nRF52833: CDC ACM USB Bootloader example is not available.

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Akib — Wed, 05 Jan 2022 04:13:47 GMT

Hi,

Thanks for quick reply.

May be there are some issue with nRF connect because i have flashed same hex through command prompt using nrfjprog cmd and mergehex cmd then every thing is working fine we don't have any issue now.

once again thanks for the support. 🙂

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Einar Thorsrud — Tue, 04 Jan 2022 14:16:54 GMT

Hi,

[quote user="Akib "]we are not using any soft device but in loader section MBR hex is added.[/quote]

I see. As long as you flash the MBR hex together with the application from the programmer app, then this should be equivalent and the flash content should be exactly the same and it should work the same.

[quote user="Akib "]So at time of flashing we ware added MBR hex file too then its looks good even serial port is detecting too but while updating device through bootloader it's throwing error.[/quote]

This error states that the serial port cannot be opened. This could for instance be because of an issue on your PC, or that the firmware running on the nRF did not enable the USB properly (like an issue with the USB bootloader not started).

[quote user="Akib "]And one strange thing i have observed too if i flash through SES and read device through nRf connect then it's throwing the same error.[/quote]

This is peculiar, as a simple read does not change the flash content at al. Could it be that nRF Connect Programmer was holding the USB serial port? What happens if you close it (or even reboot the computer) and try again? What if you reset the nRF instead, or do both?

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Akib — Tue, 04 Jan 2022 12:06:56 GMT

Hi,

Thanks for the reply and Happy new year.

we are not using any soft device but in loader section MBR hex is added.

So at time of flashing we ware added MBR hex file too then its looks good even serial port is detecting too but while updating device through bootloader it's throwing error.

even in nRf connect we can see that the memory layout is same.

device flashed through nRf connect.

device flashed through SES.

And one strange thing i have observed too if i flash through SES and read device through nRf connect then it's throwing the same error.

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Einar Thorsrud — Mon, 03 Jan 2022 07:37:33 GMT

Hi,

It seems like you are missing the SoftDevice. If you flash an example project that depend on the SoftDevice from SES, that will also flash the SoftDevice, as it is an additional load file. See here:

The SoftDevice is not part of your application hex, so if using something else you need to also add and flash the SoftDevice hex file. With nRF Connect Programmer simply add the SoftDevice hex also before you press "Erase & write". You fill find the SoftDevices under <nRF5 SDK>\components\softdevice\.

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Akib — Fri, 31 Dec 2021 13:33:35 GMT

Hi,

Thanks for the support now every thing is working fine.

but still there is some thing strange, if we flash our pcb via SES the every thing working fine but if we flash same .hex file through nrfjprog --program or nrf connect then its not working...

the left one, device flashed through SES and right one is the same .hex file.

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Einar Thorsrud — Tue, 14 Dec 2021 10:20:01 GMT

Hi,

I do not spot any issue in the memory configuration. Can you elaborate on what is not working when you use the MBR? We probably need to start there to understand how the presence of a MBR can impact it.

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Akib — Mon, 13 Dec 2021 13:21:57 GMT

Hi,

Thanks for the support we are able flash our application in custom PCB.

first its was not jumping to application so we generated bootloader settings then its start our application and it is working but few of functionality are not working and the strange thing is that if we run our application without MBR then every thing is working fine.

so is there any thing we are missed to do or how this issue will fixed?

Without MBR flash and RAM address

With MBR flash and RAM address

FLASH_PH_START=0x0

FLASH_PH_SIZE=0x80000

RAM_PH_START=0x20000000

RAM_PH_SIZE=0x20000

FLASH_START=0x000

FLASH_SIZE=0x7e000

RAM_START=0x20000000

RAM_SIZE=0x20000

FLASH_PH_START=0x0

FLASH_PH_SIZE=0x80000

RAM_PH_START=0x20000000

RAM_PH_SIZE=0x20000

FLASH_START=0x1000

FLASH_SIZE=0x70000

RAM_START=0x20000008

RAM_SIZE=0x1fff8

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Einar Thorsrud — Tue, 23 Nov 2021 08:15:35 GMT

Hi,

I see, then there should be room for the application update.

