Array size and available RAM?

[Alex Co]

Env: SES, nrf52 DK, Linux

Hi

I need to define a buffer (array of structure) in order to buffer readings. If i have more RAM I should create a bigger buffer if I have few RAM I need to create a short buffer.

My problem is that I can not get the available RAM.

When I rebuild program using SES it shows 2 charts with FLASH and RAM measurements, However, If I create a

unsigned char arr[1000];

as a global var or as a main function var the measurement is always the same after compilation. Why doesnt SES take into account the RAM occupied by new array?

Thanks

Alex

[awneil]

Would be better to ask this on the SES forum - as it's not specific to nRF52

https://forum.segger.com/index.php/Board/9-SEGGER-Embedded-Studio-related

This would be information passed back from the Linker.

SES builds its own linker script - so you'd have to ask Segger if they make any provision for this and, if so, what.

Alex Co said:

as a main function var

You mean as a local  - ie, automatic - within main() ?

In that case, it would be on the stack - so wouldn't show up in the RAM usage.

[Alex Co]

Thanks. I am going to ask to segger people

[awneil]

Alex Co said:

I am going to ask to segger people

There was a problem on the Segger forum which resulted in your post getting deleted.

You might want to try again ...

(and don't forget to give links between the 2 threads).