malloc, calloc and free on basys3 and nexys video

[Zzingoh]

Hi,

 

I have an Vitis application that is using calloc and free frequently. 

Calloc is working fine just one time and second time it returns NULL

 

Do you have any idea on this?

 

Here is my design information.

 

On Vivado, I am using 64KB local memory when I created microblaze 

In Vivado - Basys3 -  64KB local memory

In Vitis - standalone application, here are two functions. So Set() called first and then Get() called as a pair. 

1st pair : Set()->Get() works

2nd pair : Set()-> falied due to cmalloc error - Null returned!!!

 

void Get() 

{

   if (get.body)
      free(get.body);

}

void Set()
{

    pBody = (u8 *)calloc(len, sizeof(u8));
    if (!pBody)
    {
        xil_printf("cmalloc error - NULL returned \r\n");
        return;
    }

   get.body = pBody;

}

 

Is this because of no available heap size? how to check and increase it?

 

Thanks

 

[artvvb]

@Zzingoh

Assuming that you are doing a baremetal design, you can find the heap size (and stack size) in the application project's linker script file, lscript.ld.

Thanks,

Arthur