Secure DFU won't connect NRF51 S130 SDK 12.3.0

RE: Secure DFU won't connect NRF51 S130 SDK 12.3.0

Vidar Berg — Fri, 04 Sep 2020 06:27:29 GMT

Good to hear that you were able to solve this, and thanks for reporting back. If I remember correctly, the link time optimization option (-flto) messed up something with the vector table if built with other GCC versions (This SDK is verified with 4.9.3). I think it will work with 9.3.1 if you remove '-flto' in the Makefile.

RE: Secure DFU won't connect NRF51 S130 SDK 12.3.0

Diego — Thu, 03 Sep 2020 17:46:22 GMT

I finally got it to work using a different compiler version.

First I was compiling with armgcc version 9.3.1 (2020-q2-update). After rebuilding and it still didn't work I downloaded the same version(4.9.3) that is in the makefile.windows file, rebuilt micro-ecc, the bootloader, and the blinky firmware using that version and it worked. I was able to connect and upload the blinky firmware through NRF Connect.

I also did a little bit of debugging with the bootloader compiled with version 9.3.1 and noticed that when I try to connect the WDT interrupt activates.

RE: Secure DFU won't connect NRF51 S130 SDK 12.3.0

Diego — Thu, 03 Sep 2020 14:09:23 GMT

I tested with the pre-compiled bootloader hex file and it does connect.

I only changed the dfu_public_key.c file, but I will try again from scratch in case I changed something by accident.

RE: Secure DFU won't connect NRF51 S130 SDK 12.3.0

Vidar Berg — Thu, 03 Sep 2020 13:00:42 GMT

Hello,

Please try to see if you get the same result if you program the pre-compiled bootloader hex file in \nRF5_SDK_12.3.0_d7731ad\examples\dfu\bootloader_secure\pca10028_debug\hex\. I am not really sure what the problem could be. Have you made any changes to the bootloader code apart from adding new keys?

[quote user=""]Led 3 on the dev board turns on, as I read that it should when the chip is in DFU mode, but I also noticed that Led 1 also turns on slightly after. I couldn't find anywhere in the documentation or the source code why Led 1 turns on.[/quote]

LED_1 is on when advertising and turned off while connected. The LED is referenced as "ADVERTISING_LED_PIN_NO" in the project.