NRF52840 BLE DFU WITHOUT USING NORDIC CONNECT APP

RE: NRF52840 BLE DFU WITHOUT USING NORDIC CONNECT APP

Vidar Berg — Tue, 22 Aug 2023 15:27:52 GMT

I'm not sure I understand what difference it makes if you provide the bin and dat file instead of the zip file in nRF connect? The app expects the .bin and .dat file to be packaged in a zip.

RE: NRF52840 BLE DFU WITHOUT USING NORDIC CONNECT APP

Selvablaze — Tue, 22 Aug 2023 12:36:38 GMT

This I have experimented already but I wanted to experiment without using that zip file instead directly wanted to send the .bin file and .dat file that's how this question has raised to me.

RE: NRF52840 BLE DFU WITHOUT USING NORDIC CONNECT APP

Vidar Berg — Tue, 22 Aug 2023 10:51:38 GMT

You are supposed to select the DFU zip file when using th nRF connect desktop or mobile app. It's only when you perform DFU from another microcontroller that you will need to extract the zip yourself.

I'd recommend you have a look at this guide if you haven't seen it already: Getting started with Nordic's Secure DFU bootloader, a step by step guide

RE: NRF52840 BLE DFU WITHOUT USING NORDIC CONNECT APP

Selvablaze — Tue, 22 Aug 2023 10:33:56 GMT

Thanks @Vidar Berg for helping me out. I got cleared now. I just tried this without using another MCU. Rather in the nRF Connect Desktop app, tried sending the dat file contents (converted them into hex) and executed sucessfully. But when I try to send the bin file contents (the same like dat file), I'm getting BLE_HCI_CONNECTION_TIMEOUT error!

RE: NRF52840 BLE DFU WITHOUT USING NORDIC CONNECT APP

Vidar Berg — Tue, 22 Aug 2023 07:13:58 GMT

The DFU controller is not supposed to decode anything, it should just send the raw content of those files to the DFU target.

RE: NRF52840 BLE DFU WITHOUT USING NORDIC CONNECT APP

Selvablaze — Tue, 22 Aug 2023 06:56:35 GMT

We cannot send the contents of the *.dat & *.bin files directly as the files are encoded. How do I send them as data packets?

RE: NRF52840 BLE DFU WITHOUT USING NORDIC CONNECT APP

Vidar Berg — Tue, 22 Aug 2023 06:32:46 GMT

Please let me know what documentation you are looking for.

RE: NRF52840 BLE DFU WITHOUT USING NORDIC CONNECT APP

Selvablaze — Tue, 22 Aug 2023 05:04:32 GMT

Is there any reference documentation? If so, could you provide me the link of it.

RE: NRF52840 BLE DFU WITHOUT USING NORDIC CONNECT APP

Vidar Berg — Mon, 21 Aug 2023 13:03:27 GMT

To perform from another MCU, you will have to send the raw binary data contained in the *.dat (init packet) and *.bin (FW image) files from the DFU zip file as illustrated by the message sequence charts here: Message sequence charts. Unfortunately, we do not have any examples that demonstrate this as most use cases allow the FW to be updated from a PC or Phone/tablet.

RE: NRF52840 BLE DFU WITHOUT USING NORDIC CONNECT APP

Selvablaze — Mon, 21 Aug 2023 12:35:30 GMT

Thank you @Vidar Berg for this answer. I am adding to it, if I want to do it from another device (for say another mcu) which supports ble, What File format should I have to send, in this case? and How the packet will be received?.

RE: NRF52840 BLE DFU WITHOUT USING NORDIC CONNECT APP

Vidar Berg — Mon, 21 Aug 2023 11:22:19 GMT

Hello,

We offer DFU libraries for both Android and iOS, which can be integrated into third-party apps. Please refer to the following links for more details:

- https://github.com/NordicSemiconductor/Android-DFU-Library (DFU for nRF5 SDK)

- https://github.com/NordicSemiconductor/IOS-DFU-Library (DFU for nRF5 SDK)

- https://github.com/NordicSemiconductor/Android-nRF-Connect-Device-Manager (DFU for nRF Connect SDK)

- https://github.com/NordicSemiconductor/IOS-nRF-Connect-Device-Manager (DFU for nRF Connect SDK)