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".

[harrys]

yes it works. thank you

[harrys]

can  you tell me how i  can do the same with ble_buttonless_dfu example. 

[Amanda Hsieh]

In your command, modfiy "ble_app_blinky_pca10040_s132.hex" to ble_buttonless_dfu image. Also see nRF52832-buttonless-dfu-development-tutorial 

-Amanda H.

[harrys]

i did buttonless_dfu code in nrf52dk .what happened it advertise "NORDIC_BUTTONLESS" and then i did another code with mobile app. how to get back to dfu mode

[Amanda Hsieh]

Holding Button 4 on the nRF52DK during startup makes the device enter DFU mode.

-Amanda H.

[harrys]

but i am working on buttonless_dfu.

[Amanda Hsieh]

I think you are using BLE Secure DFU Bootloader and buttonless_dfu, so the bootloader supports that Button assignment. See BLE Secure DFU Bootloader-Button assignment. 

-Amanda H.

[harrys]

i was looking for something that doesnot include button

[Amanda Hsieh]

Hi, 

There is no such thing as " buttonless dfu bootloader".  You need to do is to implement the buttonless service into your application(i assume it's a BLE application). The buttonless example provided in the SDK is an example of how to implement buttonlessDFU service into your application. 

-Amanda H.

[harrys]

hi,

i want to implement buttonless_dfu with my code.

as i found here

https://github.com/gamnes/nRF52832-buttonless-dfu-development-tutorial

buttonless example runs but it doesnot shows dfu icon