AVR-Chat

WRT Keyboard Bounce:

If you use an interrupt driven ( timer )  kbd scanner
then you can
just look at successive scan cycles and if you see 3
cycles ( for
example ) in a row which return the same value then
you output a valid
key value.

A benefit of doing things this way is that there is a
deterministic
amount of time to be scheduled to scanning the
keyboard. In our case
the interrupt is also used to change the current LED
which is being
displayed on a multiplexed display panel.  This
predictability allows
me to budget for the other work to be completed & have
a bit of an
idea as to what is possible.

Cheers

Don

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