nRF52840 DK, "Matter" examples, flash overflow (how to switch to work with external flash)

[Stas Jis]

Hi,
I use nRF52840 DK (SDK 2.5.0), all my attempts to raise examples for "Matter", were not crowned with success (for example projects: Light Bulb, Light switch).
Everywhere during assembly the same problem, flash memory overflow: region FLASH' overflowed by 1966 bytes (and this is regardless of which of the configuration files I use prj.conf or prj_release.conf + Optimization level: Optimize for size).

I also tried to reconfigure the project to use external memory for work (for this case, those examples), but obviously my knowledge is not enough for this.

1) How can I correctly reconfigure the project to use external memory instead of Flash?
2) I know that since SDK 2.8.0 you have removed Zigbee support for nRF52840. What about "Matter"?
I added changes to the .conf file like this:

CONFIG_FLASH=y
CONFIG_SPI=y
CONFIG_NRFX_QSPI=y
CONFIG_NORDIC_QSPI_NOR=y
CONFIG_FLASH_PAGE_LAYOUT=y
CONFIG_FLASH_MAP=y

and also included a file like pm_static.yml in the project root:
partitions:
config_partition:
address: 0x12000000
size: 0x100000
region: qspi_flash

firmware_partition:
address: 0x12100000
size: 0x700000
region: qspi_flash

But this did not give any result, when building the project still tries to work with a regular flash, and not an external one.

I have attached the current .conf, .overlay, .dts file.



175276.prj.conf4024.nrf52840dk_nrf52840.overlay6180.nrf52840dk_nrf52840.dts

[Sigurd Hellesvik]

Hi,

For comparison: How have your experiences with our out-of-the-box Matter samples been?

Regards,
Sigurd Hellesvik

[Stas Jis]

Hi,
I have no impressions of your Matter samples, none of the examples for SDK 2.5.0 cannot be build.
That's why I opened this topic.
Please read the details of the problem above, if any other information is needed, please let me know.

[Sigurd Hellesvik]

Our Matter samples in v2.5.0 should build out of the box. Let us try to find out why this does not work for you.

Can you describe what you do to build the lock sample?

[Stas Jis]

A clean example of Light_switch (without modifications) with prj.conf:



Sorry I couldn't attach the error text to you (only a screenshot), I get an internal error about not being able to do this.

For prj_release.conf we have the same errors.

[Sigurd Hellesvik]

Sigurd Hellesvik said:

Can you describe what you do to build the lock sample?

I mean: the steps you take.

[Stas Jis]

Steps (Nothing special):
1) Ceate a new application (Copy a sample);
2) Adding the build configuration for nRF52840dk, optimize for size with prj.conf (after attempt to build, I see that was include .overlay file too);


3) Try tot execute Pristine build or just build (the result is the same).

[Stas Jis]

We additionally checked other versions of SDK 2.8.0 and 2.9.0 and see the same problem. But it seems that the problem is purely local since it relates to a specific computer.
When downloading SDK version 2.8.0 and 2.9.0 (still downloaded via nRF Connect desktop) on other computers, examples with Matter is built out of the box without errors with `FLASH' overflowed.

It is not clear what to do with this, the error is clearly general, since it is reproduced identically on three versions of the SDK (2.5.0, 2.8.0, 2.9.0).