NRF5430 AUDIO - How does audio sync timer synchronise with net_app

[tsmp]

Hi everyone,

I have made a custom app by merging together code from nrf5340_audio and iso_acceptor code. I have one issue however - audio_sync_timer_capture seems to return value significantly delayed to the sdu_ref with equivalent of around 300ms.

How does that work? What does NRF_IPC_CHANNEL_4 do? Is it a feature only available on ipc_radio and missing on hci_ipc?

I am working on nrf sdk v2.9.2.

[tsmp]

I have figured it out - to make it work correctly one has to add following config options to either ipc_radio or hci_ipc config:

CONFIG_MPSL_TRIGGER_IPC_TASK_ON_RTC_START=y
CONFIG_MPSL_TRIGGER_IPC_TASK_ON_RTC_START_CHANNEL=4

I  completely missed sysbuild folder with config files, my bad.

[Elfving]

No problem :) Let us know if there is anything else!

Regards,

Elfving