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  • Case ID: 330367
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The question of CIS and BIS modes work at the same time

huma

In my last question, devzone.nordicsemi.com/.../can-cis-and-bis-modes-work-at-the-same-time-or-switching-freely, I have asked that if the CIS and BIS modes can work at the same time. And i got the answer is can, and there is example show that in the V2.7.0 SDK.

But i found the example(ISO combined BIS and CIS) is only using for the common data transmissions, what i want is that the CIS and BIC modes can work at the same time for the le-audio, And i found that the nrf5340 audio application in the V2.7.0 SDK is still only can configure one mode at one time. I know that in theory, le audio can also be considered as transmitting data, but due to specific bandwidth and resource limitations, I have to confirm again whether nrf5340 can achieve le audio working in both CIS and BIS modes at same time. If it can, is there any plan to implement it into nrf5340 audio application? If it can not, does nrf54H20 can enable the two mode at the same time for the le-audio?

By the way, i also found that the nrf5340 audio application in the V2.7.0 SDK can not work well, when it started as the default headset mode, it will output these following logs.

Thank you very much and looking forward to your help!

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    Hello,

    By the way, i also found that the nrf5340 audio application in the V2.7.0 SDK can not work well, when it started as the default headset mode, it will output these following logs.

    So this is the output you get after flashing the default app with headset mode enabled to an Audio DK? How are you flashing it?

    And i found that the nrf5340 audio application in the V2.7.0 SDK is still only can configure one mode at one time. I know that in theory, le audio can also be considered as transmitting data, but due to specific bandwidth and resource limitations, I have to confirm again whether nrf5340 can achieve le audio working in both CIS and BIS modes at same time. If it can, is there any plan to implement it into nrf5340 audio application? If it can not, does nrf54H20 can enable the two mode at the same time for the le-audio?

    I haven't looked into this myself, but I see from the cases you've linked to that it should be able to do both concurrently. It seems to be confirmed in several of those cases. It might just be that the sample we linked to doesn't demonstrate this.

    Regards,

    Elfving

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  • 0

    Hello,

    By the way, i also found that the nrf5340 audio application in the V2.7.0 SDK can not work well, when it started as the default headset mode, it will output these following logs.

    So this is the output you get after flashing the default app with headset mode enabled to an Audio DK? How are you flashing it?

    And i found that the nrf5340 audio application in the V2.7.0 SDK is still only can configure one mode at one time. I know that in theory, le audio can also be considered as transmitting data, but due to specific bandwidth and resource limitations, I have to confirm again whether nrf5340 can achieve le audio working in both CIS and BIS modes at same time. If it can, is there any plan to implement it into nrf5340 audio application? If it can not, does nrf54H20 can enable the two mode at the same time for the le-audio?

    I haven't looked into this myself, but I see from the cases you've linked to that it should be able to do both concurrently. It seems to be confirmed in several of those cases. It might just be that the sample we linked to doesn't demonstrate this.

    Regards,

    Elfving

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