DFU

[harrys]

Hi, 

i am working on nrf52dk . i want to do DFU with BLE can you provide any document link. 

[Amanda Hsieh]

Hi, 

Check out https://devzone.nordicsemi.com/nordic/short-range-guides/b/software-development-kit/posts/getting-started-with-nordics-secure-dfu-bootloader 

-Amanda H.

[harrys]

i have merged the two hex files "secure bootloader dfu example code" and "softdevice_hex file". programmed it in nrf52dk.

now nrf52dk is advertising "dfuTarg". when i program the device (blinky_ble_code) with nrf mobile app. programming done but nrf52dk is still advertising "dfuTarg".

[Amanda Hsieh]

Hi, 

What is the error message? Can you provide the log from the nrf mobile app and secure bootloader debug version?

How do you generate the update package? Please post the command you are using. 

-Amanda H.

[harrys]

1.using mergehex to mergehex files

$ mergehex -m C:/Users/techn/Desktop/dfu/secure_bootloader_ble_s132_pca10040.hex C:/Users/techn/Desktop/dfu/s132_nrf52_
7.2.0_softdevice.hex -o C:/Users/techn/Desktop/dfu/bootloader.hex
Parsing input files.
Merging file "secure_bootloader_ble_s132_pca10040.hex" into output.
Merging file "s132_nrf52_7.2.0_softdevice.hex" into output.
Storing merged file.

2.command i am using for dfu pakage generate.

nrfutil pkg generate --hw-version 52 --application-version 1 --application ble_app_blinky_pca10040_s132.hex --sd-req 0x0101 --key-file private.key app_dfu_blinky.zip

Zip created at app_dfu_blinky.zip

[Amanda Hsieh]

Hi, 

Please use bootloader debuger version under SDK\nRF5_SDK_17.0.2\examples\dfu\secure_bootloader\pca10040_s132_ble_debug, and provide the log from J-Link RTT Vierwer or Segger.   

I would suggest you compile the ble_app_blinky_pca10040_s132 project and test the image under nRF5_SDK_17.0.2\examples\ble_peripheral\ble_app_blinky\pca10040\s132\ses\Output\Release\Exe

-Amanda H.

[harrys]

yes it works with "pca10040_s132_ble_debug". not with "pca10040_s132_ble".

[Amanda Hsieh]

Hi, 

They are almost the same except for the debug function, so pca10040_s132_ble should work. I have tested both can work. Erase the kit (nrfjprog --eraseall) before program the image. 

-Amanda H.

[harrys]

can you verify my steps.

1.merged hex file secure bootloader and soft device used with following command.

"mergehex -m C:/Users/techn/Desktop/dfu/secure_bootloader_ble_s132_pca10040.hex C:/Users/techn/Desktop/dfu/s132_nrf52_7.2.0_softdevice.hex -o C:/Users/techn/Desktop/d fu/bootloader.hex"

2.generated dfu pkg with following command.

"nrfutil pkg generate --hw-version 52 --application-version 1 --application ble_app_blinky_pca10040_s132.hex --sd-req 0x0101 --key-file private.key app_dfu_blinky.zip
Zip created at app_dfu_blinky.zip"

3.programmed generated dfu zip file with mobile app "nordic_connect".

4.after the programming done . nrf52dk advertise "dfutarg". can you tell any thing i am missing in  these steps

[Amanda Hsieh]

The procedure and commands look correct. The same flow can work with "pca10040_s132_ble_debug", then it supposed to work with "pca10040_s132_ble". 

-Amanda H.