How to perform an OTA update on the nRF5340 using a PC

[mike_yang]

Hi,

Currently, I know that OTA updates for the nRF5340 can be performed using Device Manager and the nRF Connect mobile application. However, if using a PC, is it possible to achieve the same functionality via the command line?

Thanks!!

Mike

[mike_yang]

Hi Vidar,

Based on your suggestion, I extracted dfu_application.zip and used the .bin file inside to perform the update, but it seems that I am encountering a similar issue

C:\Users\user\Desktop\Mike\p1_v1.1.2_32M_12pF_dfu_application>smpmgr --ble E8:B8:C3:0E:CC:23 image upload application.signed.bin
[01:29:55] ERROR    Inspection of FW image failed - image_management:187                                                             image_management.py:187
                    ╭───────────────────────────────────── Traceback (most recent call last) ──────────────────────────────────────╮
                    │ C:\Users\user\AppData\Local\Programs\Python\Python312\Lib\site-packages\smpmgr\image_management.py:184  │
                    │ in upload                                                                                                    │
                    │                                                                                                              │
                    │   181 │   """Upload a FW image."""                                                                           │
                    │   182 │                                                                                                      │
                    │   183 │   try:                                                                                               │
                    │ ❱ 184 │   │   image_info = ImageInfo.load_file(str(file))                                                    │
                    │   185 │   │   logger.info(str(image_info))                                                                   │
                    │   186 │   except Exception:                                                                                  │
                    │   187 │   │   logger.exception("Inspection of FW image failed")                                              │
                    │                                                                                                              │
                    │ C:\Users\user\AppData\Local\Programs\Python\Python312\Lib\site-packages\smpclient\mcuboot.py:331 in     │
                    │ load_file                                                                                                    │
                    │                                                                                                              │
                    │   328 │   │   tlv_offset = image_header.hdr_size + image_header.img_size                                     │
                    │   329 │   │                                                                                                  │
                    │   330 │   │   f.seek(tlv_offset)  # move to the start of the TLV area                                        │
                    │ ❱ 331 │   │   tlv_info = ImageTLVInfo.load_from(f)                                                           │
                    │   332 │   │                                                                                                  │
                    │   333 │   │   tlvs: list[ImageTLVValue] = []                                                                 │
                    │   334 │   │   while f.tell() < tlv_offset + tlv_info.tlv_tot:                                                │
                    │                                                                                                              │
                    │ C:\Users\user\AppData\Local\Programs\Python\Python312\Lib\site-packages\smpclient\mcuboot.py:255 in     │
                    │ load_from                                                                                                    │
                    │                                                                                                              │
                    │   252 │   @staticmethod                                                                                      │
                    │   253 │   def load_from(file: BytesIO | BufferedReader) -> 'ImageTLVInfo':                                   │
                    │   254 │   │   """Load an `ImageTLVInfo` from a file."""                                                      │
                    │ ❱ 255 │   │   return ImageTLVInfo.loads(file.read(IMAGE_TLV_INFO_STRUCT.size))                               │
                    │   256                                                                                                        │
                    │   257                                                                                                        │
                    │   258 @dataclass(frozen=True)                                                                                │
                    │                                                                                                              │
                    │ C:\Users\user\AppData\Local\Programs\Python\Python312\Lib\site-packages\smpclient\mcuboot.py:250 in     │
                    │ loads                                                                                                        │
                    │                                                                                                              │
                    │   247 │   @staticmethod                                                                                      │
                    │   248 │   def loads(data: bytes) -> 'ImageTLVInfo':                                                          │
                    │   249 │   │   """Load an `ImageTLVInfo` from bytes."""                                                       │
                    │ ❱ 250 │   │   return ImageTLVInfo(*IMAGE_TLV_INFO_STRUCT.unpack(data))                                       │
                    │   251 │                                                                                                      │
                    │   252 │   @staticmethod                                                                                      │
                    │   253 │   def load_from(file: BytesIO | BufferedReader) -> 'ImageTLVInfo':                                   │
                    │                                                                                                              │
                    │ C:\Users\user\AppData\Local\Programs\Python\Python312\Lib\site-packages\pydantic\_internal\_dataclasses │
                    │ .py:121 in __init__                                                                                          │
                    │                                                                                                              │
                    │   118 │   def __init__(__dataclass_self__: PydanticDataclass, *args: Any, **kwargs: Any) ->                  │
                    │       None:                                                                                                  │
                    │   119 │   │   __tracebackhide__ = True                                                                       │
                    │   120 │   │   s = __dataclass_self__                                                                         │
                    │ ❱ 121 │   │   s.__pydantic_validator__.validate_python(ArgsKwargs(args, kwargs),                             │
                    │       self_instance=s)                                                                                       │
                    │   122 │                                                                                                      │
                    │   123 │   __init__.__qualname__ = f'{cls.__qualname__}.__init__'                                             │
                    │   124                                                                                                        │
                    │                                                                                                              │
                    │ C:\Users\user\AppData\Local\Programs\Python\Python312\Lib\site-packages\smpclient\mcuboot.py:243 in     │
                    │ __post_init__                                                                                                │
                    │                                                                                                              │
                    │   240 │   def __post_init__(self) -> None:                                                                   │
                    │   241 │   │   """Do initial validation of the header."""                                                     │
                    │   242 │   │   if self.magic != IMAGE_TLV_INFO_MAGIC:                                                         │
                    │ ❱ 243 │   │   │   raise MCUBootImageError(                                                                   │
                    │   244 │   │   │   │   f"TLV info magic is {hex(self.magic)}, expected                                        │
                    │       {hex(IMAGE_TLV_INFO_MAGIC)}"                                                                           │
                    │   245 │   │   │   )                                                                                          │
                    │   246                                                                                                        │
                    ╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
                    MCUBootImageError: TLV info magic is 0x6908, expected 0x6907

C:\Users\user\Desktop\Mike\p1_v1.1.2_32M_12pF_dfu_application>

Thanks!!
Mike

[Vidar Berg]

Hi Mike,

Unfortunately, it looks like the script does not support handling of protected TLVs.

(https://docs.nordicsemi.com/bundle/ncs-latest/page/mcuboot/design.html)

Note: you can use the imgtool command "dumpinfo" to parse the TLVs in your application.signed.bin file: "imgtool dumpinfo application.signed.bin".

Is it an option to use AuTerm which is a GUI app (https://docs.nordicsemi.com/bundle/ncs-latest/page/zephyr/services/device_mgmt/mcumgr.html#toolslibraries)? Another option is to try this cli tool here https://github.com/thedjnK/qtmgmt

Best regards,

Vidar

[mike_yang]

Hi Vidar,

I’m not sure how to run AuTerm using the command line. From what I understand, if command-line usage is required, it seems that qtmgmt needs to be used instead.

However, I’m unable to download a pre-built executable of qtmgmt.

I would like to ask whether you could provide an example of commands that have been successfully executed using this tool, so that I can use them for testing purposes.

Thanks!!
Mike

[Vidar Berg]

Hi Mike,

AuTerm has a GUI only and cannot be used from the command line. That is why I mentioned qtmgmt, but this must be built from source it seems. I have not tried this tool myself. Internally for automated testing. we are using the mcumgr client script on linux  

Best regards,

Vidar

[mike_yang]

Hi Vidar,

So on a Linux PC, your team has tested that using mcumgr to update the nRF5340 works reliably. However, mcumgr cannot be used on a Windows PC. Is my understanding correct?

Thanks!!
Mike