,Control,Media
> Disable = Socket/
> to /etc/bluetooth/audio.conf.
>
> Things that could be wrong
> When I do a pactl list cards, i see the bluetooth card at #0 with two 
> profiles.
> /
>         Profiles:
>                 a2dp_source: High Fidelity Capture (A2DP Source) 
> (sinks: 0, sources: 1, priority: 10, available: yes)
>                 headset_audio_gateway: Headset Audio Gateway (HSP/HFP) 
> (sinks: 1, sources: 1, priority: 20, available: no)
>                 off: Off (sinks: 0, sources: 0, priority: 0, 
> available: yes)
>         Active Profile: a2dp_source
> /
> But when I try making the headset_audio_gateway the default profile. I 
> get
> /$ sudo pactl set-card-profile 0 headset_audio_gateway
> Failure: Input/Output error/
>
> Also read this in the pulseaudio notes 
> http://www.freedesktop.org/wiki/Software/PulseAudio/Notes/6.0/
> "When building PulseAudio, it's possible to choose between "native" 
> and "ofono" BlueZ 5 headset backends."
> How do I specify that I wish to use the ofono headset backend? Is that 
> the problem?
>
Hi,

most of what you find on the web is outdated (like the link above) 
because it refers
to Bluez 4 which has a completely different API compared to Bluez 5. But 
nevertheless
the combination you are using should work. In pulseaudio you have to 
enable ofono
support by adding the parameter "headset=ofono" to 
module-bluetooth-discover in
default.pa. See also
http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Modules/#index35h3

Regards
              Georg