How can I get free heap size?

[MoonLight423]

First，it,s celebratory that tlsf work well in SDRAM with STM32H750.

But how can I know the free size just like esp_get_free_heap_size();
I try to log info after malloc, but the value not change.Or I need to count that in my way?
log_d("tlsf size:%d", tlsf_size()); log_d("tlsf align size:%d", tlsf_align_size()); log_d("tlsf block size_min:%d", tlsf_block_size_min()); log_d("tlsf block size max:%d", tlsf_block_size_max());

[paniq]

@MoonLight423 as documented in the header, these functions all return constants. There is no function that gives you the available memory directly. However, you can use tlsf_walk_pool to get all unused blocks, and tlsf_block_size to get the size of each unused block.