Now I spotted an issue with your application which I overlooked before. You have set FLASH_START to 0, but the MBR resides on address 0. The start address of your application must be 0x1000. This must clearly be fixed. There may be other issues as well though, as I do not immediately see that you would get an insufficient resources error because of this. But please fix this and test again first. If it still fails, can you upload the project files for your application and bootloader so that I can more easily see if I spot anything?

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Akib — Tue, 23 Nov 2021 05:54:39 GMT

The bootloader is the exact same with the working case where you use blinky and the failing case where you use your larger custom app, right?

Yes the bootloader is exact same.

Have you by any chance configured the bootloader to only support dual bank updates?

No.

Specifically, what is NRF_DFU_FORCE_DUAL_BANK_APP_UPDATES set to in the bootloader's sdk_config.h?

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Einar Thorsrud — Mon, 22 Nov 2021 20:21:20 GMT

Hi,

Insuffisient resources here means that there is not enough room in flash.

I did not spot any obviously wrong with the addresses here (though I cannot guarantee I did not mis anything). The bootloader is the exact same with the working case where you use blinky and the failing case where you use your larger custom app, right? Have you by any chance configured the bootloader to only support dual bank updates? Specifically, what is NRF_DFU_FORCE_DUAL_BANK_APP_UPDATES set to in the bootloader's sdk_config.h?

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Akib — Mon, 22 Nov 2021 09:41:14 GMT

Hi,

In SDK 17.1.0., I am trying to build a bootloader based on the secure_bootloader_usb_mbr_pca10100e because it already has the crypto needed (when migrating from a 10056 example we had to do this manually). I had to download and build uECC. I could flash the bootloader first development kit its worked.

nrfutil dfu usb-serial -pkg blinky_mbr.zip -p COM14

Then i have tried with our custom PCB where its worked with blinky_mbr example.

and then after i have tried with our firmware so it is thronging resource related error.

Then again i have tried with some small firmware then it's able to programmed.

Here is our layout. Please correct if anything is wrong.

Bootloader:

