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Thank you for sharing the document. I have already used that tutorial. In that tutorial Avalon memory map is used. In my system I am using ARM processor instead of NIOS. I am not sure whether I can interface my custom peripheral using Avalon memory map in the case ARM. I have come across posts saying interconnect bridges can solve this. But didn't find a document on that.
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Yes the QSYS will connect the peripherals correctly, both AXI and Avalon. I already tried it and it works.
On ARM C coding, you will need a pointer that targets the address of that custom peripheral (with lightweight offset. Check the tutorials).
Did you try to use the ARM with gpio or any pre-built peripheral from the QSYS tool?
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