Smallest nRF52 device that can be fully updated through BLE?

RE: Smallest nRF52 device that can be fully updated through BLE?

Amanda Hsieh — Mon, 18 Oct 2021 12:03:02 GMT

Hi,

nRF52820 has enough space to update the current s112+bootloader via DFU.

-Amanda

RE: Smallest nRF52 device that can be fully updated through BLE?

mrono — Mon, 18 Oct 2021 06:10:26 GMT

[quote userid="77782" url="~/f/nordic-q-a/80679/smallest-nrf52-device-that-can-be-fully-updated-through-ble/334382#334382"]It's enough to update softdevice s112+bootloader.[/quote]

Yes, exactly. But is that possible to do using DFU? Is there enough flash for it?

It seems to me that there is just barely enough flash space on the 52820 to update the current s112+bl over ble. And if a future version of s112 is even one flash page larger then it won't fit anymore.

That is unless I have misunderstood something. Which is why I'm asking.

RE: Smallest nRF52 device that can be fully updated through BLE?

Amanda Hsieh — Fri, 15 Oct 2021 13:43:48 GMT

Hi,

It's enough to update softdevice s112+bootloader. There is s112 ble bootloader for nRF52820 under C:\Work\SDK\nRF5_SDK_17.1.0\examples\dfu\secure_bootloader.

Regards,
Amanda

RE: Smallest nRF52 device that can be fully updated through BLE?

mrono — Thu, 14 Oct 2021 13:00:32 GMT

Thank you for the suggestions, but I'm not (yet) concerned about the application size.

I'd like to have the option to update the softdevice. And I'm concerned that there isn't enough flash space on the nRF52820 device to update the softdevice at all if the update needs to be done over BLE.

RE: Smallest nRF52 device that can be fully updated through BLE?

Jimmywong2003 — Thu, 14 Oct 2021 12:55:27 GMT

HI,

there is some suggestions on how to optimize the code size.

jimmywongiot.com/.../