Cannot Operate on CODED PHY with nRF5340 Audio DK(broadcast)

[jjm]

I am currently working on LE Audio broadcasting.
The system operates successfully on 1M PHY,
but I would like to use it to function on CODED PHY as well.

Both the receiver and transmitter hardware in use are nRF5340 Audio DK.
I tried with SDK Version: v2.7.0-rc2 and v2.6.1

I try to config to use coded phy(BT_LE_ADV_OPT_CODED options in bt_le_adv_param on broadcast, and BT_LE_SCAN_OPT_CODED on sink),

but it doesn't work well.

Is there any known limitation or issue that prevents operation on CODED PHY?
or, is there any pactice to do that?

[yuxuan.cai]

Hi,

bt_le_adv_param handles parameters for legacy/extended advertising, instead of broadcasting on isochronous channels. bt_iso_chan_io_qos is the right struct to go and for the sample usage, check out iso_combined_bis_and_cis or iso_time_sync on nRF Connect SDK. Hope that helps!

Cheers,

Yuxuan

[Amanda Hsieh]

Hi, 

Could you try to add the following configs into child_image/hci_ipc.conf as this sample?

CONFIG_BT_EXT_ADV=y
CONFIG_BT_CTLR_ADV_EXT=y
CONFIG_BT_CTLR_PHY_CODED=y

Regards,
Amanda H.

[jjm]

Thank you for providing the valuable information. I'm currently in the process of implementing it.

[jjm]

Thank you for the valuable advice. In the current implementation we are testing, all three are set to 'y'.

For similar settings, the situation is as follows:

• CONFIG_BT_EXT_ADV_LEGACY_SUPPORT is not set
• CONFIG_BT_CTLR_ADV_EXT_SUPPORT=y
• CONFIG_BT_CTLR_PHY_CODED_SUPPORT=y

Regards,

Junpei