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  • Case ID: 325546
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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?

Parents Reply
  • 0 in reply to dejans

    Hi,

    I have always used external flash,

    In NCS2.4,i use buildprog.py:
    python buildprog.py -c both -b debug -d headset -m external.

    but in NCS2.6,the dfu firmware does not support this construct.

    Is there something wrong with the build instructions I use? How should I modify it? The reference link does not specify the method.

    Best ragards,

    Reskyllr

Children
  • 0 in reply to Reskyllr

    Hi Reskyllr,

    Reskyllr said:
    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

    I guess this is just a typo on your end, but it should be -DCONFIG_BOOTLOADER_MCUBOOT=y.

    Reskyllr said:
    Is there something wrong with the build instructions I use?

    Apart from what I mentioned above, build command looks fine. Currently, there is a limitation on FOTA upgrade due to updating SoftDevice on the network core in both DFU methods (single and multi-image). SoftDevice binary becomes too large to run on a network core together with a bootloader. Suggested solution for reducing the size of SoftDevice binary would be to disable unused features of the SoftDevice Controller.

    Best regards,
    Dejan 

  • 0 in reply to dejans

    Hi dejans,

    You're right, I'm definitely working in that direction.
    What I need assistance with is: As the controller of Le audio BIS, what features can I disable? I have made some efforts, but the size still cannot meet the needs of dfu.

    Best regards,
    Dejan

  • 0 in reply to Reskyllr

    Hi Reskyllr,

    Which features of SoftDevice Controller have you tried to disable? What was the result? How big improvement did you get on the initial overflow of 20308 bytes?

    Best regards,
    Dejan


  • 0 in reply to Reskyllr

    Hi,dejans,

    It's my hci_ipc.conf.

    CONFIG_BT_ISO_PERIPHERAL=y
    # CONFIG_BT_ISO_CENTRAL=y
    # CONFIG_BT_ISO_BROADCASTER=y
    # CONFIG_BT_ISO_SYNC_RECEIVER=y
    CONFIG_BT_EXT_ADV=y
    CONFIG_BT_PER_ADV_SYNC_TRANSFER_RECEIVER=n
    CONFIG_BT_PER_ADV_SYNC_TRANSFER_SENDER=n
    CONFIG_BT_CTLR_SDC_PERIPHERAL_COUNT=1
    CONFIG_BT_CTLR_CONN_ISO_GROUPS=1
    CONFIG_BT_CTLR_CONN_ISO_STREAMS=2
    CONFIG_BT_CTLR_SYNC_ISO_STREAM_COUNT=2
    CONFIG_BT_CTLR_ADV_ISO_SET=1
    CONFIG_BT_CTLR_ADV_ISO_STREAM_COUNT=2

    # Support two links as a central, or one link as a peripheral
    CONFIG_BT_MAX_CONN=3
    CONFIG_BT_CTLR_SDC_PERIPHERAL_COUNT=1

    # Allow using more than default advertising event length
    CONFIG_BT_CTLR_ADV_DATA_LEN_MAX=251

    # To present the audio at the right point in time, we need the controller and
    # audio clock to be synchronized
    CONFIG_MPSL_TRIGGER_IPC_TASK_ON_RTC_START=y
    CONFIG_MPSL_TRIGGER_IPC_TASK_ON_RTC_START_CHANNEL=4
    CONFIG_CLOCK_CONTROL_NRF_K32SRC_XTAL=n
    CONFIG_CLOCK_CONTROL_NRF_K32SRC_SYNTH=y
    #
    # If using FEM the CONFIG_BT_CTLR_TX_PWR_ANTENNA should be set here if the
    # value required is not 10 dBm
    #

    # hdeadset needn't
    CONFIG_BT_ISO_CENTRAL=n
    CONFIG_BT_ISO_BROADCASTER=y
    CONFIG_BT_ISO_SYNC_RECEIVER=y
    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

    now log:

    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 3604 bytes.

    For Le audio BIS，I don't know what improvements could be made, that's what I want to know.

    Best regards,

    Reskyllr.

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