Mesh SDK v3.1.0 and light switch server app and the segger .emproject file

[Mahendra Tailor]

Hi

I am looking at the file 

\examples\light_switch\server\light_switch_server_nrf52840_xxAA_s140_6_1_0.emProject

and in there I see that there is the line

linker_section_placements_segments="FLASH RX 0x0 0xf8000;RAM RWX 0x20000000 0x3f000"

It shows that total flash is 0x1000 less than the actual available in 840 and the same for RAM - 1K less.

I then had a look at sample SES project files in SDK 15.2.0 and there the flash and ram uses is all that is available in the 840.

Question:

Is there any reason why the Mesh application is telling the linker that both flash and ram are 1K less than the actual amount in the 840?

Look forward to hearing from you

Regards

Mahendra

[awneil]

Note that 0x1000 = 4096 = 4K - not 1K

[Mahendra Tailor]

I stand corrected :-)

However, importantly my question is why the full amount of memory is not used.

[Mttrinh]

Hi,

The reserved area in flash is 32K and in RAM it is 4K. This is to account for the future use of the bootloader.