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Altera_Forum's avatar
Altera_Forum
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15 years ago

FIFO -> DMA -> ONChipMem - Almost there.

Hello everyone my system consists of a fifo being filled inside my SOPC system, when it gets half full i get an IRQ and my DMA starts transfering DATA from the fifo to a onchip mem. My fifo has...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Humm instead of having my fifo incremented 1 by 1 i am getting it incremented 2 by 2 and only 17 results instead of 34..

That's weird

and here is my logic to write in the fifo 1 by 1 

begin
        contador <= contador +1;
        valid <= 0;
           if(usedw == 6'b100000)
            begin
                valid <= 1;
            end
            if(contador == 40000000)
            begin
                data_in <= data_in + 1;
                wrclk <=1;
            end
            if(contador == 50000000)
            begin
                wrclk <=0;
                contador <= 0;
            end
end