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Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Strange switch, cant justify this behaviour

Hi, I made this differentiated switch. But.. upon usage it turns out to be inverted. Contrary to what i deem to be logical behaviour? Any thoughts? else if (switch < register) //* so the...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

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It depends how your push button is wired. If it is connected so that the push button is between the pin and ground, and there is a pull-up resistor, then when you press the switch it will actually go from high to low.

--- Quote End ---

Yes I wanted to figure that out so I attached a LED to see it it would light up. And it did. I also set the register to be 0.

None of that had any effect..