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Altera_Forum
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9 years ago

Set GPIO pins with multiple voltage levels

Hello, I am using a DE0-Nano FPGA and Quartus II 14.0. I am able to set the voltage of GPIO pins to either a high or low value based on a binary string of 0s and 1s. However, I would...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

As far as I know, this is not possible. FPGAs are binary devices. They output a voltage level or ground (or floating, of course). That's it.

You could just encode the two bits to the three values, like you've specified. Why do you need an extra voltage level?