Raytac, Nordic, nRF51, nRF52, Bluetooth, BT4.0, BT4.1, BT4.2, BT5, BLE, Module, nRF51822, nRF51422, nRF52832, nRF52840, QDID, FCC, IC, KCC, SRRC, Telec,

Secure DFU OTA for nRF52832 solution modules: Creating hex/zip file for implementation – Part 2(Combining/merging built files)

2024 年 09 月 06 日2024 年 09 月 19 日由Raytac Corporation撰寫發表留言

Following up – Part 1: Bootloader & Application (Click for article link),

We will be focusing on:

Part 2: Combining & merging built files

in this article.

IC: nRF52832
DK: PCA10040 (for nRF52832)
SDK: 16.0.0
Softdevice: s132_nrf52_7.0.1_softdevice.hex
IDE: Keil C
PC: Win 10

Part 2: Combining & merging built files

Step 1. Execute the combine batch file in bootloader (nrf52832_bootloader_setting_merge.bat) and generate file of nrf52832_bootloader_secure_combin_settings.hex :

@echo off
title = [ J-Link Tool ] %CD%
set nrfDir=C:\Program Files (x86)\Nordic Semiconductor\nrf5x\bin
set BS= nrf52832_bootloader_secure_settings.hex
set BL= nrf52832_xxaa_s132.hex
set BSBLCombind= nrf52832_bootloader_secure_combin_settings.hex
set path=%nrfDir%;%path%
pause
echo ———–merge image file——————-
mergehex.exe -m %BS% %BL% -o %BSBLCombind%
pause

Step 2. Create a Final.hex file by 3-in-1 batch file(nrf52832_3in1_merge.bat)
※Note : This hex file is created for the production line to pre-load firmware into modules prior to shipment.

@echo off
title = [ J-Link Tool ] %CD%
set nrfDir=C:UsersuserDesktopNordic BLEnRF5_merge toolsnRF52 bin
set SD= s140_nrf52_7.2.0_softdevice.hex
set BLT= nrf52832_bootloader_secure_combin_settings.hex
set APP= nrf52832_xxaa.hex
set SD_BLT=SD_BLT.hex
set Finalfile=Final.hex
set path=%nrfDir%;%path%
pause
echo ———–merge image file——————-
mergehex.exe -m %SD% %BLT% -o %SD_BLT%
pause
mergehex.exe -m %SD_BLT% %APP% -o %Finalfile%
pause

Step 3. Create a DFU(OTA).zip file of nrf52832_xxaa.zip
※Note : This zip file is created for end device DFU(OTA) implementation.

nrfutil pkg generate –hw-version 52 –sd-req 0xCB –application-version 0xFF –application
nrf52832_xxaa.hex –key-file private.pem nrf52832_xxaa.zip

※Note :
The “0xCB" appeared in the above DOS code(in red font) is the FWID(Firmware ID) for s140_nrf52_7.2.0_softdevice.hex;
FWID can be found from the soft device documents on the Nordic website.

Step 4: Run DFU OTA (On mobile in this example)

4A. Install the nRF Connect APP on mobile, with DFU OTA file: nrf52832_xxaa.zip. (Download link)

4B. Send nrf52832_xxaa.zip via email to mobile device after combination is done on PC, then download it.

4C. Open nRF Connect APP and run connection;

4D. Execute DFU and select “Distribution packet(ZIP)", thus starting the DFU OTA process.

4E. Start DFU OTA → exit the APP after DFU OTA is completed → restart the mobile device.

Secure DFU OTA for nRF52832 solution modules: Guide to create hex/zip file for implementation
Detailed links of articles:
Part 1: Bootloader & Application (Click for article link)
Part 2: Combining & merging built files

Technical guidelines provided by R&D Manager: Mr. MW Lee
Edited by Sales Manager: Ms. Mandy Chao

Raytac Corporation 勁達國際電子股份有限公司
Raytac Corporation: A Bluetooth, Wi-Fi, and LoRa Module Maker based on
Nordic nRF54; nRF53: nRF52; nRF51; nRF7002
Semtech Specification: SX1262

Bluetooth Specification: BT5.4 ; BT5.3; BT5.2.
Wi-Fi Specification: Wi-Fi 6
LoRa Specification: LoRaWAN

All products are FCC/IC/CE/Telec/KC/RCM/SRRC/NCC Pre-Certified.
http://www.raytac.com
email: sales@raytac.com
Tel: +886-2-3234-0208

