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Hello Ramya, Francois,
Can you try to program it with .jic file? When converting the .sof file to the .jic file, please select EPCS device and disable EPCS ID check.
Please let me if this works.
That is exactly what I did !
This fails with the message: device ID doesn't match with the JTAG file ID...
Apparently the disable EPCS ID Check option has no effect 😞
I tried with several Quartus Programmer version : 15.1 - 16.0 - 17.0.1 --- Same results !
This new version of AN98558 gives some new tricks and I succeeded in programming my flash
The Cyclone V gets now its configuration bitsteram correctly and "CONF_DONE" brings up at end end of configuration process.
In order to program the S25FL256S we had to use the following nios2-flash-override.txt:
sector_size = 65536
sector_count = 512
(instead of the one indicated in AN98558)
Otherwise AN98558 worked perfectly
Thanks again !