How to place constants at know address?

[bloobird0]

Hello,

when I was working on MSP430 I used to place the firmware version constant at a known address in flash so that it can be verified which firmware version is flashed without running the application, just by reading the flash with a programmer.

With a nRF52, how could I place constants at known addresses? I guess, the answer is compiler-specific? I'm using Keil.

Thanks in advance for your help.

[Jørgen Holmefjord]

Hi,

You can use the method shown in the Flash Write Example to write directly to addresses in flash.

You should also check out the UICR registers, and the UICR Config Example in the SDK, which are intended for storing user specific settings in non-volatile memory.

Best regards,

Jørgen