zephyr-nrf-ble-dfu

The easiest way to add BLE DFU (Device Firmware Upgrade) to your nRF5x Zephyr application.

Setup

To include DFU over BLE to your Zephyr project based on the nRF Connect SDK (NCS) for one of the BLE capable Nordic Semi SoCs you need to add a source from this repository to your application. To be able to run BLE DFU the application you are writing needs to have BLE already enabled, usually in prj.conf with CONFIG_BT and probably with some additional configurations. Steps to run:

• from prj.conf within this repository copy everything and add to your application prj.conf or to board-specific configuration within the project
• from CMakeLists.txt within this repository copy everything and add at the end of your application CMakeLists.txt
• Copy the file init_dfu.c from the boards folder within this repository to the boards folder in your application. If there is no boards folder in your application copy the whole boards folder.

After this build your project west -b your_board -p and flash the device west flash. After building in the build/zephyr folder you should see app_update.bin which is an image of your build that needs to be sent over BLE DFU (for more information about image files see the link). Use one of the mobile applications that support SMP protocol for uploading the DFU image, like nRF Connect or Device Manager from Nordic Semi or simply use mcumgr CLI interface for uploading the new image.

Testing

To test this setup you can use one of the NCS examples that utilize some BLE-connected device. For example ncs/nrf/samples/bluetooth/...