I am using FreeRTOS 4.1.0 - OS, lwIP 1.1.1 and ppp. PPP, IP, ICMP (ping)
work fine and is stable I hope.
I have problem with TCP. I make http server. Ather telnet ip 80
connection is made (TCP_DEBUG: TCP connection established ...->80) and
then OS crashes. I did analise => OS is halt on TCP_EVENT_ACCEPT(pcb,
ERR_OK, err); in tcp_in.c (tcp_process). Have you any ideas?
Sounds like it's having some problem dereferencing the pointer to the
accept callback. This callback is called whenever a new connection is
established.
Kieran
hi,
It is a little accidental. In special moments (rarely) system crashes after
returning from TCP_EVENT_ACCEPT (I do not insert line defining
LWIP_CALLBACK_API and LWIP_EVENT_API in lwipopt.h, only opt.h define that).
Debug screen is stopped on printf before TCP_EVENT_ACCEPT and sometimes on
printf behind until .
I am suspecting a stack (although I defined huge stacks, every task has 1200
bytes, and memory heap for FreeRTOS, 24000 bytes) or something similar. I
think it is not caused by PPP because IP/ICMP is really stable. Everything
is ported into ARM7 at91sam7s256 (256kB FLASH, 64kB RAM).
Janusz
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