Auracast example

[JeroenT]

I am using NCS v2.8.0.

After successfully running the headset example with one gateway, one left channel receiver and one right channel receiver am trying to get the Auracast example working, so I can connect three receivers to the gateway.

I added CONFIG_TRANSPORT_BIS=Y to prj.cfg, but after compiling and programming the system functionality did not change to Auracast. Do I need to change something to nrf5340_audio_dk_devices.json as well? The current one see below. I also did not find any references to CONFIG_TRANSPORT_BIS in the source code of v2.8.0. Do I miss something?

[
{
"nrf5340_audio_dk_snr": 1050111739,
"nrf5340_audio_dk_dev": "headset",
"channel": "left"
},
{
"nrf5340_audio_dk_snr": 1050156869,
"nrf5340_audio_dk_dev": "gateway",
"channel": "NA"
},
{
"nrf5340_audio_dk_snr": 1050128347,
"nrf5340_audio_dk_dev": "headset",
"channel": "right"
}
]

[Amanda Hsieh]

Hi, 

Try to delete the build folder and build again. You can check the .config file under build/nrf5340_audio/zephyr to see whether the CONFIG_TRANSPORT_BIS=Y takes effect or not.

Regards,
Amanda H. 

[JeroenT]

Hi Amanda,

Thanks for your reply.

I deleted the build folder and after rebuild the .config indeed shows CONFIG_TRANSPORT_BIS=Y. I am not sure how to verify that Auracast is active now. Is it possible to change the reception on the headsets/receivers to stereo? Can I just add an extra headset/receiver to nrf5340_audio_dk_devices.json?

[Amanda Hsieh]

JeroenT said:

I am not sure how to verify that Auracast is active now.

You can refer to the test section of the Broadcast sink (BIS /headset) and Broadcast source (BIS /gateway).

JeroenT said:

Is it possible to change the reception on the headsets/receivers to stereo?

Check out the branch in this post. 

JeroenT said:

Can I just add an extra headset/receiver to nrf5340_audio_dk_devices.json?

Yes.

[JeroenT]

Hi. I am trying to get stereo example working, but I get a build error. With the original v2.8.0\nrf directory it just works. I hope you could help me to correct my way of building it. I take these steps:

- Open cmd prompt

- Type: cd ncs\v2.8.0

- Type: git clone https://github.com/rick1082/sdk-nrf

- Type: cd sdk-nrf

- Type: git checkout stereo_bis_receiver_pre270

- Type: cd applications\nrf5340_audio\tools\buildprog

- Type: buildprog.py -c both -b debug -d both

+------------+----------+---------+--------------+---------------------+---------------------+
| snr | snr conn | device | only reboot | core app programmed | core net programmed |
+------------+----------+---------+--------------+---------------------+---------------------+
| 1050121107 | ←[33mFalse←[0m | headset | Not selected | Selected | Selected |
| 1050197742 | ←[33mFalse←[0m | gateway | Not selected | Selected | Selected |
| 1000 | ←[33mFalse←[0m | headset | Not selected | Selected | Selected |
+------------+----------+---------+--------------+---------------------+---------------------+
Invoking build step
Net core uses precompiled hex or child image
Run: west build C:\ncs\v2.8.0\sdk-nrf\applications\nrf5340_audio -b nrf5340_audio_dk/nrf5340/cpuapp --sysbuild -d C:\ncs\v2.8.0\sdk-nrf\applications\nrf5340_audio\build\dev_headset\build_debug
ninja: error: loading 'build.ninja': The system cannot find the file specified.

FATAL ERROR: command exited with status 1: 'C:\Program Files\CMake\bin\cmake.EXE' --build 'C:\ncs\v2.8.0\sdk-nrf\applications\nrf5340_audio\build\dev_headset\build_debug'

[Amanda Hsieh]

How do you install the NCS? I would suggest to Installate with Toolchain Manager, and then open the command prompt for NCS v2.8.0  to build.