Secure DFU OTA for nRF52832 solution modules: Guide to create hex/zip file for implementation – Part 1(Bootloader & Application)

2024 年 08 月 28 日2024 年 09 月 19 日由Raytac Corporation撰寫發表留言

Here are the guidelines for users to implement Secure DFU OTA(over-the-air) while using nRF52832 Solution modules. (Click on link for Raytac nRF52832 module series)

IC: nRF52832
DK: PCA10040 (for nRF52832)
SDK: 16.0.0
Softdevice: s132_nrf52_7.0.1_softdevice.hex
IDE: Keil C
PC: Win 10

Below are the guidelines to implement Secure DFU OTA by using Raytac’s nRF52832 modules, SDK16.0.0.
It consists of 2 parts:

Part 1: Bootloader & Application

Part 2: Combining and merging built files (Article link)

In this article, we will be focusing on Part 1: Bootloader & Application.

Bootloader

Path: ..\nRF5_SDK_16.0.0_98a08e2\examples\dfu\secure_bootloader\pca10040_s132_ble\arm5_no_packs
Specifically for nRF52832, programmers need to embed ECC(Elliptic Curve Cryptography) into the bootloader.

Step 1. ’micro_ecc_lib_nrf52.lib’ library can be found in the path below, but we need to boot it up first.

Step 2. Unzip ’micro-ecc-master.zip’ to the below path(create a new “micro-ecc” file first).

Step 3. Run ’gcc-arm-none-eabi-7-2018-q2-update-win32.exe’.

Step 4. Make sure the Environment variables in Win10 are set as below. (Follow the steps 1 to 6)

Step 5. Open DOS → run the “make” command under armgcc path → generate’micro_ecc_lib_nrf52.lib’

Step 6. Add ’micro_ecc_lib_nrf52.lib’ into folder: nRF_micro-ecc

Step 7. An error may occur while building bootloader without a public key:
(Shown in red frames in below screenshot)

Step 8. How to generate the public key file in Bootloader?
A. Visit DOS at path: ..\Python27\Scripts
B. Then execute:

nrfutil keys generate private.pem
nrfutil keys display --key pk --format code private.pem --out_file public_key.c

Step 9. Copy the pk[64] code from (public_key.c) into (dfu_public_key.c)
(Shown in red frames in below screenshot)

※Note: Make sure to save the 3 generated files:
private.pem
public_key.c
dfu_public_key.c

Step 10. Generate the bootloader file: nrf52832_xxaa_s132.hex after re-compiling the code files.

Application

Path:
..\nRF5_SDK_16.0.0_98a08e2\examples\ble_peripheral\ble_app_uart\pca10040\s132\arm5_no_packs
Before building Application code , some amendments need to be made regarding DFU-related settings and code inside Application:

Step 1. Add code in definition in C/C++ :
BL_SETTINGS_ACCESS_ONLY NRF_DFU_SVCI_ENABLED NRF_DFU_TRANSPORT_BLE=1
(Total 3 steps definitions need to be set up)

Step 2. Add the 3 paths shown below in C/C++ to make DFU work.

Step 3. Add the .c files inside red frame in (Screenshots 1 & 2)
and add the 2 groups of (nRF_DFU & nRF_SVC)(Screenshot 4) under Project(Screenshot 3)

Step 4. Add code into main.c file in Application (..\examples\ble_peripheral\ble_app_uart\main.c)
(Please refer to: main.c file at: ..\examples\ble_peripheral\ ble_app_buttonless_dfu)

Step 5.
The code of file: sdk_config.h (..\examples\ble_peripheral\ble_app_uart\pca10040\s132\config\sdk_config.h)
inside Application needs to be modified.

Step 6. Adjust the IRAM1 value in Target after implementing DFU service:
Make sure the IRAM1 Value of *p_app_ram_start is modified from default: 0x20002AD8 0xD528 to
0x20002AE8 0xD518, as shown in the red frame in the bottom right corner.
In this case, the program should run/advertise successfully.

Step 7. Create a file of: nrf52832_xxaa.hex after building application code files.

Step 8. Create a bootloader setting file of nrf52832_bootloader_secure_settings.hex via DOS.
nrfutil settings generate –family NRF52 –application nrf52832_xxaa.hex –application-version 3 —
bootloader-version 2 –bl-settings-version 1 nrf52832_bootloader_secure_settings.hex –no-backup

※Stay tuned for Part 2: Combining and merging built files in the next article, scheduled release in next week(04-Sep-2024).