<!DOCTYPE Linker_Placement_File>
<Root name="Flash Section Placement">
  <MemorySegment name="FLASH1" start="$(FLASH_PH_START)" size="$(FLASH_PH_SIZE)">
    <ProgramSection load="no" name=".reserved_flash" start="$(FLASH_PH_START)" size="$(FLASH_START)-$(FLASH_PH_START)" />
    <ProgramSection alignment="0x100" load="Yes" name=".vectors" start="$(FLASH_START)" />
    <ProgramSection alignment="4" load="Yes" name=".init" />
    <ProgramSection alignment="4" load="Yes" name=".init_rodata" />
    <ProgramSection alignment="4" load="Yes" name=".text" size="0x4" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".crypto_data" inputsections="*(SORT(.crypto_data*))" address_symbol="__start_crypto_data" end_symbol="__stop_crypto_data" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".dfu_trans" inputsections="*(SORT(.dfu_trans*))" address_symbol="__start_dfu_trans" end_symbol="__stop_dfu_trans" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".nrf_queue" inputsections="*(.nrf_queue*)" address_symbol="__start_nrf_queue" end_symbol="__stop_nrf_queue" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".log_const_data" inputsections="*(SORT(.log_const_data*))" address_symbol="__start_log_const_data" end_symbol="__stop_log_const_data" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".nrf_balloc" inputsections="*(.nrf_balloc*)" address_symbol="__start_nrf_balloc" end_symbol="__stop_nrf_balloc" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".log_backends" inputsections="*(SORT(.log_backends*))" address_symbol="__start_log_backends" end_symbol="__stop_log_backends" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".nrf_sections" address_symbol="__start_nrf_sections" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".fs_data"  inputsections="*(.fs_data*)" runin=".fs_data_run"/>
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".log_dynamic_data"  inputsections="*(SORT(.log_dynamic_data*))" runin=".log_dynamic_data_run"/>
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".log_filter_data"  inputsections="*(SORT(.log_filter_data*))" runin=".log_filter_data_run"/>
    <ProgramSection alignment="4" load="Yes" name=".dtors" />
    <ProgramSection alignment="4" load="Yes" name=".ctors" />
    <ProgramSection alignment="4" load="Yes" name=".rodata" size="0x4" />
    <ProgramSection alignment="4" load="Yes" name=".ARM.exidx" address_symbol="__exidx_start" end_symbol="__exidx_end" />
    <ProgramSection alignment="4" load="Yes" runin=".fast_run" name=".fast" />
    <ProgramSection alignment="4" load="Yes" runin=".data_run" name=".data" />
    <ProgramSection alignment="4" load="Yes" runin=".tdata_run" name=".tdata" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".mbr_params_page" address_symbol="__start_mbr_params_page" end_symbol="__stop_mbr_params_page" start = "0x0007E000" size="0x1000" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".bootloader_settings_page" address_symbol="__start_bootloader_settings_page" end_symbol="__stop_bootloader_settings_page" start = "0x0007F000" size="0x1000" />
  </MemorySegment>
  <MemorySegment name="RAM1" start="$(RAM_PH_START)" size="$(RAM_PH_SIZE)">
    <ProgramSection load="no" name=".reserved_ram" start="$(RAM_PH_START)" size="$(RAM_START)-$(RAM_PH_START)" />
    <ProgramSection alignment="0x100" load="No" name=".vectors_ram" start="$(RAM_START)" address_symbol="__app_ram_start__"/>
    <ProgramSection alignment="4" keep="Yes" load="No" name=".nrf_sections_run" address_symbol="__start_nrf_sections_run" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".fs_data_run" address_symbol="__start_fs_data" end_symbol="__stop_fs_data" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".log_dynamic_data_run" address_symbol="__start_log_dynamic_data" end_symbol="__stop_log_dynamic_data" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".log_filter_data_run" address_symbol="__start_log_filter_data" end_symbol="__stop_log_filter_data" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".nrf_sections_run_end" address_symbol="__end_nrf_sections_run" />
    <ProgramSection alignment="4" load="No" name=".fast_run" />
    <ProgramSection alignment="4" load="No" name=".data_run" />
    <ProgramSection alignment="4" load="No" name=".tdata_run" />
    <ProgramSection alignment="4" load="No" name=".bss" />
    <ProgramSection alignment="4" load="No" name=".tbss" />
    <ProgramSection alignment="4" load="No" name=".non_init" />
    <ProgramSection alignment="4" size="__HEAPSIZE__" load="No" name=".heap" />
    <ProgramSection alignment="8" size="__STACKSIZE__" load="No" place_from_segment_end="Yes" name=".stack"  address_symbol="__StackLimit" end_symbol="__StackTop"/>
    <ProgramSection alignment="8" size="__STACKSIZE_PROCESS__" load="No" name=".stack_process" />
  </MemorySegment>
  <MemorySegment name="uicr_bootloader_start_address" start="0x10001014" size="0x4">
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".uicr_bootloader_start_address" address_symbol="__start_uicr_bootloader_start_address" end_symbol="__stop_uicr_bootloader_start_address" start = "0x10001014" size="0x4" />
  </MemorySegment>
  <MemorySegment name="uicr_mbr_params_page" start="0x10001018" size="0x4">
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".uicr_mbr_params_page" address_symbol="__start_uicr_mbr_params_page" end_symbol="__stop_uicr_mbr_params_page" start = "0x10001018" size="0x4" />
  </MemorySegment>
</Root>

Firmware:

