nRF52840 call DFU from own application

RE: nRF52840 call DFU from own application

user14926 — Wed, 25 May 2022 15:30:40 GMT

Note that the documentation in "Using external flash memory partitions" is applicable for nRF Connect SDK/MCUboot only. For nRF5 SDK, you will have to write the support for external flash yourself, as we do not have any examples of this in the bootloader.

RE: nRF52840 call DFU from own application

user103636 — Wed, 25 May 2022 13:16:27 GMT

very thanks.

Ok ok, I work with:

nRF5 SDK v17.1.0

I check code for bootloader and "Using external flash memory partitions", after I try to merge it..

fpol

RE: nRF52840 call DFU from own application

user14926 — Wed, 25 May 2022 12:25:28 GMT

Segger Embedded Studio can be used both with nRF5 SDK and nRF Connect SDK, see:

RE: nRF52840 call DFU from own application

user103636 — Wed, 25 May 2022 11:19:55 GMT

I use Segger Embedded Studio

and then IDE: Integrated study SEGGER for ARM
Version 5.42a Build 2021040600.45790
Windows x64

Is nRF5 SDK?

Tnks

RE: nRF52840 call DFU from own application

user14926 — Wed, 25 May 2022 10:14:21 GMT

Hi,

I depends on what SDK you are using.

For nRF5 SDK, the bootloader example projects can be found in examples\dfu\secure_bootloader. The source code of the bootloader/DFU modules are found in components\libraries\bootloader.

For nRF Connect SDK, the bootloader source code can be found in https://github.com/nrfconnect/sdk-mcuboot

Best regards,
Jørgen

RE: nRF52840 call DFU from own application

user103636 — Wed, 25 May 2022 08:23:47 GMT

Hi Jorgen,

any news?

How to proceed?

Very thanks.

fpol

RE: nRF52840 call DFU from own application

user103636 — Tue, 24 May 2022 14:50:33 GMT

Hi Jørgen.

Thank you so much for your answer.

I use HW: NRF52840-DK

and then IDE: Integrated study SEGGER for ARM
Version 5.42a Build 2021040600.45790
Windows x64

Can you help me understand where to find the bootloader source code and how to edit?

Thank you in advance.

fpol

RE: nRF52840 call DFU from own application

user14926 — Tue, 24 May 2022 14:29:33 GMT

Hi,

We do not have any examples showing how to do this, but it should be possible if you rewrite the bootloader to check the external flash for a valid firmware to be activated.

Are you using nRF5 SDK, or nRF Connect SDK? The latter have support for external flash, which can be used for firmware updates (see Using external flash memory partitions).

Best regards,
Jørgen

RE: nRF52840 call DFU from own application

user103636 — Tue, 24 May 2022 09:47:15 GMT

HI thanks for the reply.
So, I don't use neither UART nor BLE, I preload an external flash and then from my application I have to take files and overwrite the nRF52840 in flash.

fpol

RE: nRF52840 call DFU from own application

user116408 — Tue, 24 May 2022 09:44:15 GMT

You Update firmware via BLE or Serial?