Thread+BLE,DFU through ble

[NOA-BEN]

Hi, nordic engineer:

          Our project has a function, that is, BLE+Thread coexists. We hope that the mobile phone can upgrade the device through BLE. Can this idea be realized?

          I tried to burn softdecvice+bootloader, then use the mobile phone to give the device DFU. After the upgrade is completed, let the device power off and restart, the device does not jump to the application, but enters DFU mode again.

          The SDK version I currently use is nRF5_SDK_for_Thread_and_Zigbee_v3.1.0_c7c4730. I see some conflicts between the BLE DFU partition and the openthread data store. Can you tell me how to change it

[Vidar Berg]

Hi,

I don't see any problems with using the BLE bootloader on the same device as a BLE+Thread app. I would suggest that you try to debug the bootloader after DFU to find out why it falls back to DFU mode instead of booting the app.  First step can be to place breakpoints in nrf_bootloader.c::dfu_enter_check() and see if it returns true. 

The memory layout should be ok, but make sure that NRF_DFU_APP_DATA_AREA_SIZE in the bootloader project corresponds with the number of flash pages used by your application (OT Data + FDS pages if you use FDS in your app). 

[NOA-BEN]

Hi Vidar:

            Thank you for so fast reply. I will try to test BLE DFU again.