loader: how to interact with the secure ble bootloader to do ota fw update

[astella]

To the kind attention of Nordic support team,

we are very much interested in interacting with your nRF52840 devices preprogrammed with the wireless bootloader and waiting for fw updates.

We have already put to the test the bootloader and everything is going fine. As you suggest, we use nRFConnect to program the usb dongle that is

going to interact with the wireless bootloader as a loader. We need to embed the wireless loader feature to an nRF52840 device, so that is able to receive through USB interfaces,

fw chunks that are provided in order to reprogram an nRF52810 device being in a status where the wireless bootloader is active and listening for updates.

May you please point me out to documentations that I can find in order to accomplish this task?

Hope that our idea is clear, and feel free to ask me every clarification if needed.

Thanks for all your remarkable work and your valuable help.

Best regards

[Hung Bui]

Hi Stella, 

Please correct me if I'm wrong. You want to make a stand alone DFU master which can do OTA DFU to other devices ? And the DFU master can receive the image via USB ? 

We currently don't have an example for BLE DFU master running on nRF52 board. However, we do have example for UART/SPI master on NRF52. You can have a look here. 

To create your BLE DFU master code, you can follow what we do in our nRFConnect program. And follow the documentation of the DFU protocol here. 

[astella]

Ok, thank you for replying us. That is clear