heap allocation on segmented ram

[Fibo]

The ram on the STM32H7 is segmented into non-contiguous sections. How would one be able to dynamically allocate memory in different sections of RAM? eg: put large objects in AXI-SRAM and small object that need fast access on DTCM.

I'm wondering if this is possible without a custom allocator however, links to open-source custom allocators or ideas for writing simple allocator would be appreciated.

[Piranha]

https://github.com/MaJerle/lwmem

[Tesla DeLorean]

My lazy approach in Keil was to stuff the additional regions into the the allocators linked-list.

Realistically you probably need different pools

[Fibo]

Interesting, I also think that different pools are necessary since I would like to explicitly select the pool with which I am working. The "LwMEM" library mentioned by @Piranha​  has the features I'm looking for. Not sure about the reliability since it is under active development. It does have a few unit tests and decent documentation so that is a good start.

[Tesla DeLorean]

These lost something in the forum transition, and I can't edit them, but for completeness, and so I don't have to search again

https://community.st.com/s/question/0D50X00009XkgLxSAJ/stm32f4-extending-the-heap-to-seperate-ram-regions

https://community.st.com/s/question/0D50X00009XkgWSSAZ/locate-heap-in-sdram

[Tilen MAJERLE]

Code on master branch or under releases is usually passing the tests. Of course it doesn't mean it is bug free :)

I welcome you to contribute if you believe you need more features.