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Altera_Forum
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14 years ago

how to use external signal on nios2 in software

I have add a pin namely “enb” on nios processor as display in attached print-screen, every time this pin got high pulse. my IORD_..function read this pulse and start doing my further job. ...
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Altera_Forum
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14 years ago

What's driving the pin? Did you assign enb to any pins?

If the signal is coming from an external interface (eg a GPIO) you need to assign enb as an "input" and assign it to the corresponding pin in assignment editor.