RE: [lwip-users] Compile Error related to lwippools.h file

[Bill Yang]

Hi,

    Re: I used Keil's RVMDK tool train.

Thanks for your help. However, after I created lwippools.h and compiled again. 
I got a couple of errors related this in memp.h file showed below. 

..\Common\ethernet\lwip-1.3.0\src\include\lwip/memp.h(60): error:  #29: 
expected an expression
..\Common\ethernet\lwip-1.3.0\src\include\lwip/memp.h(69): error:  #29: 
expected an expression

I've looked at the line 60 and 69 on the errors, but I could not figure out 
what is wrong. If you can help me again, it will be greatly appreciated.

#if MEM_USE_POOLS
/* Use a helper type to get the start and end of the user "memory pools" for 
mem_malloc */
typedef enum {
    /* Get the first (via:
       MEMP_POOL_HELPER_START = ((u8_t) 1*MEMP_POOL_A + 0*MEMP_POOL_B + 
0*MEMP_POOL_C + 0)*/
    MEMP_POOL_HELPER_FIRST = ((u8_t)
#define LWIP_MEMPOOL(name,num,size,desc)
#define LWIP_MALLOC_MEMPOOL_START 1
#define LWIP_MALLOC_MEMPOOL(num, size) * MEMP_POOL_##size + 0
#define LWIP_MALLOC_MEMPOOL_END
#include "lwip/memp_std.h"
/* Error is here, line 60 */    ) ,  
    /* Get the last (via:
       MEMP_POOL_HELPER_END = ((u8_t) 0 + MEMP_POOL_A*0 + MEMP_POOL_B*0 + 
MEMP_POOL_C*1) */
    MEMP_POOL_HELPER_LAST = ((u8_t)
#define LWIP_MEMPOOL(name,num,size,desc)
#define LWIP_MALLOC_MEMPOOL_START
#define LWIP_MALLOC_MEMPOOL(num, size) 0 + MEMP_POOL_##size *
#define LWIP_MALLOC_MEMPOOL_END 1
#include "lwip/memp_std.h"
/* Error is here, line 69 */    )  
} memp_pool_helper_t;


Bill Yang

Software Engineer

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-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of address@hidden
Sent: Tuesday, February 23, 2010 10:14 AM
To: Mailing list for lwIP users
Subject: Re: [lwip-users] where is lwippools.h file

Bill Yang wrote:
> Hi,
>
> After I enabled the MEM_USE_POOLS and MEMP_USE_CUSTOM_POOLS, so I can use the 
> memory pools. However, when I compiled the lwIP stack used in a demo of 
> freertos, I got a compiling error said that "lwippools.h": No such file or 
> directory as below message.
>
> ..\Common\ethernet\lwip-1.3.0\src\include\lwip/memp_std.h(90): error:  #5: 
> cannot open source input file "lwippools.h": No such file or directory
>
> I wonder if any one have a sample of lwippools.h, please briefly post here. 
> So I can refer it and create one in my project.
>    
For such things, there are the example ports for win32 and unix in the 
contrib module in CVS. Here's the lwippools.h file of the win32 port:

/* OPTIONAL: Pools to replace heap allocation
  * Optional: Pools can be used instead of the heap for mem_malloc. If
  * so, these should be defined here, in increasing order according to
  * the pool element size.
  *
  * LWIP_MALLOC_MEMPOOL(number_elements, element_size)
  */
#if MEM_USE_POOLS
LWIP_MALLOC_MEMPOOL_START
LWIP_MALLOC_MEMPOOL(100, 256)
LWIP_MALLOC_MEMPOOL(50, 512)
LWIP_MALLOC_MEMPOOL(20, 1024)
LWIP_MALLOC_MEMPOOL(20, 1536)
LWIP_MALLOC_MEMPOOL_END
#endif /* MEM_USE_POOLS */

/* Optional: Your custom pools can go here if you would like to use
  * lwIP's memory pools for anything else.
  */
LWIP_MEMPOOL(SYS_MBOX, 22, 100, "SYS_MBOX")



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