RE: Buttonless DFU without Bonding

Hung Bui — Mon, 15 Jun 2015 07:57:16 GMT

@Lucas: Bootloader setting area is located at BOOTLOADER_SETTINGS_ADDRESS = 0x0003FC00, it's defined with the structure bootloader_settings_t. please have a look at bootloader_settings.c

RE: Buttonless DFU without Bonding

Lucas — Fri, 12 Jun 2015 18:25:47 GMT

What is the bootloader setting area? I will likely try to use RAM. THanks for help.

Lucas

RE: Buttonless DFU without Bonding

Hung Bui — Thu, 11 Jun 2015 12:01:57 GMT

Hi Lucas,

Regarding your question on sharing bond information you can have a look at my blog here, at section #D.

The reason we want to share bond information is that we want the link to be encrypted when doing DFU, so that the new image transmitted is not exposed to attacker.

Let me know if there is following question on that.

Regarding the issue with .zip file, you should not send 3 files at the same time. Usually we only support softdevice+bootloader in one zip file. The application should be updated separately.

UICR can't be overwritten. So if you plan to have a version change, please use the bootloader setting area for the purpose, or a flash page that you already pointed out.

If you don't want use flash you can think of using RAM for that, it should be something similar to how we share the bond information. Put your version data into no-init data in RAM to share between bootloader and application.