[lwip-users] hi - compiling lwip questions...

[Eric Shufro]

I am new to lwip and have many questions. I have read most of the documentation, but the puzzle is still a bit unclear.

 

For starters, after downloading the distribution from Savanna, what other files are necessary?

 

I found a port of lwip for UCOS-II which I currently have running well on a Motorola hcs12 microcontroller.

 

The port contained lib.c, sys_arch.c cc.h, perf.h and sys_arch.h.

 

I found cpu.h, debug.h, and lwipopts.h by searching the web (after getting compiler errors that they were missing)

 

I am unsure what lwip files I need to actually include into my project. Do I just use the files in the API directory? I read the docs and noticed a description of how to send and receive using different api’s, but some of these functions are in tcp.c – do make calls to the functions in this file?

 

Its quite unclear at this point.

 

Additionally, when I try to compile sockets.c, I get all kinds of errors like ; missing and typdef name expected, type specifier mismatch, missing ) etc.. in ip_addr.h in this area…

 

PACK_STRUCT_BEGIN

struct ip_addr {

  PACK_STRUCT_FIELD(u32_t addr);

} PACK_STRUCT_STRUCT;

PACK_STRUCT_END

#ifdef PACK_STRUCT_USE_INCLUDES

#  include "arch/epstruct.h"

#endif

 

/* For compatibility with BSD code */

struct in_addr {

  u32_t s_addr;

};

 

I don’t see anything obviously wrong, but I am new to this and don’t really understand the pieces fully.

 

Thanks for the help,

 

--eric shufro