RE: how to generate update files (.dat .bin) without zipping them?

TylerD — Tue, 03 Mar 2020 13:20:03 GMT

Thanks!

I had a look at the internal workings of the nrfutil code and it uses a temporary working directory where the *.dat / *.bin files are stored. At the end of the process, the temporary directory is removed. on Windows, the temp folder is created in randomly named folder such as:

C:\Users\<username>\AppData\Local\Temp\nrf_dfu_pkg__xoaa8t8

I was able to hack the code so that the unpacked files are available. It's not pretty but it works at least somehow and requires only one additional line of code. This is inserted in package.py, at the end of generate_package function:

        # Package the work_dir to a zip file
        Package.create_zip_package(self.work_dir, filename)

        # ADDED: copy the entire content of temp directory to the working directory...
        shutil.copytree(self.work_dir, "./unpacked/")
        
        # Delete the temporary directory
        self.rm_work_dir(preserve_work_dir)

The idea is that I simply copy the entire temp directory to the same folder where I'm running nrfutil. It's not a clean solution, for example if the "unpacked" directory already exists then copytree will fail. In any case, this may be helpful if someone else is trying to get access to the unpacked files.

RE: how to generate update files (.dat .bin) without zipping them?

Hung Bui — Tue, 03 Mar 2020 13:01:17 GMT

Hi Jaakko,

Thanks for your report. I will report this request internally.

RE: how to generate update files (.dat .bin) without zipping them?

TylerD — Tue, 03 Mar 2020 07:36:35 GMT

Just found out that the nrfutil is available in source code at https://github.com/NordicSemiconductor/pc-nrfutil

So I can tweak the tool myself and make it spit out also the dat/bin files without zipping. Maybe it would be useful to have this as a standard feature in the tool?

how to generate update files (*.dat *.bin) without zipping them?

RE: how to generate update files (*.dat *.bin) without zipping them?

RE: how to generate update files (*.dat *.bin) without zipping them?

RE: how to generate update files (*.dat *.bin) without zipping them?

how to generate update files (.dat .bin) without zipping them?

RE: how to generate update files (.dat .bin) without zipping them?

RE: how to generate update files (.dat .bin) without zipping them?

RE: how to generate update files (.dat .bin) without zipping them?