Needs to get free flash address for application usage.

[Srinivas V]

Hi Team,

We are using the nRF52840 for our application , in that we are planning to use 2 free flash pages for our internal application purpose.

So how to know the which specific flash sectors free by dynamically means by using some macro or nrf specifIc method, or by using IDE settings like IAR.

One more doubt in  linker file i have seen the flash ranges are in between 

    define symbol __ICFEDIT_region_ROM_start__ = 0x27000;
     define symbol __ICFEDIT_region_ROM_end__ = 0xfffff;

but when it comes to nrf52840_xxaa.board file it is mentioned like the ranges are in between  <range>CODE 0x00000000 0x10001FFF

Could please help me out on this difference.

Regards,

Srinivas.V

[Simonr]

Hi Srinivas

Please check out our Adjustment of RAM and Flash memory guide, which explains in detail how you reserve flash and RAM space for your application, SoftDevice, and bootloader. This will also show you what Flash and RAM space if free to use for storing data onto, and how to change the start and end addresses of the Flash and RAM in your project.

Best regards,

Simon