Secure DFU bootloader: application not starting

[mr91]

Hello,

I have a problem with secure bootloader. what I did:

1. Flash SoftDevice 130 using nRFgo Studio.
2. Compiling \examples\dfu\bootloader_secure\ (i removed the error regarding the key).
3. Flashing the bootloader with Keil (using nrfjprog.exe for flashing).

Unfortunately, the bootloader seems not to run. There is no advertisement "DfuTarg". When I compile the buttonless dfu example and flash it with Keil, there is still no response. So the bootloader does not start the application. There are no debug messages over UART either.

However, when I flash the precompiled debug version (secure_dfu_secure_dfu_ble_s130_pca10028_debug.hex), the bootloader is advertising as "DfuTarg". When I load an application (using Keil or DFU with nrfConnect´), it does not leave the bootloader mode.

Can you tell me whats wrong?

Thank you!

Edit: I use SD130 on nRF51

[Hung Bui]

Hi,

Please provide more information how you "removed the error regarding the key".

Which SDK version are you testing with ?

You can try to set the optimization level to 0 and step into the code and check why it doesn't advertise.