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Altera_Forum's avatar
Altera_Forum
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11 years ago

Address correspondence VHDL/C

Hi,

I have a design with hardware writing 32-bit data in a 32-bit memory and software (written with Eclipse and running on a Nios II processor) reading it. I start reading from **_BASE address found in the “system.h” file (as an int* pointer) and then incrementing it by one for a moment. I read a simple byte that is repeating 4 times and so on…

So I don’t understand the address correspondence and what I’m reading. Could someone tell me?

Thanks.

PS: I often have a “database error” when trying to post and then I’ve lost my message and I should type everything another time. Is it a server problem? Should this be changed?

2 Replies

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

    To be more precise:

    my design is writing data(31 downto 0) but I'm reading data(7 downto 0)&data(7 downto 0)&data(7 downto 0)&data(7 downto 0). I know I'm mistaking somewhere but I don't know where. Please help me.