Forum: ARM programming with GCC/GNU tools LPC2368 Ethernet issue

von Dom S. (sirsydom)

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I use the FreeRTOSlwIP Port for the LPC2368
(http://www.sirsydom.de/permalinks/MCB2300FreeRTOSlwIP.rar , originally
from Yahoo Groups).

So, this all works great, also ethernet and lwIP-Stack, but also while
oerating at 10MBit. When im connected with 100Mbit, sending of packets
to ethernet fails mostly. Recieving works perfectly, the IP-Stack
processes packet right and gives it it to ethernet driver and the
ethernetdriver works correct from my point of view.. There are no erros
in the TX Status register.

When I'm connected to a 100Mbit Hub, and i make a ARP-Request to a
non-existant Eth-Addr, just the PC (sender) Port of the Hub is flashing.
I think this means LED flashes only while sending, not recieving because
ARP is Brodacast and IS revieved by the LPC2368.

When i do a ARP Request on the LPC2368 MAC-Addr, both LEDs are
flahsing. That means to me the LPC is sending something ON the Ethernet.
But the PC is not recieving anything. Etherreal in prosmicous mode does
not display anything but the initial ARP-Request.

Some ideas???


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