RE: Need Help Adding DFU OTA via SMP (mcumgr) to Android BLE App

lukan — Wed, 04 Jun 2025 13:48:25 GMT

Hello Aleksander Nowakowski , Kenneth

Thank you so much for your response, I will follow the instructions as stated above.

Regards,

Nakul

RE: Need Help Adding DFU OTA via SMP (mcumgr) to Android BLE App

Aleksander Nowakowski — Wed, 04 Jun 2025 13:26:33 GMT

Hello,
First of all, you need to add the dependency to:

implementation 'no.nordicsemi.android:mcumgr-ble:2.5.0

Here you have an example (which is adding this as a library as local project, but replacing this line with the above will also work):

https://github.com/NordicSemiconductor/Android-nRF-Connect-Device-Manager/blob/fc9b6091de37a19e913d90ff87b3a181c616a66f/sample/build.gradle#L81

This dependency gives access to 2 important classes:

McuMgrBleTransport
FirmwareUpdateManager

First, you need to get the `BluetoothDevice`. This is what you get from scanning for Bluetooth LE devices, or having already connected in the app.

You pass this instance to the Firmware Update Manager in the constructor, toghether with a callback.

Before starting DFU set a mode using `setMode`. Usually CONFIRM_ONLY should work.

You need to create the "ImageSet" to pass to the `start` method of the manager. For that you may just copy-paste `ZipPackage` file to your app. It is unpacking the ZIP file generated by the `west build` command and providing the ImageSet object.

Please, follow the rabit in the sample app. I hope that helped!

RE: Need Help Adding DFU OTA via SMP (mcumgr) to Android BLE App

Kenneth — Wed, 04 Jun 2025 13:03:57 GMT

Hello,

I can check if someone have some pointers.

Kenneth