Nios® II Embedded Design Suite (EDS)
Support for Embedded Development Tools, Processors (SoCs and Nios® II processor), Embedded Development Suites (EDSs), Boot and Configuration, Operating Systems, C and C++
Intel Support hours are Monday-Fridays, 8am-5pm PST, except Holidays. Thanks to our community members who provide support during our down time or before we get to your questions. We appreciate you!

Need Forum Guidance? Click here
Search our FPGA Knowledge Articles here.
12437 Discussions

Nios birdge to Arm QSPI - registers dont get update

Honored Contributor II



I have FPGA fabric between the NIOS and the QSPI peripheral (0xff70500) 


Basically I can read and write the QSPI registers, 

But seems that the DATA QSPI (which is FIFO and not regular mem) behave strange via the bridge. 


look like it doesn't get update and sometime keep give the old data and not the new one (like cache problem). 


It do get update if we stop with the debugger just before the reading operation. 


Is there any "UpdteNow" or "refrash" command I missed? 


Again, the fabric lead to QSPI FIFO (I think this what make the problem) 




0 Kudos
0 Replies