RE: in the SDK 15.3,How to directly execute the application when the DFU function is added。MCU：nrF52832

[Ming]

hi,

        in the SDK15.3，I successfully ported the DFU demo to app_uart, but the 52830 will enter the upgrade state each time after downloading the program. I want to know how to solve this problem? I have tried adding bootloader setting, I am sorry that this problem has not been improved.

      And I tried the following method:

     @echo Flashing Softdevice and bootloader
     mergehex -m $(OUTPUT_DIRECTORY)/nrf52832_xxaa_s132.hex $(SDK_ROOT)/components/softdevice/s132/hex/s132_nrf52_6.1.1_softdevice.hex -o sdbl.hex
      nrfjprog  -F - nrf52 --program sdbl.hex --chiperase -r.

       thanks.

[Vidar Berg]

Hi,

Assume you're loading the app FW with the Debugger and not through DFU? In that case, have you tried to follow the steps outlined in appendix 1 of this blog post here: https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/getting-started-with-nordics-secure-dfu-bootloader? 

[Ming]

Yes, I set it up according to this blog step, use nRF connect to load SD+APP+BL and then enter Dfutarg. Add bootloader setting is still like this.

[Ming]

Thank you,but It doesn't seem to change anything.

PS E:\key> nrfutil settings generate --family NRF52 --application nrf52832_xxaa.hex --application-version 1 --bootloader-version 2 --bl-settings-version 1 bootloader_setting.hex                                                               
Generated Bootloader DFU settings .hex file and stored it in: bootloader_setting.hex

Bootloader DFU Settings:
* File:                 bootloader_setting.hex
* Family:               nRF52
* CRC:                  0x8ADC5471
* Settings Version:     0x00000001 (1)
* App Version:          0x00000001 (1)
* Bootloader Version:   0x00000002 (2)
* Bank Layout:          0x00000000
* Current Bank:         0x00000000
* Application Size:     0x00011814 (71700 bytes)
* Application CRC:      0xECCD8805
* Bank0 Bank Code:      0x00000001

PS E:\key> mergehex --merge nrf52832_xxaa_s132.hex bootloader_setting.hex --output output.hex
Parsing input hex files.
Merging files.
Storing merged file.
PS E:\key>                                                                                                                                                                                                                                                                   

[Vidar Berg]

Hi,

Can you upload the .hex files you use so I can try it here? I can make the ticket private if you want. 

[Ming]

Of course, this is my pleasure.8640.s132_nrf52_6.1.1_softdevice.hex5123.nrf52832_xxaa_s132.hex8750.nrf52832_xxaa.hex

[Vidar Berg]

Hi,

It seems to work. I created the settings page and merged it with your hex files. You can see the debug log below.

bl_sd_app_settings.hex

3513.settings.hex

Can you try the merged hex and see if you get the same result?

[Ming]

oh，UnbelievableI need to confirm. thank you so much

best wish.