<!DOCTYPE Linker_Placement_File>
<Root name="Flash Section Placement">
  <MemorySegment name="FLASH" start="$(FLASH_PH_START)" size="$(FLASH_PH_SIZE)">
    <ProgramSection alignment="0x100" load="Yes" name=".vectors" start="$(FLASH_START)" />
    <ProgramSection alignment="4" load="Yes" name=".init" />
    <ProgramSection alignment="4" load="Yes" name=".init_rodata" />
    <ProgramSection alignment="4" load="Yes" name=".text" />
	<ProgramSection alignment="4" load="Yes" name="VERSIONSTRING_SECTION" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".pwr_mgmt_data" inputsections="*(SORT(.pwr_mgmt_data*))" address_symbol="__start_pwr_mgmt_data" end_symbol="__stop_pwr_mgmt_data" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".log_const_data" inputsections="*(SORT(.log_const_data*))" address_symbol="__start_log_const_data" end_symbol="__stop_log_const_data" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".log_backends" inputsections="*(SORT(.log_backends*))" address_symbol="__start_log_backends" end_symbol="__stop_log_backends" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".nrf_balloc" inputsections="*(.nrf_balloc*)" address_symbol="__start_nrf_balloc" end_symbol="__stop_nrf_balloc" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".nrf_sections" address_symbol="__start_nrf_sections" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".log_dynamic_data"  inputsections="*(SORT(.log_dynamic_data*))" runin=".log_dynamic_data_run"/>
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".log_filter_data"  inputsections="*(SORT(.log_filter_data*))" runin=".log_filter_data_run"/>
    <ProgramSection alignment="4" load="Yes" name=".dtors" />
    <ProgramSection alignment="4" load="Yes" name=".ctors" />
    <ProgramSection alignment="4" load="Yes" name=".rodata" />
    <ProgramSection alignment="4" load="Yes" name=".ARM.exidx" address_symbol="__exidx_start" end_symbol="__exidx_end" />
    <ProgramSection alignment="4" load="Yes" runin=".fast_run" name=".fast" />
    <ProgramSection alignment="4" load="Yes" runin=".data_run" name=".data" />
    <ProgramSection alignment="4" load="Yes" runin=".tdata_run" name=".tdata" />
  </MemorySegment>
  <MemorySegment name="RAM" start="$(RAM_PH_START)" size="$(RAM_PH_SIZE)">
    <ProgramSection alignment="0x100" load="No" name=".vectors_ram" start="$(RAM_START)" address_symbol="__app_ram_start__"/>
    <ProgramSection alignment="4" keep="Yes" load="No" name=".nrf_sections_run" address_symbol="__start_nrf_sections_run" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".log_dynamic_data_run" address_symbol="__start_log_dynamic_data" end_symbol="__stop_log_dynamic_data" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".log_filter_data_run" address_symbol="__start_log_filter_data" end_symbol="__stop_log_filter_data" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".nrf_sections_run_end" address_symbol="__end_nrf_sections_run" />
    <ProgramSection alignment="4" load="No" name=".fast_run" />
    <ProgramSection alignment="4" load="No" name=".data_run" />
    <ProgramSection alignment="4" load="No" name=".tdata_run" />
    <ProgramSection alignment="4" load="No" name=".bss" />
    <ProgramSection alignment="4" load="No" name=".tbss" />
    <ProgramSection alignment="4" load="No" name=".non_init" />
    <ProgramSection alignment="4" size="__HEAPSIZE__" load="No" name=".heap" />
    <ProgramSection alignment="8" size="__STACKSIZE__" load="No" place_from_segment_end="Yes" name=".stack"  address_symbol="__StackLimit" end_symbol="__StackTop"/>
    <ProgramSection alignment="8" size="__STACKSIZE_PROCESS__" load="No" name=".stack_process" />
  </MemorySegment>
  <MemorySegment name="ot_flash_data" start="0x7E000" size="0x2000">
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".ot_flash_data" address_symbol="__start_ot_flash_data" end_symbol="__stop_ot_flash_data" start = "0x7E000" size="0x2000" />
  </MemorySegment>
</Root>

Ans also i tried with FLASH_START=74000 but throwing error while flashing bootloader.

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Einar Thorsrud — Mon, 08 Nov 2021 10:20:48 GMT

Hi,

The second screenshot is what is most relevant here. Here you have starta address (FLASH_START) at 0xf4000, and this is way outside of the physical flash of the nRF52833 (512 kB flash). You must set this to something more sensible, something like 0x74000.

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Akib — Mon, 08 Nov 2021 09:52:21 GMT

Hi Einar,

The memory layout is FLASH1 RX 0x0 0x80000;RAM1 RWX 0x20000000 0x40000;mbr_params_page RX 0x000FE000 0x1000;bootloader_settings_page RX 0x000FF000 0x1000;uicr_bootloader_start_address RX 0x10001014 0x4;uicr_mbr_params_page RX 0x10001018 0x4.