Technical guidelines provided by R&D Manager: Mr. MW Lee
Edited by Sales Manager: Ms. Mandy Chao

Raytac Corporation 勁達國際電子股份有限公司
Raytac Corporation: A Bluetooth, Wi-Fi, and LoRa Module Maker based on
Nordic nRF54; nRF53: nRF52; nRF51; nRF7002
Semtech Specification: SX1262

Bluetooth Specification: BT5.4 ; BT5.3; BT5.2.
Wi-Fi Specification: Wi-Fi 6
LoRa Specification: LoRaWAN

All products are FCC/IC/CE/Telec/KC/RCM/SRRC/NCC Pre-Certified.
http://www.raytac.com
email: sales@raytac.com
Tel: +886-2-3234-0208

Transition tips for program from MDBT50Q-RX (USB-A) to MDBT50Q-CX (USB-C) with current NRF52840 project

2024 年 07 月 17 日2025 年 05 月 27 日由Raytac Corporation撰寫發表留言

Intro:

This is a guidance provided for those who is going to transit (or replicate) their project from Raytac MDBT50Q-RX (USB-A Dongle) to MDBT50Q-CX(USB-C Dongle). In addition to the hardware spec change (Compact Size , LED, Button, Pin definition change) , the key firmware configuration should be made with changes to fit new USB-C Dongle MDBT50Q-CX.

MDBT50Q-RX MDBT50Q-CX

Table of Contents:

1. Comparison chart: MDBT50Q-RX(USB-A) & MDBT50Q-CX(USB-C)

2. Firmware configuration

3. Create a merged hex file (2 in 1 or 4 in 1)

4. Firmware flashing process

1. Comparison chart: MDBT50Q-RX & MDBT50Q-CX

2. Firmware configuration : MDBT50Q-RX → MDBT50Q-CX

Edit your current MDBT50Q-RX firmware with configuration change to align the PIN change to accommodate the hardware change.

Option 1. Using nRF5 SDK:

Make the definition set up of LED, BUTTON pin in the highlighted 4 sections.

Option 2. Using NCS V2.6.X:

Use the board name: nrf52840dongle_nrf52840 and add the overlay file:

nrf52840dongle_nrf52840.overlay to the program (Devicetree Overlays)，

then configure the below code definition into the overlay file:

/ {
leds {
compatible = “gpio-leds";
led0_green: led_0 {
gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
label = “Green LED 0″;
};
led1_red: led_1 {
gpios = <&gpio0 8 GPIO_ACTIVE_LOW>;
label = “Red LED 1″;
};
};

buttons {
compatible = “gpio-keys";
button0: button_0 {
gpios = <&gpio1 6(GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
label = “Push button switch 0″;
};
};
};

3. Create a merged hex file (2-in-1 or 4-in-1 hex file)

3A. Bootloader public key product

nrfutil keys generate public_key.pem → for zipping new firmware

nrfutil keys display –key pk –format code public_key.pem –out_file public_key.c

→ include public key to compile bootloader hex file

3B. Examples Demo

nRF5 SDK: nRF5_SDK_17.1.0_ddde560\examples\ble_peripheral\ble_app_uart\pca10056\s140

NCS V2.6.X: ncs\v2.6.0\nrf\samples\bluetooth\peripheral_uart

3C. How to generate bootloader setting file (if you need bootloader):

nrfutil.exe settings generate –family NRF52840 –application nrf52840_xxaa.hex –application-version 255 –bootloader-version 2 –bl-settings-version 1 bootloader_settings.hex

3D. Merge and create a 2-in-1 or 4-in-1 hex file

a). Merge 2-in-1 (no Bootloader file required):

mergehex.exe -m s140_nrf52_7.2.0_softdevice.hex nrf52840_xxaa.hex -o merge.hex

b). Merge 4-in-1 (with Bootloader file & Bootloader settings file required):

mergehex.exe -m bootloader.hex bootloader_settings.hex s140_nrf52_7.2.0_softdevice.hex nrf52840_xxaa.hex -o merge.hex

4. Firmware flashing process

MDBT50Q-RX(USB-A)：Manual wiring is required to have the firmware uploaded.

Please refer to the article: Firmware Coding & DFU onto MDBT50Q-RX

MDBT50Q-CX(USB-C)：Built-in open bootloader included for simple DFU process..

