I am debugging a strange disappearance of packets when it is posted to
a sys_mbox on my AT91 running eCos.
After running a continous ping test (ping every 3 seconds) for 30-40
minutes, the received packet seems to be eaten up somewhere and I was
able to trace it to just before the packet is posted to a sys_mbox.
What is interesting is that the same packet buffer and mbox msg are
used until the problem occured, from that point new packet buffers and
mbox msgs are allocated.
I would very much appreciate if someone can help me debug the sys_mbox.
 Log message when the failure is about to happen.
I am a newer person that uses lwip, and Now I need confirmation that
whether LWIP can be used on the 8-bit processor or not, Now I am
considering use LWIP or not on my project with NEC 8-bit processor.
On the website, I searched a few days, can not find which project with
8-bit processor is using lwIP.