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Einar Thorsrud — Wed, 03 Nov 2021 13:53:09 GMT

Hi,

[quote user="Akib "]I have disable the nrf_crypto frontend and enable crypto backend.[/quote]

This is not exactly right. You still need nrf_crypto as this is used by the bootloader to validate upgrade images, so NRF_CRYPTO_ENABLED must be 1. However, you need to disable the CC310 BL backend which is used by the bootloader projects for nRF52840, so set NRF_CRYPTO_BACKEND_CC310_BL_ENABLED to 0 in sdk_config.h. Now, you need to enable other backends. I suggest you refer to an example bootloader project for any non-nRF52840 device. There you can see that you need to set NRF_CRYPTO_BACKEND_MICRO_ECC_ENABLED to 1 and NRF_CRYPTO_BACKEND_MICRO_ECC_ECC_SECP256R1_ENABLED to 1. You also need to set NRF_CRYPTO_BACKEND_NRF_SW_ENABLED to 1 and NRF_CRYPTO_BACKEND_NRF_SW_HASH_SHA256_ENABLED to 1.

[quote user="Akib "]Then got some error related nrf_crypto function witch is available in nrf_dfu_validation.c.[/quote]

That is because you disabled nrf_crypto in sdk_config.h, and that way these functions that yuo rely on are removed by the preprocessor. This should be OK after you fix your sdk_config.h as described.

[quote user="Akib "]As of now i have commented those functions just for error removal and i am trying to flash the code in nrf52833 but while flashing we getting some error too.[/quote]

We need to look at your memory layout in order to understand this. Perhaps the bootloader start address is wrong and overlaps with the SoftDevice? Which start address have you specified for the bootloader?

[quote user="Akib "]This error is related to flash and RAM?[/quote]

This is related to flash.

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Akib — Wed, 03 Nov 2021 12:36:09 GMT

Hi Einar,

I have disable the nrf_crypto frontend and enable crypto backend.

Then got some error related nrf_crypto function witch is available in nrf_dfu_validation.c.

As of now i have commented those functions just for error removal and i am trying to flash the code in nrf52833 but while flashing we getting some error too.

This error is related to flash and RAM?

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Einar Thorsrud — Fri, 29 Oct 2021 07:33:31 GMT

Hi Akib,

The nRF52833 does not have the CryptoCell peripheral, so you must modify sdk_config.h so that it uses a different crypto backend. See Configuring nrf_crypto frontend and backends.

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Akib — Fri, 29 Oct 2021 07:10:41 GMT

Hi Einar,

Thanks for the link.

I have followed the the steps and changed Preprocessor definitions BOARD_PCA10056 to PCA10100 and NRF52840_XXAA to NRF52833_XXAA. Then i am getting some error related to cc310_bl_backend.

BR,

Akib

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Einar Thorsrud — Thu, 21 Oct 2021 12:12:53 GMT

Hi Akib,

You can use examples for nRF52840 on nRF52833 with minor modifications as long as the SDK is new enough to support nRF52833. See this post for details.

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Akib — Thu, 21 Oct 2021 11:39:31 GMT

Hi Olaf,

Thanks for the reply.

I checked the least release 17.1.0 and 16.0.0 in both of the documents it's mention CDC ACM USB Bootloader only for nRF52840.

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/sdk_app_serial_dfu_bootloader.html

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.1.0/sdk_app_serial_dfu_bootloader.html

BR,

Akib

RE: nRF52833: CDC ACM USB Bootloader example is not available.

Olaf — Thu, 21 Oct 2021 05:16:13 GMT

First of all you need at least SDK16.0.0:

From the release note:

nRF5 SDK v16.0.0
------------------------
Release Date: October, 2019

Highlights:

- Added support for a new chip: nRF52833

In the /SDK_ROOT/config/nrf52833/ses directory you will find a sample project for SES to start from.

Check also the paragraph on using SDK with other boards.


BR

Olaf