1M PHY update for nrf5340_audio

RE: 1M PHY update for nrf5340_audio

Amanda Hsieh — Tue, 28 Jan 2025 19:14:14 GMT

SDC does support ISO on coded PHY, but the application cannot handle that configuration properly. Coded PHY is very slow and can not work with a 10ms ISO interval, but that's the only support configuration from the nRF5340 audio project.

RE: 1M PHY update for nrf5340_audio

Ridhi — Tue, 28 Jan 2025 06:15:22 GMT

Okay Amanda

If that is the case then can you pls assist why LE Coded is mentioned in these

RE: 1M PHY update for nrf5340_audio

Amanda Hsieh — Mon, 27 Jan 2025 17:16:26 GMT

[quote user="RIDHIMA"]How to set PHY as only LE 1M for both primary and secondary data in CIS audio in nrf5340 auio sample ncs 2.6.0[/quote]

Please create a support case.

[quote user="RIDHIMA"]Can we do the same for LE Coded PHY with nrf5340 audio broadacster sample ncs 2.6.0?[/quote]

No, the implementation for LE Audio doesn't support it out of the box. You have asked the same question in several posts/cases recently. Please stop it since my colleagues have delivered feedback from the development team.

RE: 1M PHY update for nrf5340_audio

Ridhi — Sat, 25 Jan 2025 12:45:37 GMT

Hey Amanda

How to set PHY as only LE 1M for both primary and secondary data in CIS audio in nrf5340 auio sample ncs 2.6.0

Can we do the same for LE Coded PHY with nrf5340 audio broadacster sample ncs 2.6.0?

RE: 1M PHY update for nrf5340_audio

Amanda Hsieh — Tue, 02 Apr 2024 13:45:14 GMT

Hi,

For NCS v2.6.0, it needs:

update the option for creating ADV-EXT in bt_mgmt.h like the following

The diff is 
+++ b/applications/nrf5340_audio/src/bluetooth/bt_management/bt_mgmt.h
@@ -12,7 +12,7 @@
#include <zephyr/bluetooth/audio/audio.h>
#define LE_AUDIO_EXTENDED_ADV_NAME                                                                 \
-       BT_LE_ADV_PARAM(BT_LE_ADV_OPT_EXT_ADV | BT_LE_ADV_OPT_USE_NAME,                            \
+       BT_LE_ADV_PARAM(BT_LE_ADV_OPT_EXT_ADV | BT_LE_ADV_OPT_USE_NAME | BT_LE_ADV_OPT_NO_2M,                            \
                        CONFIG_BLE_ACL_EXT_ADV_INT_MIN, CONFIG_BLE_ACL_EXT_ADV_INT_MAX, NULL)

The key is to add BT_LE_ADV_OPT_NO_2M.

update the QoS setting like in zephyr host (probably you have already done it)

diff --git a/include/zephyr/bluetooth/audio/audio.h b/include/zephyr/bluetooth/audio/audio.h
index 03f451a3c8b..f7ace749e9d 100644
--- a/include/zephyr/bluetooth/audio/audio.h
+++ b/include/zephyr/bluetooth/audio/audio.h
@@ -446,7 +446,7 @@ enum {
  *  @param _pd Presentation Delay (usec)
  */
#define BT_AUDIO_CODEC_QOS_UNFRAMED(_interval, _sdu, _rtn, _latency, _pd)                         \
-       BT_AUDIO_CODEC_QOS(_interval, BT_AUDIO_CODEC_QOS_FRAMING_UNFRAMED, BT_AUDIO_CODEC_QOS_2M,  \
+       BT_AUDIO_CODEC_QOS(_interval, BT_AUDIO_CODEC_QOS_FRAMING_UNFRAMED, BT_AUDIO_CODEC_QOS_1M,  \
                           _sdu, _rtn, _latency, _pd)

-Amanda H.

RE: 1M PHY update for nrf5340_audio

DZ1 — Sat, 30 Mar 2024 09:00:10 GMT

Thanks for your reply.

Based on the post, I changed the required line by using BT_CODEC_QOS_1M instead of BT_CODEC_QOS_2M and rebuild the demo. However, it's still 2M PHY for BIS/CIS cases.

So, I would like to know if I missed something, or I have to create a preset by myself?

Best,

RE: 1M PHY update for nrf5340_audio

Amanda Hsieh — Mon, 25 Mar 2024 15:38:44 GMT

Hi,

Have a look at this post.

Regards,
Amanda H.