Please refer to the article: User Manual of MDBT50Q-CX (nRF52840/nRF52833-based USB-C Dongle)

Edited by Sales Manager: Ms. Jocelyn Tsai
Technical guidance provided by Firmware Deputy Manager: Mr. Stanley Huang

Raytac Corporation 勁達國際電子股份有限公司
Bluetooth & WiFi & LoRa module maker based on Nordic nRF54, nRF53, nRF52, nRF7002 solution
BT5.4 &BT5.3 & BT5.2 & BT5.1 Qualified, FCC/IC/CE/Telec/KC/RCM/SRRC/NCC/WPC Pre-Certified.
Bluetooth Solution: nRF54, nRF5340, nRF52840, nRF52833, nRF52832, nRF52820, nRF52811, nRF52810, nRF52805, nRF51822
WiFi Solution: nRF7002
http://www.raytac.com
email: sales@raytac.com
Tel: +886-2-3234-0208

User Manual of MDBT50Q-CX (nRF52840/nRF52833-based USB-C Dongle)

2024 年 07 月 10 日2025 年 05 月 27 日由Raytac Corporation撰寫1 則迴響

MDBT50Q-CX is an advanced version of Raytac’s MDBT50Q-RX(USB-A Dongle).

MDBT50Q-CX has a more compact size, equips an up-to-date Type C USB Connector, and it has a built-in open bootloader for simple DFU process.

If you’ve been developing projects using MDBT50Q-RX in the past, you can find out in this manual how MDBT50Q-CX makes firmware compiling and loading much easier than before.

If you want to load firmware into MDBT50Q-CX, no wiring is needed.

Simply plug the dongle into your device and USB DFU will be available.

MDBT50Q-CX (USB-C Dongle, nRF52840/nRF52833 solution): Product link

Size: 15.10 x32.85mm (0.59×1.29inches)

Table of Contents

A. Hardware intro

B. Software development environment setup

C. Firmware Implementation with NCS (nRF Connect SDK) or NRF5 SDK

D. Execute DFU (Device Firmware Update)

A. Hardware Intro

<Pin Allocation>

< Schematic> (Click on the image to redirect to product page for Higher resolution photo)

B. Software development environment setup

Option 1. Compile in NCS(nRF Connect SDK)

(1) Install nRF Connect for Desktop:

(2) Install Toolchain Manager and Programmer

(3) Install nRF Connect SDK (NCS) → V2.6.0 is recommended.

Option2. Compile in nRF5 SDK

(1) Download open source nRF5 SDK (Recommend: download the latest version: 17.1.0)

(2) Install Segger Embedded Studio v5.42a (Recommended version)

https://www.segger.com/downloads/embedded-studio/

※Welcome to contact Raytac sales team for v5.42a file of Segger Embedded Studio.

C. Implement firmware in NCS (nRF Connect SDK) or NRF5 SDK

We will use the two example codes below for this demo:

C1. NCS (nRF Connect SDK):

Example code path: \v2.6.0\nrf\samples\bluetooth\peripheral_uart

C2. nRF5 SDK:

Example code path: \nRF5_SDK_17.1.0_ddde560\examples\peripheral\usbd_ble_uart

C1. NCS (nRF Connect SDK): (Using nRF Connect SDK V2.6.0)

Step C1-1. Add build configuration to Board name: nrf52840dongle_nrf52840

Step C1-2. Disable DCDC & DCDCHV by adding the below code into prj.conf file

CONFIG_BOARD_ENABLE_DCDC=n

CONFIG_BOARD_ENABLE_DCDC_HV=n

Step C1-3. Fix the VDD power to 3.0V or 3.3V in board.c file

The default power is 3.0V if you use board name: nrf52840dongle_nrf52840.

In this case, you don’t need to alter the power.

Step C1-4. Click the rebuild icon to reconfigure the program.

Step C1-5. The program will be saved automatically in the path below:

C:\ncs\v2.6.0\nrf\samples\bluetooth\peripheral_uart\build\zephyr\zephyr.hex

C2. nRF5 SDK:

Step C2-1. Open the program under:

\nRF5_SDK_17.1.0_ddde560\examples\peripheral\usbd_ble_uart\pca10056\s140\ses\ usbd_ble_uart_pca10056_s140.emProject

Step C2-2. Fix the VDD power supply to 3.0V or 3.3V.

Step C2-3. Start editing the project by opening the solution in Editor.

