Jifl,
On Wed, Aug 27, 2008 at 5:52 PM, Jonathan Larmour <[EMAIL PROTECTED]>wrote:
> Akshat Bisht wrote:
> > I don't have any means to read the debug values. When if i enable
> > display functions, i won't have any means to "read" it. Am i sounding
> > confused? All i wish to say is that i don't have means like JTAG, etc.
> > to read back any thing from my kit.
>
> How were you able to tell mem_malloc was returning NULL?
I was able to tell that because in pppmain the program was getting inside
the
if (!p) {
//light led
LWIP_ASSERT("p != NULL", p);
pc->errCode = PPPERR_ALLOC;
goto out;
i set an LED there.
>
>
> > Ok here is my problem: i increased MEM_SIZE to 2000 (if i put anything
> > more the code is no longer executed. Even with the increased size,
> > mem_malloc returns NULL..
>
> Are you short of memory on this target? Do you know how much you should
> have free? In other words, has the program become too big for available
> RAM? You should check how much RAM it uses against how much your target has
> got. How to do that will depend on your development environment, tools,
> etc.
I'm using IAR's Workbench for ARM with PowerPAC OS. Target is LPC 2129. When
i changed PPP_MRU size from 1500 to 200, it works fine. Still PPP is not
going up and i'm not getting any data out of the serial port.
May i add a few questions here?
1. what is the lwip "main task"? I understand that there are in all 3
tasks(or threads), "tcpip", "ppp", "lwip". I call pppInit() and
tcpip_init() from my own task, does this task become lwip main? i plan to
call the http_server example from this next.
2. can i do without writting a thread oriented sys_timeouts()? till now it's
a simply -
struct sys_timeouts *sys_arch_timeouts(void) {
return &lwip_system_timeouts;
}
3. Apart from ppp, tcpip, is there any other thread under lwip? I'm asking
this because i was currently done away with sys_thread_new and in place have
placed direct MY_OS_TASK_CREATE function calls in place of it in ppp.c and
tcpip.c
4. How do i manage the buffer at sio.c level? my processor has a 5 byte
stack, but i guess i will need more than that?
Thanks and regards,
Akshat
>
>
> Jifl
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