A newbie needs help with ethernet in NiosII

Altera_Forum · ‎03-06-2007

Hi all!!!!

I'm starting with NiosII processor and I need some help. I want to send/receive some data to/from a PC via ethernet. I was using NiosI with no problems, but I can not migrate my code to NiosII by any means (I've tried to do it using microC and a couple of threads instead of my initial single threaded code) so I'm planning to start again from zero.

The question is: Is there any simple way (I mean single threaded, and with no OS) to send/receive via ethernet??? Something like nr_plugs_send()???. I`ve tried the standalone lwip, but there are some things that I can't understand (sorry I'm a hardware man http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/unsure.gif )

Thanks to all!!!!!!

Altera_Forum · ‎03-07-2007

Hi again!!!!

Has anybody succesfully used the Nios plugs library in NiosII??? I've been searching for the forum and can't find an answer.

Thanks.

Altera_Forum · ‎03-08-2007

No one???

I'm desperate, please someone can help me??? I'm lost in documentation!!!!! http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/tongue.gif

Seriously now, I just need to send and recieve 32/16 bits integers via ethernet in a simple way no protocols, threads or os needed, but I'm a mess pgrogramming http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/sad.gif .

Thanks in advance!

Altera_Forum · ‎03-08-2007

I'm not saying it will work, but have you tried changing

generate_sdk = "0";

to

generate_sdk = "1"; in your SOPC Builder project's PTF file?

I think this should generate a "Nios Classic" style SDK, where you'll, at least, have a shot at getting things to work. A quick "grepping" for plugs in the various components directory indicates that the source code is still there...as of 6.1.

Good luck!

- slacker

UPDATE:

Two more flags need to be set, as well:

legacy_sdk_support = "1";
allow_legacy_sdk = "1";

Altera_Forum · ‎03-09-2007

--- Quote Start ---

originally posted by slacker@Mar 8 2007, 06:50 PM

i'm not saying it will work, but have you tried changing

generate_sdk = "0";

to

generate_sdk = "1"; in your sopc builder project's ptf file?

i think this should generate a "nios classic" style sdk, where you'll, at least, have a shot at getting things to work. a quick "grepping" for plugs in the various components directory indicates that the source code is still there...as of 6.1.

good luck!

- slacker

update:

two more flags need to be set, as well:

legacy_sdk_support = "1"; allow_legacy_sdk = "1";

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--- Quote End ---

Thanks for your answer slacker!!!!! I`m trying it right now, hope it works.

Just one more question..... Do you know if a NiosI can be loaded into a StratixII board??? I've tryied it many times, but never succeded. Using Nios with a StritixII board will solve all my problems, since my project is working with no problems on a StratixI with NiosI.

Thanks again!!!

Altera_Forum · ‎03-09-2007

I'm a disaster! I can't make it work http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/sad.gif .

Anyway, this is the answer i got from altera when i asked them:

"Unfortunately, there is no resource available about using the Plugs Ethernet Library on a NiosII system.

Standalone lwip is a solution wich is no RTOS and single threaded. You can download it from www.niosforum.com"

Seems like I will have to learn how to use the standalone lwip http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/unsure.gif . By the way, anyone knows a good source of documentantion and/or examples for standalone lwip??

Thanks!