Heap & Stack Usage ARM Cortex M3, M5

Question

I want to measure Stack and heap usage while certain mathematical algorithm is running on my Renesas S3A7 ARM M3 based controller. Is there any way or procedure how I can measure the maximum memory utilized while executing certain functionality?

Answer 1

To measure the stack or heap usage you have to initialize this area with a padding value before usage, you can choose one listed below

https://en.wikipedia.org/wiki/Hexspeak

For example: 0xBAADF00D or 0xDEADBEEF.

The idea is to count the number of padding value left to estimate the maximum usage.