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Re: [lwip-users] tcp/ip task - stack size

From: FreeRTOS Info
Subject: Re: [lwip-users] tcp/ip task - stack size
Date: Sun, 13 Nov 2011 07:52:53 +0000
User-agent: Mozilla/5.0 (Windows NT 5.1; rv:8.0) Gecko/20111105 Thunderbird/8.0

On 13/11/2011 06:41, Martin Velek wrote:
> Hi,
> I am using lwip 1.4.0 on the ARM7(32bit) platform with FreeRTOS and
> NO_SYS = 0. There is a parameter to setup stack size of the core lwip
> task inside lwip header. Has anyone experienced with the smallest
> possible size (in bytes) to save memory? I mean the worst case
> scenario when all relevant options are enabled. I do not include user
> callbacks called from tcp/ip context.

You can do this experimentally by viewing the high water mark of the
consumed stack, then adjusting as necessary.  If you overflow the stack,
that can be trapped.


If you have a way of viewing the output you can also use:

If you are using IAR, some Keil versions, or Eclipse, then the kernel
aware plug in will also show you the stack high water mark.


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