nrf5340 audio: FOTA Firmware can't build

[Reskyllr]

We have a project based on nrf5340 audio demo,Now we upgrade SDK from NCS2.4 to NCS2.6.

But when I built the DFU, I found that FLASH was not enough

c:/ncs/toolchains/cf2149caf2/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: zephyr\zephyr_pre0.elf section `text' will not fit in region `FLASH'
c:/ncs/toolchains/cf2149caf2/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: region `FLASH' overflowed by 20308 bytes

I know this problem exists in NCS2.5.99 and the reason is, but NCS2.6 should have fixed it?

I know that I need to cut the controller. For BIS headset and BIS gateway, what configurations can I use to reduce the size?

[dejans]

Hi,

Which board do you use?

But when I built the DFU, I found that FLASH was not enough

Could you provide a complete log?

I know this problem exists in NCS2.5.99

Could you provide a reference for this?

Best regards,
Dejan

[Reskyllr]

Hi,dejans,

  The above is the complete log. The other logs have nothing to do with this problem. The only problem is that region `FLASH' overflowed.
For NCS2.5.99, it is clearly stated that FOTA cannot be used, so there is no need to test.
For NCS2.6.0, the instructions provided are as follows:
Updating the SoftDevice：
Both FOTA upgrade methods support updating the SoftDevice on the network core. However, the current default build options for the SoftDevice create a binary that is too large to run on the network core together with a bootloader. To reduce the size of the SoftDevice binary, you can disable unused features in the SoftDevice. See SoftDevice Controller documentation for more information.

What I want to know is which configs I can modify to reduce the size of the softDevice controller.

At the same time, it does not affect BIS functions.

Best regards,

Reskyllr

[dejans]

Hi Reskyllr,

dejans said:

Which board do you use?

Could you provide this information?

Could you also provide your build command?

Reskyllr said:

Updating the SoftDevice：
Both FOTA upgrade methods support updating the SoftDevice on the network core. However, the current default build options for the SoftDevice create a binary that is too large to run on the network core together with a bootloader. To reduce the size of the SoftDevice binary, you can disable unused features in the SoftDevice. See SoftDevice Controller documentation for more information.

Can you provide relevant link?

Best regards,
Dejan

[Reskyllr]

Hi,dejans,

I use nrf5340 audio,The problem occurs in the net core.

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/applications/nrf5340_audio/doc/fota.html

in Updating the SoftDevice,

Best regards,

Reskyllr

[dejans]

Hi Reskyllr,

Reskyllr said:

I use nrf5340 audio

I assume that you mean nrf5340_audio-dk. Is this correct?

dejans said:

Could you also provide your build command?

Can you provide your build command?

Best regards,
Dejan

[Reskyllr]

west build -b nrf5340_audio_dk_nrf5340_cpuapp -p -d headset_dfu -- -DCONFIG_AUDIO_DEV=1 -DCONFIG_AUDIO_DFU=2 -DCONFIG_MCUMGR=y CONFIG_BOOTLOADER_MCUBOOT=y