Change the board name from PCA10056(nRF52840-DK) to PCA10059(nRF52840 dongle).

Save and re-compile the program after the amendment.

Click the program file name and save the modified project.

Press “Yes” to re-load the new set up value into configuration.

The default code in sdk_config.h is: NRF_LOG_BACKEND_UART_ENABLED 1 (in red frame);

Please change 1 to 0 to make the LED light work.

Press “Rebuild Solution” to make sure all the parameters you’ve modified are reconfigured.

Step C2-4. The program will be saved automatically under the path below:

V:\nRF5_SDK_17.1.0_ddde560\examples\ble_peripheral\ble_app_uart\pca10056\s140\ses\Output\Release\Exe\ble_app_uart_pca10056_s140.hex

D. Execute DFU (Device Firmware Update)

Reminder:

No extra bootloader can be programmed into MDBT50Q-CX until you manually wire the pins on the PCB and erase the built-in bootloader. You can simply operate DFU using MDBT50Q-CX’s bootloader.

Step D1. How to enable DFU?

(1) Press the button on MDBT50Q-CX

(2) Plug MDBT50Q-CX into your device while pressing the button

(3) Press and wait for approx.1 second until the LED light turns on. → DFU is activated.

(4) Release the button

※When Bootloader mode is enabled, the LED light on MDBT50Q-CX will twinkle continuously.

Step D2. Open the built-in DFU Bootloader

nRF Connect Desktop → Programmer → SELECT DEVICE → Open DFU Bootloader

You have successfully entered bootloader mode after you see the screen as below.

Step D3. Add ready firmware file into the Programmer

(The program completed and saved during Step C1-5(NCS) or Step C2-4(nRF5 SDK))

※If you’re using nRF5 SDK, you need to add the soft device file into your program for loading firmware.

※Soft device path:

nRF5_SDK_17.1.0_ddde560\components\softdevice\s140\hex\s140_nrf52_7.2.0_softdevice.hex

Step D4. Load the firmware and write it into the MDBT50Q-CX

Step D5. Process FW DFU

Step D6. DFU Completed. The appointed firmware is successfully loaded into MDBT50Q-CX.

※Any failure during the DFU process will leave you under bootloader mode.

If this happens, simply restart the firmware writing process from Step D4 to reload your firmware into MDBT50Q-CX.

Edited by Sales Manager: Ms. Jocelyn Tsai
Technical guidance provided by Firmware Deputy Manager: Mr. Stanley Huang

Raytac Corporation 勁達國際電子股份有限公司
Bluetooth & WiFi & LoRa module maker based on Nordic nRF54, nRF53, nRF52, nRF7002 solution
BT5.4 &BT5.3 & BT5.2 & BT5.1 Qualified, FCC/IC/CE/Telec/KC/RCM/SRRC/NCC/WPC Pre-Certified.
Bluetooth Solution: nRF54, nRF5340, nRF52840, nRF52833, nRF52832, nRF52820, nRF52811, nRF52810, nRF52805, nRF51822
WiFi Solution: nRF7002
http://www.raytac.com
email: sales@raytac.com
Tel: +886-2-3234-0208

Secure DFU OTA for nRF52840 solution modules: Guide to create hex/zip file for implementation – #3(Combining/merging built files)

2024 年 06 月 05 日2024 年 07 月 03 日由Raytac Corporation撰寫2 則迴響

Following up – Part A: Bootloader (Click for article link) and Part B: Application (Click for article link)

We will be focusing on:

Part C: Combining & merging built files

in this article.

IC: nRF52840
DK: PCA10056 (for nRF52840)
SDK: 17.1.0
Softdevice: s140_nrf52_7.2.0_softdevice.hex
IDE: Keil C
PC: Win 10

Part C: Combining & merging built files

Step 1. Execute the combine batch file in bootloader (nrf52840_bootloader_setting_merge.bat) and generate file of nrf52840_bootloader_secure_combin_settings.hex :

@echo off
title = [ J-Link Tool ] %CD%
set nrfDir=C:\Program Files (x86)\Nordic Semiconductor\nrf5x\bin
set BS= nrf52840_bootloader_secure_settings.hex
set BL= nrf52840_xxaa_s140.hex
set BSBLCombind= nrf52840_bootloader_secure_combin_settings.hex
set path=%nrfDir%;%path%
pause
echo ———–merge image file——————-
mergehex.exe -m %BS% %BL% -o %BSBLCombind%
pause

Step 2. Create a Final.hex file by 3-in-1 batch file(nrf52840_3in1_merge.bat)
※Note : This hex file is created for the production line to pre-load firmware into modules prior to shipment.

