RE: nRF5430 audio DK - configure stereo BIC mode

ChrisKay — Thu, 22 Feb 2024 21:38:22 GMT

Hello Amanda,

thank you again for your support. Indeed I was using the SDK version 2.5.1.

I will give the 2.5.2 a try. Unfortunately I have many different topics on my list right now. So tinkering with the Audio DK is low priority right now. Therefore my responses might be coming slow.

I've tested both options I2S_Input and USB Input in both cases the stream is only working for a few seconds.

Here is the output of the sink device

*** Booting nRF Connect SDK v2.5.2 ***
HL [00:00:00.258,453] <inf> fw_info:
         nRF5340 Audio nRF5340 Audio DK cpuapp
         NCS base version: 2.5.2
         Cmake run : Thu Feb 22 23:17:43 2024
HL [00:00:00.258,453] <inf> fw_info: ------- DEBUG BUILD -------
HL [00:00:00.258,483] <inf> fw_info: HEADSET left device
HL [00:00:00.269,104] <inf> board_version: Compatible board/HW version found: 1.                                                                                                                                                                                                                               0.0
HL [00:00:00.307,189] <inf> bt_mgmt_ctlr_cfg: Controller: LL_ACS_NRF53. Version:                                                                                                                                                                                                                                3424
HL [00:00:00.309,143] <inf> bt_mgmt: Local identity addr: D0:E9:D3:9B:BE:90 (ran                                                                                                                                                                                                                               dom)
HL [00:00:00.435,729] <inf> bt_mgmt_scan: Local addr: D0:E9:D3:9B:BE:90 (random)                                                                                                                                                                                                                               . May time out. Updates not printed
HL [00:00:00.435,729] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:00.439,300] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER f                                                                                                                                                                                                                               ound, id: 0x3b7d61
HL [00:00:00.652,099] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:01.452,056] <inf> broadcast_sink: Syncing to broadcast stream index 0
HL [00:00:01.452,239] <inf> streamctrl_broadcast_sink: Presentation delay 10000                                                                                                                                                                                                                                us is set
HL [00:00:02.252,349] <inf> broadcast_sink: Stream index 0 started
HL [00:00:02.252,349] <inf> broadcast_sink: Codec config for LC3:
HL [00:00:02.252,349] <inf> broadcast_sink:     Frequency: 48000 Hz
HL [00:00:02.252,380] <inf> broadcast_sink:     Frame Duration: 10000 us
HL [00:00:02.252,380] <inf> broadcast_sink:     Octets per frame: 120 (96000 kbp                                                                                                                                                                                                                               s)
HL [00:00:02.252,380] <inf> broadcast_sink:     Frames per SDU: 1
HL [00:00:02.252,410] <inf> broadcast_sink:     Channel allocation: 0x1
HL [00:00:02.253,601] <wrn> le_audio_rx: Not in streaming state, throwing data:                                                                                                                                                                                                                                1
HL [00:00:02.264,038] <inf> audio_datapath: Drft comp state: CALIB
HL [00:00:02.266,021] <wrn> audio_datapath: Data received, total underruns: 2

