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Altera_Forum's avatar
Altera_Forum
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12 years ago

How fast can a FPGA sense?

I found a problem if i keep pressing and releasing the button. I found that the FPGA get crazy, can't really follow the logic. So i think it's the problem of the duration time of the button at ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

With this code the "reaction time" will be at most one clock period,so it all depends on what clock you are using.

The problem you are seeing could also be related to bouncing. Usually development kits don't have external debouncing hardware outside of the FPGA so you need to do it inside.