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Altera_Forum's avatar
Altera_Forum
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17 years ago

DE2 Ethernet Primitive Solution

With the DE2 board, the Ethernet controller does not seem to work in Quartus II 8.0 or 8.1. There are several problems with the DE2_NET demonstration; it was built pre-7.1, the software driver does n...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I will need some specifics on the setup, but I can give some broad suggestions. For anything which helps you get to the solution faster, I need to know the basics of what you are trying to do.

If you are manually handling ARP, a number of things can go wrong. The address is taken or incorrect, the HW type could be incorrect, or (likely), it sounds like DHCP could be assigning an IP, the reply is not what it should bind to.

First, if there is only one PC in the loop, why bother with ARP? It makes the system more robust and it will play nicely with a router, but it doesn't provide a lot of utility unless the end goal is a server.

Second, the more a network can be simplified, the faster a problem can be diagnosed. In this situation, use a hub between the PC and DE2. Have the PC bind to one port, the DE2 another.

If microLinux is used, more complexity is added to the system. A problem above the hardware layer is a discussion of RFCs.