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Altera_Forum's avatar
Altera_Forum
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20 years ago

Using alt_flash_open_dev

Hello, I have a Nios2 system that runs from flash (flash = program memory). My program needs to access flash at a certain moment, it needs to write/read some data to it. The alt_flash_open_de...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

Hi,

I have been doing some trials with the flash access:

- If my program runs from flash, I can't access the flash as a data memory (alt_flash_open_dev returns FAIL).

- If my program runs from internal data memory, I can access the flash as a data memory (alt_flash_open_dev returns PASS).

- if my program runs from flash but the flash access is placed in a seperate section that is located in FPGA internal RAM, I can't access the flash (alt_flash_open_dev returns FAIL).

I think that the latter case should work.

What do you think about this?

thanks,

Dolphin