RE: Coded phy with LE audio application

AHaug — Fri, 28 Jun 2024 13:17:33 GMT

Hi,

I have an update for you already

[quote user=""]Does the central device create and maintain a new ISO connection that is independent form the ACL connection?
This means that for every connected audio sink device, the audio source device will have 2 active connections linked to the aduio source device.[/quote]

This is correct, CIS does also require an ACL for control

[quote user=""]Assuming the answer to the first question is yes and there are 2 connections, How to verify that the ISO connection is using the coded PHY as well? or the ACL connection was made using the coded PHY, this should imply that the following ISO connection will be also using the codec PHY.[/quote]

A connection always inherits PHY from the PHY that's used in the advertising, but here it is strictly speaking a new connection thats being made without going through an ACL. To my understanding, the PHY is inherited also in this case, but I recommend you to verify this by printing debug logs from the Softdevice (it should be possible to get an output as it should be stated there)

Kind regards,
Andreas

RE: Coded phy with LE audio application

AHaug — Fri, 28 Jun 2024 12:01:19 GMT

Hi Ahmed,

I've picked up your case and will be looking into your query, however I will require some time.

I will get back to you with an update during the upcoming week.

Kind regards,
Andreas