Can bootloader in SDK V11 boot into SDK V12/13/14 application

RE: Can bootloader in SDK V11 boot into SDK V12/13/14 application

Roland — Fri, 18 Aug 2017 04:12:45 GMT

Thank you Hung, that will be perfect.

RE: Can bootloader in SDK V11 boot into SDK V12/13/14 application

Hung Bui — Thu, 17 Aug 2017 15:48:11 GMT

Hi Roland,

The text should be updated. In previous version of the SDK (v12, v13) the serial bootloader was in experimental state. On SDK v14, it's moved out to production, and I would assume it should be full functional.

The bootloader from SDK v12 is a newly built bootloader, which has no backward compatible with the one in SDK V11. We call the bootloader from SDK v12: "Secure DFU". And the one on SDK v11 and earlier "Legacy DFU".

The bootloader from SDK v12 is built with good modularization, the two can be combined into one project, but there isn't much point doing so, as most of our customer only use 1 of the 2 transportation.

RE: Can bootloader in SDK V11 boot into SDK V12/13/14 application

Roland — Thu, 17 Aug 2017 13:11:03 GMT

Thanks Hung.

I saw that link, however when i click the 'BootLoader module' link on that page, its bit confusing that following text still present: infocenter.nordicsemi.com/index.jsp

"However, the current implementation of the bootloader modules does not provide the full functionality yet. The current implementation focuses on a bootloader that allows Device Firmware Updates over BLE and that can be extended with security and compatibility checks. If you need a DFU bootloader that supports serial (HCI/UART) transport, use the DFU bootloader example from a previous version of the SDK (v11.0.0 or earlier) instead of the bootloader modules. "

Seem inconsistent. Which one is correct?

Another question as a new starter, the DFU example in V11 includes both BLE & UART, while in V13/14 the BLE and UART mode are in 2 seperate examples. Is there any special consideration behind this? the 2 main.c file looks the same though.

RE: Can bootloader in SDK V11 boot into SDK V12/13/14 application

Hung Bui — Thu, 17 Aug 2017 10:33:00 GMT

infocenter.nordicsemi.com/.../sdk_app_serial_dfu_bootloader.html