How to release heap size on IMXRT1062 platform?

[Edward-Liao33]

Hi Sir:

Below is my platform information

Chipset: i.MX RT1060X Processor

OS: FreeRTOS , version V10.3.0

Memory management by file heap_3.c ( pvPortMalloc and vPortFree)

When I call function "vPortFree" at the end of my execution, I do not see the MCU heap being properly released. I think the function is releasing the heap of the RTOS rather than the on the MCU, right?

If yes, how can I release the heap on the MCU? 

Best Regards

Edward

[jingpan · Accepted solution]

Hi @Edward-Liao33 ,

Yes, heap3.c use system malloc/free function. It seems IDE can't detect new heap usage data after free().

You can test by below code

    pt=pvPortMalloc(0x200);
    *pt=1;
    vPortFree(pt);

The heap usage will increase when malloc, but will not decrease after free().

Regards,

Jing

[Edward-Liao33]

I understand, thank you Jing.