sample nCS code to evaluate DFU-OTA on nRF52833

[Ubaid_M]

Hi,

I am working on an application to transfer firmware file via BLE-GATT to nRF52833. 
Can you kindly suggest any sample code for me to evaluate.

Thanks,

Ubaid

[Ubaid_M]

Hello Edvin,

Edvin said:

ct using the guide

With the project I build from your suggested guide:

I got the following three build/output files at build paths:

1. build/zephyr/zephyr.hex: only application

2. build/mcuboot/zephyr/zephyr.hex: only mcuboot

3. build/zephyr/merged.hex: mcuboot+application

Out of these three, I am to understand If I flash the first build file, it will flash only application.
The second build file is for mcuboot project build.
The third build file has both mcuboot+application which can be flashed.

I just need to know how to flash the second build file, that is at "build/mcuboot/zephyr/zephyr.hex"
Please suggest..?!

Thanks

[Edvin]

So you want to know how to flash a .hex file?

You can use nRF Command Line Tools directly. You have already installed it, since West (part of nRF Connect SDK) uses it. Use the command:

nrfjprog --program build\mcuboot\zephyr\zephyr.hex --verify --sectorerase

Best regards,

Edvin

[Ubaid_M]

Thank you Edvin,

Is it fine if this ticket remains open..?

I could use your help for my DFU development.

Thanks,

[Edvin]

I will leave it open.

BR,

Edvin

[Ubaid_M]

Hello Edvin,

I have a requirement to map SLOT-1 into external serial flash memory & fetch it through SPI interface, when mcuboot tries to swap SLOT-0 & SLOT-1.

Under the path "bootloader\mcuboot\boot\zephyr\boards" I could see that for nrf52840, some  dts are provided for QSPI interface with serial flash like:

/*
 * Copyright (c) 2020 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/delete-node/ &boot_partition;
/delete-node/ &slot0_partition;
/delete-node/ &slot1_partition;
/delete-node/ &scratch_partition;

&flash0 {
	partitions {
		boot_partition: partition@0 {
			label = "mcuboot";
			reg = <0x000000000 0x00010000>;
		};
		slot0_partition: partition@10000 {
			label = "image-0";
			reg = <0x000010000 0x0000e8000>;
		};
	};
};

&mx25r64 {
	partitions {
		compatible = "fixed-partitions";
		#address-cells = <1>;
		#size-cells = <1>;

		slot1_partition: partition@0 {
			label = "image-1";
			reg = <0x000000000 0x0000e8000>;
		};
	};
};

But I couldn't understand where the APIs are present for swapping..?

I need to understand where do I make changes in mcuboot source code to make SPI access to SLOT-1 on external flash..?

Or will this work just with configurations..?

Kindly suggest or point me to understand with the changes.

Thanks,