HL [00:00:02.364,013] <inf> audio_datapath: Drft comp state: OFFSET
HL [00:00:02.586,822] <wrn> audio_datapath: Data received, total underruns: 3
HL [00:00:02.863,708] <inf> audio_datapath: Drft comp state: LOCKED
HL [00:00:02.863,739] <inf> audio_datapath: Pres comp state: MEAS
HL [00:00:02.973,724] <inf> audio_datapath: Pres comp state: WAIT
HL [00:00:03.113,739] <inf> audio_datapath: Pres comp state: INIT
HL [00:00:03.123,748] <inf> audio_datapath: Pres comp state: MEAS
HL [00:00:03.234,405] <inf> audio_datapath: Pres comp state: LOCKED
HL [00:00:16.813,201] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:16.815,277] <inf> bt_mgmt_scan: Local addr: D0:E9:D3:9B:BE:90 (random). May time out. Updates not printed
HL [00:00:16.815,277] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:16.815,277] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:16.833,007] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x3b7d61
HL [00:00:17.052,734] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:17.053,222] <inf> broadcast_sink: Stream stopped by user
HL [00:00:17.053,253] <inf> broadcast_sink: Stream index 0 stopped. Reason: 22
HL [00:00:17.053,588] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:17.055,664] <inf> bt_mgmt_scan: Local addr: D0:E9:D3:9B:BE:90 (random). May time out. Updates not printed
HL [00:00:17.055,664] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:17.055,694] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:17.058,654] <inf> audio_datapath: Pres comp state: INIT
HL [00:00:17.061,828] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x3b7d61
HL [00:00:17.260,528] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:17.260,803] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:17.262,847] <inf> bt_mgmt_scan: Local addr: D0:E9:D3:9B:BE:90 (random). May time out. Updates not printed
HL [00:00:17.262,878] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:17.262,878] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:17.269,989] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x3b7d61
HL [00:00:17.454,193] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:17.454,467] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:17.456,512] <inf> bt_mgmt_scan: Local addr: D0:E9:D3:9B:BE:90 (random). May time out. Updates not printed
HL [00:00:17.456,512] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:17.456,542] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:17.489,959] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x3b7d61
HL [00:00:17.652,770] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:17.653,045] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:17.655,090] <inf> bt_mgmt_scan: Local addr: D0:E9:D3:9B:BE:90 (random). May time out. Updates not printed
HL [00:00:17.655,090] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:17.655,090] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:17.659,973] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x3b7d61
HL [00:00:17.852,783] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:17.853,057] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:17.855,102] <inf> bt_mgmt_scan: Local addr: D0:E9:D3:9B:BE:90 (random). May time out. Updates not printed
HL [00:00:17.855,102] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:17.855,133] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:17.881,835] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x3b7d61
HL [00:00:18.052,795] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:18.053,070] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:18.055,114] <inf> bt_mgmt_scan: Local addr: D0:E9:D3:9B:BE:90 (random). May time out. Updates not printed
HL [00:00:18.055,114] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:18.055,114] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:18.071,868] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x3b7d61
HL [00:00:18.252,807] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:18.253,051] <inf> streamctrl_broadcast_sink: PA sync lost
HL [00:00:18.255,096] <inf> bt_mgmt_scan: Local addr: D0:E9:D3:9B:BE:90 (random). May time out. Updates not printed
HL [00:00:18.255,126] <inf> bt_mgmt_scan: Scanning successfully started
HL [00:00:18.255,126] <inf> streamctrl_broadcast_sink: Restarted scanning for broadcaster
HL [00:00:18.259,979] <inf> bt_mgmt_scan: Broadcast source NRF5340_BROADCASTER found, id: 0x3b7d61
HL [00:00:18.452,819] <inf> streamctrl_broadcast_sink: PA synced
HL [00:00:18.453,063] <inf> streamctrl_broadcast_sink: PA sync lost

What I have done is to install the SDK 2.5.2

add the following lines to my prj.conf

CONFIG_STREAM_BIDIRECTIONAL=n
CONFIG_TRANSPORT_BIS=y
CONFIG_AUDIO_SOURCE_I2S=y

and build everything using the script

py buildprog.py -c both -b debug -d both -p -s --recover_on_fail

Best regards

Chris

RE: nRF5430 audio DK - configure stereo BIC mode

Amanda Hsieh — Tue, 20 Feb 2024 13:57:55 GMT

Hi,

Sorry for the delay.

[quote user="ChrisKay"]Another problem ist that the regular BIS example is already unstable. The link is lost after a minute or so. Resetting the sink device restores the stream.
[/quote]

What NCS version are you using? Could you try with the latest version, v2.5.2?

Also for setup of the BIS, please add the following configs into prj.conf

CONFIG_TRANSPORT_BIS=y # the default setting for project is CIS mode, so we need to turn this on for BIS

CONFIG_AUDIO_SOURCE_I2S=y # using I2S instead of USB can lead to better user experience

If it doesn't help with the issue, please provide the log from the application.

Regards,
Amanda H.

RE: nRF5430 audio DK - configure stereo BIC mode

ChrisKay — Thu, 08 Feb 2024 20:49:11 GMT

Thank you Amanda, From what I see on in the Github links it looked doable. Unfortunatley the code is outdate not suitable for the newest SDKs anymore.

Another problem ist that the regular BIS example is already unstable. The link is lost after a minute or so. Resetting the sink device restores the stream.

I've added this lines to the prj.conf file

CONFIG_STREAM_BIDIRECTIONAL=n
CONFIG_TRANSPORT_BIS=n

maybe I'm missing something else?

RE: nRF5430 audio DK - configure stereo BIC mode

Amanda Hsieh — Fri, 02 Feb 2024 14:17:21 GMT

Hi,

Check out this post.

Regards,
Amanda H.

RE: nRF5430 audio DK - configure stereo BIC mode

ChrisKay — Thu, 01 Feb 2024 23:56:48 GMT

Oh, a clear case of RTFM first. The 160 Dollar audio DK only has a mono headphone output. Whatever lead to this design decision, I find it hard to believe, that you do not offer a Stereo output on this.

In this case, what can I do to get an Stereo signal? Attach a simple Stereo DAC like the PCM5102 to the I2S bus? What parts of the source code must be modified?

Best regards

Chris