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Altera_Forum
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14 years ago

Altera DE2 Cyclone 2 Expansion Headers Configuration

Good afternoon everyone! I have a question regarding the configuration of the DE2's expansion headers. I have already searched online for tutorials in configuring them but so far have had no lu...
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Altera_Forum
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14 years ago

A basic point is unclear in your post: How did you connect the switches, are you actually changing the input level? The DE-2 on-board switches are double-throw switches, switching the inputs between GND and VCC33.

You can also use single-throw switches connecting to GND, but then you need to enable weak pull-up resistors for the inputs or connect external pull-ups.