Will the call-stack size be an issue?

[DevZonee]

Hey all

I've some basic question about the Call-Stack.

In my application I have a series of functions which call other functions and so on until an depht of about 20 calls.

Now I was wondering if this might cause any problem with the available call-stack size, will the programm eventually run out of memory (Stackoverflow)?

What factors affect the usage of call-stack?

How can I estimate the safe depth of function calls?

The functions I've been talking about:

• have approximately 32 Bytes of parameter variables
• use approximately 64 Bytes of function local variables
• have no return values

I'm new to this topic, so if the information given above does not make any sense or is irrelevant, I'd appreciate any hints.

[awneil]

As well as the standard techniques, SES has some tools to help:

https://www.segger.com/products/development-tools/embedded-studio/technology/code-analysis/

[DevZonee]

Thanks for the link.

However I'm stil looking for some estimation if my application has a chance of running or if I have to make a fundamental rework of my design before implementation.

Could you make any estimations if I'm way off with a call depth of 20. Im just looking for some order of magnitute, no specific values. Or do I have to implement this first, and then use the tool you mentioned?

[awneil]

DevZonee said:

looing for some estimation if my application has a chance of running

That is what's described in the link I posted.

[DevZonee]

I'm not looking for a tool, I'm in no position to install any software (there is only Eclipse available) at my current workstation. Further I have no code yet, because I work on the design for now.

However its ok for me if my question can't be answered by a "yes it works" "no it doesn't work" with the information given above, I was just hoping for some simple answer.