The NVS in the nCS erases the contents in DFU, is this a specification? or bug?

RE: The NVS in the nCS erases the contents in DFU, is this a specification? or bug?

Amanda Hsieh — Thu, 21 Dec 2023 15:02:01 GMT

Hi,

If you are using the nRF Connect app, there is an equivalent settings in Settings/Mcu Manager options/Erase application settings.

Could you please check if that is the cause?

If it doesn't help. Could you try to set CONFIG_IMG_ERASE_PROGRESSIVELY to see if it differs from this?

I will start the holiday tomorrow and will not reply until January. 09.2024. If this case is urgent to support. Please create a new support case.

Merry Christmas & Happy New Year.

Amanda H.

RE: The NVS in the nCS erases the contents in DFU, is this a specification? or bug?

Yoshihiro Goto — Thu, 21 Dec 2023 00:23:23 GMT

Hi,

I am using the nRF Connect for mobile app. is it common to use the nRF Connect Device Manager app?

By the way, is there a setting equivalent to that function in nRF Connect for mobile?

RE: The NVS in the nCS erases the contents in DFU, is this a specification? or bug?

Amanda Hsieh — Wed, 20 Dec 2023 14:03:24 GMT

If you're doing DFU from nRF Connect Device Manager app, there's a setting "erase application storage", enabled by default.

Could you check that?

RE: The NVS in the nCS erases the contents in DFU, is this a specification? or bug?

Yoshihiro Goto — Tue, 19 Dec 2023 05:18:36 GMT

[quote userid="77782" url="~/f/nordic-q-a/106301/the-nvs-in-the-ncs-erases-the-contents-in-dfu-is-this-a-specification-or-bug/460902"]Where do you store the values? Is it in NVS?[/quote]

I'm sure it should be...I am using nvs_write API.

>nvs_write(&fs, NVS_ID, &xxx, sizeof(xxx));

RE: The NVS in the nCS erases the contents in DFU, is this a specification? or bug?

Amanda Hsieh — Mon, 18 Dec 2023 16:38:45 GMT

Where do you store the values? Is it in NVS?

RE: The NVS in the nCS erases the contents in DFU, is this a specification? or bug?

Yoshihiro Goto — Mon, 18 Dec 2023 01:52:57 GMT

Hi,

I actually verified this. And I also confirmed that the following message appears during the build.

Partition 'mcuboot' is not included in the dynamic resolving since it is statically defined.
Partition 'mcuboot_pad' is not included in the dynamic resolving since it is statically defined.
Partition 'mcuboot_primary' is not included in the dynamic resolving since it is statically defined.
Partition 'mcuboot_primary_app' is not included in the dynamic resolving since it is statically defined.
Partition 'mcuboot_secondary' is not included in the dynamic resolving since it is statically defined.
Partition 'settings_storage' is not included in the dynamic resolving since it is statically defined.
-- Configuring done

But...

Stored values in flash memory are still lost by DFU. Am I missing some setting?

RE: The NVS in the nCS erases the contents in DFU, is this a specification? or bug?

Yoshihiro Goto — Thu, 07 Dec 2023 01:22:34 GMT

Hi,

Thank you for your advice.

Best Regards,
Yoshihiro Goto

RE: The NVS in the nCS erases the contents in DFU, is this a specification? or bug?

Amanda Hsieh — Tue, 05 Dec 2023 14:12:16 GMT

Hi,

If you have multi-image build, it will automatically enable the Partition Manager. In your case, you are using DFU. So it should already enable MCUBoot, and then the Partition Manager would be enabled automatically.
Just build the project normally and then copy the partitions.yml from the build directory into the app root directory and name it pm_static.yml.

-Amanda H.

RE: The NVS in the nCS erases the contents in DFU, is this a specification? or bug?

Yoshihiro Goto — Tue, 05 Dec 2023 07:20:51 GMT

Hi,

Thanks for the answer. I understand that I am missing a setting. I also read the link.

But...what exactly do I should to do?
I turned on CONFIG_PARTITION_MANAGER, but that causes a build error. (What does read-only mean?)

C:/ncs/v2.4.2/nrf/subsys/partition_manager/flash_map_partition_manager.c:12:10: fatal error: pm_config.h: No such file or directory
12 | #include <pm_config.h>

I can see that there is a partition.yml file in the existing build folder, does that mean I should move it to the root folder of the project?

RE: The NVS in the nCS erases the contents in DFU, is this a specification? or bug?

Amanda Hsieh — Mon, 04 Dec 2023 15:13:08 GMT

Hi,

Please use the same pm_static.yml for FOTA. See Static partition requirement for DFU.

Regards,
Amanda H.