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Altera_Forum's avatar
Altera_Forum
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20 years ago

eth0 not found

I am trying to bring up the Ethernet interface of my DE2 board, but it keeps me showing "SIOCSIFADDR: No such device" when I ifconfig it. I followed every step of the tutorial and I am using th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

I have figured out what was wrong just after a good night of sleep. It&#39;s amazing how things get clear when you have a shower. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif

I had forgotten to provide the proper clock to ENET_CLK signal! I knew I was missing something. Pehaps you are missing the same thing. Be careful of how you implement this clock. I did as follow and everything went ok: 

-- SOME CODE HERE
-- ...
SIGNAL tmpClk : STD_LOGIC := &#39;0&#39;;
BEGIN
    -- ENET CLOCK (25MHz)
    tmpClk <= NOT tmpClk WHEN CLOCK_50&#39;EVENT AND CLOCK_50 = &#39;1&#39;;
    ENET_CLK <= tmpClk;
-- MORE CODE HERE
-- ...

You can make this code without the tmpClk signal, I did it just for readability, but be sure of initialize the signal with "0" or &#39;1&#39; before applying the NOT operator.

I also had a look at the uCLinux source and changed my IRQ to 3 as well. This is the default IRQ for DM9000 and I thought it would avoid later problems.

Good luck!!