nrf_audio sample with FOTA enabled exceeds ipc_radio FLASH partition

RE: nrf_audio sample with FOTA enabled exceeds ipc_radio FLASH partition

Amanda Hsieh — Mon, 05 Aug 2024 20:25:35 GMT

Hi,

[quote user="Benno Trutmann"]I only need a controller which supports the LE audio broadcast source role. Can I disable all these options except CONFIG_BT_ISO_BROADCASTER? I found no documentation about these options.[/quote]

Yes, you also can build as Broadcast source. See https://github.com/nrfconnect/sdk-nrf/blob/v2.7.0/applications/nrf5340_audio/broadcast_source/Kconfig.defaults#L18

[quote user="Benno Trutmann"]Regarding setting SB_CONFIG_SECURE_BOOT_NETCORE=n: Is then updating the ipc_radio image still possible but updating the b0n image is not possible anymore?[/quote]

It still can update ipc_radio image for the netcore instead of mcuboot.

-Amanda H.

RE: nrf_audio sample with FOTA enabled exceeds ipc_radio FLASH partition

Benno Trutmann — Mon, 05 Aug 2024 08:11:17 GMT

Sorry for the late reply, I was away.

In sysbuild/ipc_radio/prj_release.conf I found the following enabled options:

CONFIG_BT_ISO_PERIPHERAL=y
CONFIG_BT_ISO_CENTRAL=y
CONFIG_BT_ISO_BROADCASTER=y
CONFIG_BT_ISO_SYNC_RECEIVER=y

I only need a controller which supports the LE audio broadcast source role. Can I disable all these options except CONFIG_BT_ISO_BROADCASTER? I found no documentation about these options.

Regarding setting SB_CONFIG_SECURE_BOOT_NETCORE=n: Is then updating the ipc_radio image still possible but updating the b0n image is not possible anymore?

RE: nrf_audio sample with FOTA enabled exceeds ipc_radio FLASH partition

Amanda Hsieh — Wed, 24 Jul 2024 21:17:57 GMT

[quote user="Benno Trutmann"]How can I solve this problem?[/quote]

Try to reduce the size of the application by disabling some features in the https://github.com/nrfconnect/sdk-nrf/blob/v2.7.0/applications/nrf5340_audio/sysbuild/ipc_radio/prj_release.conf.

Do you need b0n to update mcuboot? If not, you can disable it by SB_CONFIG_SECURE_BOOT_NETCORE in the sysbuild_fota.conf.

RE: nrf_audio sample with FOTA enabled exceeds ipc_radio FLASH partition

Benno Trutmann — Wed, 24 Jul 2024 16:09:57 GMT

Here is the full build log:

devzone.nordicsemi.com/.../build3.zip

RE: nrf_audio sample with FOTA enabled exceeds ipc_radio FLASH partition

Benno Trutmann — Wed, 24 Jul 2024 16:05:29 GMT

When the build comes to the signing steps I get the following error:

FAILED: signed_by_mcuboot_and_b0_ipc_radio.bin C:/nrf5340_audio/build/sink-fota/signed_by_mcuboot_and_b0_ipc_radio.bin

...

Usage: imgtool.py sign [OPTIONS] INFILE OUTFILE
Try 'imgtool.py sign -h' for help.
Error: Image size (0x37920) + trailer (0x630) exceeds requested size 0x37800

How can I solve this problem?

RE: nrf_audio sample with FOTA enabled exceeds ipc_radio FLASH partition

Benno Trutmann — Wed, 24 Jul 2024 16:03:58 GMT

I tried to build a FOTA variant now with a nrf5340_audio/sysbuild/ipc_radio/prj_fota.conf copied from prj_release.conf with the following disabled:

CONFIG_DEBUG=n
CONFIG_ASSERT=n
CONFIG_STACK_USAGE=n
CONFIG_THREAD_MONITOR=n
CONFIG_SERIAL=n
CONFIG_CONSOLE=n
CONFIG_PRINTK=n
CONFIG_UART_CONSOLE=n
CONFIG_BOOT_BANNER=n
CONFIG_NCS_BOOT_BANNER=n

With that config I managed to link the ipc_radio image, but only in a tiny margin:
Memory region         Used Size Region Size %age Used
           FLASH:      226592 B       222 KB     99.68%
             RAM:       55652 B        64 KB     84.92%

Is there more I can disable? I fear for the future, when the softdevice controller grows only a little in size then there is no space anymore.

RE: nrf_audio sample with FOTA enabled exceeds ipc_radio FLASH partition

Benno Trutmann — Wed, 24 Jul 2024 16:02:28 GMT

My reply is not accepted by the system, I always get "An error occurred. Please try again or contact your administrator."

RE: nrf_audio sample with FOTA enabled exceeds ipc_radio FLASH partition

Amanda Hsieh — Wed, 24 Jul 2024 13:29:15 GMT

We don't think this will work due to locking granularity in nRF5340 devices (the SPU flash regions are 16kb each). The SPU also controls write protection, and b0n needs to be write-protected to be immutable.

RE: nrf_audio sample with FOTA enabled exceeds ipc_radio FLASH partition

Benno Trutmann — Mon, 22 Jul 2024 08:51:43 GMT

1. Why is reducing the b0n partition not a good solution?

2. I tried a nrf5340_audio/sysbuild/b0n/prj_fota.conf with set CONFIG_PM_PARTITION_SIZE_B0_IMAGE=0x6800 already. It had no effect on the size of the allocated b0n partition.

RE: nrf_audio sample with FOTA enabled exceeds ipc_radio FLASH partition

Amanda Hsieh — Fri, 19 Jul 2024 21:00:57 GMT

You can create a prj_fota.conf under nrf5340_audio\sysbuild\b0n to include CONFIG_PM_PARTITION_SIZE_B0_IMAGE, but I don't think that is a good solution and will not recommend that.

RE: nrf_audio sample with FOTA enabled exceeds ipc_radio FLASH partition

Benno Trutmann — Fri, 19 Jul 2024 06:46:25 GMT

But I would rather like to reduce the b0n partition. How can I do that?

RE: nrf_audio sample with FOTA enabled exceeds ipc_radio FLASH partition

Amanda Hsieh — Thu, 18 Jul 2024 16:22:16 GMT

Hi,

You could duplicate sysbuild/prj_release.conf as prj_fota.conf and disable part of the features to reduce the the softdevice controller size. You can refer to https://github.com/nrfconnect/sdk-nrf/blob/v2.7.0/applications/nrf5340_audio/prj_release.conf

RE: nrf_audio sample with FOTA enabled exceeds ipc_radio FLASH partition

Benno Trutmann — Thu, 18 Jul 2024 14:05:19 GMT

Hi Amanda.

I used the west command:

$ west build -d build/test -p -b nrf5340_audio_dk/nrf5340/cpuapp --sysbuild -- -DFILE_SUFFIX=fota -DEXTRA_CONF_FILE=broadcast_sink.conf

whereas broadcast_sink.conf contains the following:

CONFIG_TRANSPORT_BIS=y
CONFIG_AUDIO_DEV=1

Here is the build log:

devzone.nordicsemi.com/.../4807.build.zip

RE: nrf_audio sample with FOTA enabled exceeds ipc_radio FLASH partition

Amanda Hsieh — Thu, 18 Jul 2024 13:34:26 GMT

Hi,

Could you build for the release version: -DFILE_SUFFIX=release?

How do you build the nrf_audio sample as BIS headset with enabled FOTA? Using command or VS code? Could you provide the command or build configuration of VS code? Please provide more clear information to help reproduce the issue.

Regards,
Amanda H.