Bluetooth HSP with pulseaudio, does not connect

[adcpc]

Hi,

I've been trying to use Raspbian (2016-03-18) on a Raspberry 2 with a USB Bluetooth dongle to connect with a HSP headset. Since bluez 5.x does not natively support HSP/HFP, I'm using pulseaudio (built with native HSP support) to enable audio through HSP.

The bluetooth part works well. I can discover and pair my device and even get audio through an A2DP stream.

However, when I switch to HSP (using pavucontrol), I get the following error : "backend-native.c: connect(): Function not implemented".

According to the feedback that I got from the pulseaudio mailing list, the "function not implemented" message is related to a missing support on the kernel : https://lists.freedesktop.org/archives/pulseaudio-discuss/2016-March/025813.html

I will try to reproduce this in the coming days using a RPi 3 with the integrated Bluetooth.

Let me know if additional details are required.

[adcpc]

I tried the same operation using a RPi 3 with its built-in bluetooth 4.1 controller.

The result was different since I didn't have the "function not implemented" errror. In fact, I was able to connect the HSP profile. However, I couldn't get an audio through HSP, just some kind of low level cracking noise. A2DP was still working.

I also tried with a bunch of other bluetooth dongles :

• Bekin USB dongle : Belkin Components F8T013 Bluetooth Adapter - Unknown IC -> Cannot set the controller in run mode. Remains off all the time.
• Targus USB dongle : Broadcom Corp. Bluetooth 4.0 - BCM20702A0 -> Can connect HSP but no audio.
• Maxxtro USB dongle : Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) - CSR8510 -> No HSP connection ("function not implemented")
• PTS USB dongle : USB Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) - Unknown IC -> HSP audio works ! Input and output. I can even switch the profile (HSP <-> A2DP) while playing a wave file.

I'm a bit surprised that the built-in bluetooth controller is not working correctly or not fully supported. Any chance to have anyone from the dev team looking at this issue ?

[JamesH65]

Might be worth checking out issues

#1360
#1402

[jenhro]

same problem
bluetooth on Pi 3 can't works on HSP/HFP (A2DP is OK),OS: ubuntu mate 16.04
still trying solutions.....
well, Targus USB dongle seem to works when a firmware be added
BCM20702A0

[denics]

@adcpc did you manage to use HSP with Raspbian Jessie? can you point me to some documentation please?

[YOUN3SS]

This may help for HSP, not the ideal solution but still working.

http://youness.net/raspberry-pi/bluetooth-headset-raspberry-pi-3-ad2p-hsp

[bmx666]

HSP works only with

• kernel v4.2 and higher
• blueZ v5.43 only (+patches for debian/ubuntu), v5.44 and higher are broken
• ofono v1.17 and higher (patches are not required)
• pulseaudio v10.0 (+patches for ubuntu)

[YOUN3SS]

You need ofono for HFP only.

[mayankc7h7]

@bmx666 "HSP works only with..."
you mean with inbuilt bluetooth? Can you please detail?

[pelwell]

@bmx666 is giving a long list of requirements if you want to use headset profile. The version of BlueZ that comes with Jessie and Stretch does not support it - don't ask me why, it seems a ridiculous decision on the part of the BlueZ devs.

[bluetiger9]

Solution to use the HSP profile with Raspberry Pi 3’s built in BCM43438 chip: #2229 (comment)

[YOUN3SS]

As said @bluetiger9 there is a solution for that, check above link.

[JamesH65]

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[JamesH65]

Closing due to lack of activity. Please request to be reopened if you feel this issue is still relevant.