nrf5 SDK BLE DFU

[kfci-eng]

Hello,

I have a legacy project that is using nrf5 sdk v17.0.2. I need to add the BLE DFU functionality to this project based on the nRF52840. Are there any examples on how to do this with his version of the sdk? I cannot find any examples provided by Nordic, all examples seem to be for nrf connect SDK. I downloaded the sdk and I see an examples/dfu folder but not sure how to navigate it and their doesn't seem to be any documentation on it. Any guidance would be great. Thanks!

[Hung Bui]

Hi, 
You can take a look at the documentation of the SDK. We do provide BLE DFU solution in the SDK.
Here is where DFU is described: https://docs.nordicsemi.com/bundle/sdk_nrf5_v17.0.2/page/lib_bootloader_modules.html

The bootloader example are here: https://docs.nordicsemi.com/bundle/sdk_nrf5_v17.0.2/page/examples_bootloader.html

https://docs.nordicsemi.com/bundle/sdk_nrf5_v17.0.2/page/ble_sdk_app_dfu_bootloader.html

My suggestion is to get familiar with the examples before you try to implement the bootloader to your application. 

I made a blog here some time ago , it might be useful: Getting started with Nordic's Secure DFU bootloader, a step by step guide