Re: [lwip-users] MEM_SIZE

[address@hidden]

On 14.03.2018 16:42, Giuseppe Modugno wrote:
> I was experimenting with lwip memory allocator. I defined:
>
> #define MEM_LIBC_MALLOC  0
> #define MEM_USE_POOLS      0
> #define MEM_SIZE  (32 * 1024)
> #define LWIP_RAM_HEAP_POINTER  ( (void *)0x2007C000 )
>
> I'm using LPC1768 that has a 32kB SRAM block starting from address
> 0x2007C000. However I have a Hard Fault error during mem_init(), because
> ram_end is initialized to 0x2007C000 + (32*1024), that is over the
> available memory.
>
> So MEM_SIZE should be smaller than available heap memory.

Is that a question? Or an action request? To my understanding, the 
comment above #ifndef LWIP_RAM_HEAP_POINTER in mem.c clearly states that 
enough memory is required. It does NOT say that amount is MEM_SIZE. If 
you want, create a patch with a better documentation and we could apply it.

Simon