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Altera_Forum's avatar
Altera_Forum
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16 years ago

DMA Transfer Issue

Hi, I have build a system which has NIOS II, DDR SDRAM controller, On-Chip RAM, UART,DMA Controller. My program memory is DDR SDRAM. I have connected DMA controller between DDR SDRAM and On-Chi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Hi

I am surprised to see that in my program this line of code works IOWR(DDR_Write_Address,0,data);

and this one does not give me the correct result

IOWR(DDR_SDRAM_BASE,DDR_Write_Address,data);

this remains same for both

iprintf("Written %08x to address %08x \n", data, DDR_Write_Address);

DDR_Write_Address += 4;

data += 1;

in first line of code DDR_Write_Address = base address which works :)

in second line of code DDR_Write_Address = offset address which does not give me result i want :mad: :mad:

any input ....idea???