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Altera_Forum's avatar
Altera_Forum
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14 years ago

How to test the Avalon MM interface in C?

Hello,

I have written a program in VHDL which is compatible with the Avalon MM slave interface and i have generated it in SOPC-builder.

I would like to write a small test program in C to see if it works as it should but I don't know how to communicate with it (how to write and read from it). Should I use IOWR and IORD in some kind of way or do someone have a better suggestion? I am kind of new with this so I would really appreciate an answer.

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    Yes, just use the IORD and IOWR macros in a software uploaded to a Nios CPU to access your component. When generating the BSP you should get a system.h file that contains the base address of your component.

    Another alternative if you want to test it from your PC without using a Nios CPU is the system console tool.