@echo off
title = [ J-Link Tool ] %CD%
set nrfDir=C:\Users\user\Desktop\Nordic BLE\nRF5_merge tools\nRF52 bin
set SD= s140_nrf52_7.2.0_softdevice.hex
set BLT= nrf52840_bootloader_secure_combin_settings.hex
set APP= nrf52840_xxaa.hex
set SD_BLT=SD_BLT.hex
set Finalfile=Final.hex
set path=%nrfDir%;%path%
pause
echo ———–merge image file——————-
mergehex.exe -m %SD% %BLT% -o %SD_BLT%
pause
mergehex.exe -m %SD_BLT% %APP% -o %Finalfile%
pause

Step 3. Create a DFU(OTA).zip file of nrf52840_xxaa.zip
※Note : This zip file is created for end device DFU(OTA) implementation.

nrfutil pkg generate –hw-version 52 –sd-req 0x100 –application-version 0xFF –application
nrf52840_xxaa.hex –key-file private.pem nrf52840_xxaa.zip

※Note :
The “0x100" appeared in the above DOS code(in red font) is the FWID(Firmware ID) for s140_nrf52_7.2.0_softdevice.hex;
FWID can be found from the soft device documents on the Nordic website.

Step 4: Run DFU OTA (On mobile in this example)

4A. Install the nRF Connect APP on mobile, with DFU OTA file: nrf52840_xxaa.zip. (Download link)

4B. Send nrf52840_xxaa.zip via email to mobile device after combination is done on PC, then download it.

4C. Open nRF Connect APP and run connection;

4D. Execute DFU and select “Distribution packet(ZIP)", thus starting the DFU OTA process.

4E. Start DFU OTA → exit the APP after DFU OTA is completed → restart the mobile device.

Secure DFU OTA for nRF52840 solution modules: Guide to create hex/zip file for implementation
Detailed links of articles:
Part A: Bootloader (Click for article link)
Part B: Application (Click for article link)
Part C: Combining and merging built files (Click for article link)

Technical guidelines provided by R&D Manager: Mr. MW Lee
Edited by Sales Manager: Mr. Tony Yin

Raytac Corporation 勁達國際電子股份有限公司
Bluetooth & WiFi module maker based on Nordic nRF54, nRF53, nRF52, nRF7002 solution
BT5.4 &BT5.3 & BT5.2 & BT5.1 Qualified, FCC/IC/CE/Telec/KC/RCM/SRRC/NCC Pre-Certified.
Bluetooth Solution: nRF54, nRF5340, nRF52840, nRF52833, nRF52832, nRF52820, nRF52811, nRF52810, nRF52805, nRF51822
WiFi Solution: nRF7002
http://www.raytac.com
email: service@raytac.com
Tel: +886-2-3234-0208

Secure DFU OTA for nRF52840 solution modules: Guide to create hex/zip file for implementation – #2(Application)

2024 年 05 月 29 日2024 年 07 月 03 日由Raytac Corporation撰寫2 則迴響

Following up-Part A: Bootloader (Click for article link)

We will be focusing on:

Part B: Application

in this article.

IC: nRF52840
DK: PCA10056 (for nRF52840)
SDK: 17.1.0
Softdevice: s140_nrf52_7.2.0_softdevice.hex
IDE: Keil C
PC: Win 10

Part B: Application

Path: nRF5_SDK_17.1.0_ddde560\examples\ble_peripheral\ble_app_uart\pca10056\s140\arm5_no_packs

Before building Application code , some amendments need to be made regarding DFU-related settings and code inside Application:

Step 1.

1A. Add code in definition in C/C++ :
BL_SETTINGS_ACCESS_ONLY NRF_DFU_SVCI_ENABLED NRF_DFU_TRANSPORT_BLE=1
(Total 3 steps definitions need to be set up)

1B. Add “include path” in C/C++

1C. Add the .c files inside red frame in (Screenshots 1 & 2)
and the 2 groups of (nRF_DFU & nRF_SVC)(Screenshot 3) under Project(Screenshot 4)

1D. Add code into main.c file in Application (..\examples\ble_peripheral\ble_app_uart\main.c)
(Please refer to: main.c file at: ..\examples\ble_peripheral\ ble_app_buttonless_dfu)

1E. The code of file: sdk_config.h (..\examples\ble_peripheral\ble_app_uart\pca10056\s140\config\
sdk_config.h) inside Application needs to be modified.

