BLE_DFU_ENABLED not used in library?

[Mike]

I am using the mesh SDK version 2.2 (I think - I renamed the folder when I started, but I can't find a reference to the version number in the library! I am sure it is 2-point-something).

I am using SDK15.2. I am using SEGGER.

My project is built on the light switch proxy client. I have gone to the app_config.h and added:

#define BLE_DFU_ENABLED 1
#define NRF_DFU_BLE_BUTTONLESS_SUPPORTS_BONDS 1

but it did not enable the DFU. I then searched the project to find where it is referenced (to see if I needed to call an init function), and discovered that it is NOT used! What is this macro supposed to enable? How do I enable the DFU support?

I have seen many posts about adding DFU support. Several posts refer to the HRS example. The HRS example does not have any references to the BLE_DFU_ENABLED except in the sdk_config.h file. I even searched the entire solution for "DFU" and found nothing useful.

I have read "Switching to bootloader/DFU mode" in the info center, but does not tell me what files I need or what code to write.

Where are the instructions on how to enable firmware upgrading? 

[bjorn-spockeli]

HI Michael, 

you are correct that the macro BLE_DFU_ENABLED is not used in the bootloader library. It is simply an artifact from a previous SDK version. 

If you are developing with the mesh SDK, then you need to use the Mesh Bootloader(not the standard one from the nRF5 SDK), which can be found pre-built in the nrf5_SDK_for_Mesh_v2.2.0_src\bin\bootloader folder, see the DFU quick start guide for more information. 

Best regards

Bjørn