From:
address@hidden
[mailto:address@hidden On Behalf
Of Mechouk Nicolas
Sent: Wednesday, May 21, 2008 12:20 PM
To: Mailing list for lwIP users
Subject: Re: [lwip-users] XAPP663 (TCP/IP on V2P devices using lwIP)
problem
Thanks Bill.
It was a useful answer....But I've an other question.
For my application, I only need one connection from my client (my XUP V2P) to
my server (my PC). I've no SDRAM on my board, just embedded memory (BRAM).
The sending data size is about 128 bits.
>From lwipopts.h, what are the mininal sizes can I use to keep my ethernet
connection functionnal ?
I tried these
:
(new //old value)
#define
MEM_SIZE
1*1024*1024 //16*1024*1024
#define
MEMP_NUM_TCP_PCB
1 //8
#define
MEMP_NUM_TCP_PCB_LISTEN
1 //16
#define
PBUF_POOL_SIZE
1 //512
#define
TCP_SND_BUF
16*1024 //32*1024
and echo server still works but I want to use the least possible (I don't know
if my english is very correct...... ^^; )
Regards,
Nicolas
Bill Auerbach a écrit :
lwIP memory buffers are statically allocated which can cause BSS to be quite
large if your lwipopts.h defines a lot of storage. BSS doesn't take up
space in the output (elf) file so it's not uncommon to see programs
requiring much more storage than the output file size.
I hope I hit the mark what you were questioning.
Bill
-----Original Message-----
From: address@hidden
[mailto:address@hidden] On
Behalf Of Mechouk Nicolas
Sent: Tuesday, May 20, 2008 12:48 PM
To: Mailing list for lwIP users
Subject: [lwip-users] XAPP663 (TCP/IP on V2P devices using lwIP)
problem
Hi there,
I try to use lwIP to perform a TCP client application on my XUP V2P. I
use files of xapp663 from Xilinx.
But I'm very surprized by the programm size :
text data bss dec hex
75886 996 17598688 17675570 10db532
The lwIP lib file is about 200Ko and my .elf file isa about 200Ko too.
Anyone can illuminate me on this issue????
Regards,
Nicolas
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