1F. Adjust the IRAM1 value in Target after implementing DFU service:
Check on the IRAM1 Value of *p_app_ram_start to be modified from default: 0x20002AE8 0x3D518 to 0x20002AF8 0x3D508, as shown in the red frame in the bottom right corner.
In this case, the program should run successfully.

1G: Create a file of: nrf52840_xxaa.hex after building application code files.

Step 2. Create a bootloader setting file of nrf52840_bootloader_secure_settings.hex : (via DOS)

nrfutil settings generate –family NRF52840 –application nrf52840_xxaa.hex –application-version 3 — bootloader-version 2 –bl-settings-version 1 nrf52840_bootloader_secure_settings.hex –no-backup

※Stay tuned for #3 – Part C: Combining and merging built files in the next article,

scheduled release in next week(05/06/2024).

Technical guidelines provided by R&D Manager: Mr. MW Lee
Edited by Sales Manager: Mr. Tony Yin

Raytac Corporation 勁達國際電子股份有限公司
Bluetooth & WiFi module maker based on Nordic nRF54, nRF53, nRF52, nRF7002 solution
BT5.4 &BT5.3 & BT5.2 & BT5.1 Qualified, FCC/IC/CE/Telec/KC/RCM/SRRC/NCC Pre-Certified.
Bluetooth Solution: nRF54, nRF5340, nRF52840, nRF52833, nRF52832, nRF52820, nRF52811, nRF52810, nRF52805, nRF51822
WiFi Solution: nRF7002
http://www.raytac.com
email: service@raytac.com
Tel: +886-2-3234-0208

Secure DFU OTA for nRF52840 solution modules: Guide to create hex/zip file for implementation – #1(Bootloader)

2024 年 05 月 22 日2024 年 07 月 02 日由Raytac Corporation撰寫2 則迴響

Here are the guidelines for users to implement Secure DFU OTA(over-the-air) while compiling using nRF52840 Solution modules. (Click on link for Raytac nRF52840 module series)

IC: nRF52840
DK: PCA10056 (for nRF52840)
SDK: 17.1.0
Softdevice: s140_nrf52_7.2.0_softdevice.hex
IDE: Keil C
PC: Win 10

Below are the following steps to implement Secure DFU OTA by using nRF52840 chip set, SDK17.1.0.
It consists of 3 parts:

Part A: Bootloader

Part B: Application (Click for article link)

Part C: Combining and merging built files (Click for article link)

In this article, we will be focusing on Part A: Bootloader.

Part A: Bootloader

Path: nRF5_SDK_17.1.0_ddde560\examples\dfu\secure_bootloader\pca10056_s140_ble\arm5_no_packs

Step 1. An error may occur while building bootloader without a public key:
(Shown in red frames in below screenshot)

Step 2. How to generate the public key file in Bootloader?
A. Visit DOS at path: ..\Python27\Scripts
B. Then execute:

nrfutil keys generate private.pem
nrfutil keys display --key pk --format code private.pem --out_file public_key.c

Step 3. Copy the pk[64] code from (public_key.c) into (dfu_public_key.c)
(Shown in red frames in below screenshot)

※Note: Make sure to save the 3 generated files:
private.pem
public_key.c
dfu_public_key.c

Step 4. Generate the bootloader file: nrf52840_xxaa_s140.hex after re-compiling the code files.

※Stay tuned for #2 – Part B: Application in the next article, scheduled release in next week(29/05/2024).

Technical guidelines provided by R&D Manager: Mr. MW Lee
Edited by Sales Manager: Mr. Tony Yin

Raytac Corporation 勁達國際電子股份有限公司
Bluetooth & WiFi module maker based on Nordic nRF54, nRF53, nRF52, nRF7002 solution
BT5.4 &BT5.3 & BT5.2 & BT5.1 Qualified, FCC/IC/CE/Telec/KC/RCM/SRRC/NCC Pre-Certified.
Bluetooth Solution: nRF54, nRF5340, nRF52840, nRF52833, nRF52832, nRF52820, nRF52811, nRF52810, nRF52805, nRF51822
WiFi Solution: nRF7002
http://www.raytac.com
email: service@raytac.com
Tel: +886-2-3234-0208