How to use M95P32 to replace the current external flash

[SunHuang]

Hi,

We're going to use external SPI EEPROM, but which is working on the DK board's MX25R64

How to configure MCUboot&OTA using external SPI EEPROM memory?

I expect to get all the configuration processes and files that must be modified, such as overlay and conf modification methods，Thanks！

OS: windows 10
Hardware used: nrf5340 dk
example:C:\ncs\v2.4.1\nrf\samples\matter\lock

[Sigurd Hellesvik]

Hi,

First to check: It is possible to use external flash with either QSPI or SPI.
And you want SPI, right?

Regards,
Sigurd Hellesvik

[SunHuang]

Yes, we want to use SPI interface.

[Sigurd Hellesvik]

When you use MCUboot in the nRF Connect SDK, the Partition Manager is enabled, and then you must enable external flash for the Partition Manager.

For our nRF5340DK, external flash is by default configured for QSPI, so next we need to configure external flash for SPI. For an example on how this can be done, see this nrf9160dk_nrf9160_ns.overlay.

We also need to set the same configurations for the MCUboot child image, se for example child_image/mcuboot/boards/nrf5340dk_nrf5340_cpuapp.overlay or child_image/mcuboot.overlay.
Lastly, we need to set some configurations for external flash for the child image as well. Such as nrf9160dk_nrf9160_ns.conf, for both application and child image.

Try this, and let me know if you face any issues.

[SunHuang]

So far I have successfully used the SPI interface,But what I need is to use M95P32 as external flash.

Can you directly provide the setting method?

[Sigurd Hellesvik]

SunHuang said:

Can you directly provide the setting method?

No.

We can help you get to your goals, as well as debug issues.
But we do not provide on-demand code development services.

[SunHuang]

Hi Sigurd

Anyway, QSPI is currently disabled and M95P32 control via SPI has been completed,

is MCU BOOT section able to describe clearly how to implement this?