Re: [lwip-users] initialisation of lwIP

[Leon Woestenberg]

Hello Franz,

> I tried the pbuf.c which you sended to me. But still the programme stops
> during my attempt to execute pbuf_init() with the following debug message:
>
> But if I press the reset button of the board the execution of the programme
> --after one "successful" attempt--  stops after the message:
> Assertion "mem_malloc: allocated memory properly aligned." failed at line
> 300 in c:\scr_lwip\lwip\src\core\mem.c
>
> So I don`t know what`s exactly going on...
>
>  
All assertions/warnings seem to tell you that you have memory alignment 
issues.

Please check that your lwipopts.h (options) override the default options 
(opts.h).

By default, the memory alignment is 1-byte granularity.
#define MEM_ALIGNMENT                   1

For your processor this should probably be 2. Did you already check this?

/* MEM_ALIGNMENT: should be set to the alignment of the CPU for which
  lwIP is compiled. 4 byte alignment -> define MEM_ALIGNMENT to 4, 2
  byte alignment -> define MEM_ALIGNMENT to 2. */

#ifndef MEM_ALIGNMENT
#define MEM_ALIGNMENT                   1
#endif

Regards,

Leon Woestenberg.