[lwip-users] [lwip] CS8900 question

[Earle Clubb]

Hi all,

I'm using Leon's CS8900 driver (June 13, 2002) with lwIP (August 5, 2002).
I'm seeing a problem and I'm not sure what's causing it.  I don't think it's
lwIP or the CS8900 driver, but it seems to be an anomaly with the CS8900.
Either that or I've done something to mess up the CS8900 init.

Here's what I'm seeing:  after resetting my system, I ping it from a PC.
The first three echo requests receive no reply, but the fourth one does.
After that, everything works fine until the next time I reset the system.
I've found that the echo requests are not even being sent from the PC
because the ARP request, which precedes each echo request, receives no
reply.  The fourth ARP request does receive a reply from the system, after
which the fourth ping works fine.

I've traced through the whole process on my system and it appears that
identical ARP reply packets are being sent to the CS8900 RXTXREG in
cs8900_output, which is correct, but apparently only packets after the third
one are actually sent out by the CS8900.

Has anyone encountered this or something similar before?  Any idea what the
problem could be?  I appreciate any help anyone may be able to provide.

Earle Clubb

Software Engineer
Valcom, Inc.

E-mail: address@hidden
Voice: (540) 563-2000 ext.253

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