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Error when trying to create DFU .zip packet

mej7000

I have been following the "Getting started with Nordic's Secure DFU bootloader, a step by step guide". I believe I may have compiled and loaded a DFU bootloader to the nRF52840 using nRF5_SDK_17.0.2 and pca10056_s140_ble (on an Adafruit nRF52840 Feather). Programmed with a Segger Jlink EDU.

C:\Users\mike\Downloads\nRF5_SDK_17.0.2_d674dde\nRF5_SDK_17.0.2_d674dde\examples\dfu\secure_bootloader\pca10056_s140_ble\ses\Output\Release\Exe\secure_bootloader_ble_s140_pca10056.hex

I am now trying to create a DFU .zip packet, however I am getting the following error below. My understanding is that is a python error trying to compare an INT to a "NoneType" returned type, but I have no idea how to fix this... Any help/advice is appreciated.

My output:

03/12/2021 05:20 AM <DIR> .
03/12/2021 05:20 AM <DIR> ..
03/12/2021 05:15 AM 599,172 blinky_pca10056.elf
03/12/2021 05:15 AM 5,006 blinky_pca10056.hex
03/12/2021 05:15 AM 411,488 blinky_pca10056.map
03/12/2021 05:20 AM 11,933,953 nrfutil.exe
03/11/2021 04:10 PM 227 private.key
5 File(s) 12,949,846 bytes
2 Dir(s) 126,304,157,696 bytes free

C:\Users\mike\Downloads\nRF5_SDK_17.0.2_d674dde\nRF5_SDK_17.0.2_d674dde\examples\peripheral\blinky\pca10056\blank\ses\Output\Release\Exe>nrfutil pkg generate --hw-version 52 --application-version 1 --application blinky_pca10056.hex --sd-req 0x98 --key-file private.key app_dfu_package.zip
Traceback (most recent call last):
File "nordicsemi\__main__.py", line 1537, in <module>
File "site-packages\click\core.py", line 764, in __call__
File "site-packages\click\core.py", line 717, in main
File "site-packages\click\core.py", line 1137, in invoke
File "site-packages\click\core.py", line 1137, in invoke
File "site-packages\click\core.py", line 956, in invoke
File "site-packages\click\core.py", line 555, in invoke
File "nordicsemi\__main__.py", line 881, in generate
File "nordicsemi\dfu\package.py", line 414, in generate_package
File "nordicsemi\dfu\package.py", line 615, in normalize_firmware_to_bin
File "nordicsemi\dfu\nrfhex.py", line 181, in tobinfile
File "nordicsemi\dfu\nrfhex.py", line 135, in minaddr
TypeError: '>' not supported between instances of 'NoneType' and 'int'
[23004] Failed to execute script __main__

If these help...

secure_bootloader_ble_s140_pca10056.hex4034.blinky_pca10056.hex1537.private.zip

  • 0

    Hello,

    The reason for the error is that the blinky "blank" project is configured to start at address 0x0 in flash and thus overlap with the Softdevice and MBR section (see Memory layout). You could make it work by modifying the blinky project to start above the Softdevice, or you can try with one of the BLE examples that are configured to run with the Softdevice present (e.g. \examples\ble_peripheral\ble_app_hrs)

    Best regards,

    Vidar

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