Evaluation of NRF5340 Confirmation of findings

RE: Evaluation of NRF5340 Confirmation of findings

dejans — Mon, 05 Dec 2022 10:36:02 GMT

Hi,

Regarding your questions
1. If you use analog input, delay should be constant. In case you use USB, note that Zephyr USB stack does not yet support async, which means that both PC and gateway/headset have their own non-synchronized master clocks.
2. Controller is quite flexible in setting the necessary parameters. Parameters that are selected by the controller cannot be set by the application (or host).
3. Changing configuration on the fly is not allowed as this would require tearing down the stream.

Best regards,
Dejan

RE: Evaluation of NRF5340 Confirmation of findings

Moreimic — Fri, 02 Dec 2022 17:14:03 GMT

Hi,

My question is whether it is possible to set the mentioned parameters with version 2.1.0 SDK.

Best regards,

Moreimic

RE: Evaluation of NRF5340 Confirmation of findings

dejans — Fri, 02 Dec 2022 17:08:41 GMT

Hi,

Could you provide debug log from the application core UART?

Best regards,
Dejan

RE: Evaluation of NRF5340 Confirmation of findings

Moreimic — Fri, 02 Dec 2022 13:16:32 GMT

Hi,

The 48-4 settings are the codec capability settings according to the Bluethooth Audio Profile (BAP) specification (https://www.bluetooth.com/de/specifications/bap-html/). These profiles are referenced in the audio.h file to set up the LC3 codec accordingly.

- (PTO) Pre-Transmission Offset

- (BN) The Burst Number, which is the number of payloads supplied for transmission in each CIS event.

- (IRC) Immediate Repeat Count

- (GC)Group Count

Best regards,

Moreimic

RE: Evaluation of NRF5340 Confirmation of findings

dejans — Fri, 02 Dec 2022 12:41:24 GMT

Hi,

[quote user=""]CIS mode has no constant delay at default settings 48-4.[/quote]

What are default settings 48-4?

[quote user=""]In the current state of the nrf5340_audio sample program its not possible yet to set BN events, Number of IRC, Number of Suebevents, Flush timeout, GC ,PTO.[/quote]

What are you referring to as BN, IRC, GC and PTO?

Best regards,
Dejan