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Altera_Forum's avatar
Altera_Forum
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9 years ago

Nios talking with a my VHDL peripheral

I am trying to develop a system with my development kit which basically consists of: I provide my input data through the four pushbuttons to Nios Nios, with this information, accesses - thro...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Following Figure 1-1, the easiest and simplest way is to simply add (2) more PIO instances just like how the LED was handled. (one for your addr# 1 NIOS->peripheral, one for addr# 2 peripheral->NIOS).

Then connect the PIO top level "conduit" wires to your VHDL peripheral.

Getting beyond a trivial example, you would want to google for the topic of creating Qsys "components".

e.g.

https://www.youtube.com/watch?v=v6rhbvablo8

https://www.altera.com/support/support-resources/design-examples/intellectual-property/embedded/nios-ii/exm-checksum-acc.html

ftp://ftp.altera.com/up/pub/altera_material/13.0/tutorials/making_qsys_components.pdf