alt_flash_open_dev return 0

Nios® V/II Embedded Design Suite (EDS)

Support for Embedded Development Tools, Processors (SoCs and Nios® V/II processor), Embedded Development Suites (EDSs), Boot and Configuration, Operating Systems, C and C++

alt_flash_open_dev return 0

1,229 Views

Hi all

I want to read and write the 4M flash on DE2. I add a tri-state bridge and connect the CFI to it in the sopc builder. But when I use alt_flash_open_dev to open the flash, it always return 0. Could anyone give me some advise? I use quartusII 9.1 and niosII 9.1.

thx!

I made a mistake. I check the flash again. It is 1M and the type is 29LV800TE-90PFTN, the datasheet said it compatible with JEDEC standard. But the sopc is CFI standard. Can this be the problem?

ps: When I use the nios flash programmer, it shows no CFI table found. But the data shown below is correct. I set them by the control panel of DE2.

Link Copied

0 Replies

Community support is provided during standard business hours (Monday to Friday 7AM - 5PM PST). Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.