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Altera_Forum
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16 years ago

Flash Device Access

Hej I am using my custom board where I have an external flash device attached..I want to read and write the flash device..I read the manual Nios II Software Developer's Handbook...and acording...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Hej Ura!

I tried to boot the processor from the flash and tried to program the flash using flash programmer..but i got this kind of error..

Using cable "USB-Blaster [USB-0]", device 1, instance 0x00

Resetting and pausing target processor: OK

No CFI table found at address 0x03000000

Leaving target processor paused

So then i tried the CLI for the nios flash programmer..and tried the debug option as well..and got the reply where there are some hex values..at differnt locations wrote into the flash..the manual says that i have to compare the values with the datasheet...which i did...and if i am thinking right...tht we have to just compare the values...i guesss the values were different....like after flash programing..value at location 10 was 33H where as in datasheet it was 51H...I am using AM29LV128M flash..which is i guess the altera supported device..