Martin R. Green wrote:
>
> I am planning to debounce a simple pushbutton connected to a PIC input with
> weak pullups enabled.  My strategy is to read the button every 10ms, and
> when 4 successive reads are the same, consider the level valid.  This will
> of course mean that the button level must be the same for at least 30ms to
> be considered valid.  The algorithm I am using will easily allow checking
> for up to 8 matching reads, any more than that and I'll have to change the
> method.
>
> Any comments on this?  Is 10ms about right?  How about using 4 successive
> reads, is this enough, too many, etc.?
>
> TIA - Martin R. Green
> elimar@bigfoot.c

This means that if your input is high, with a low going glitch
you are going to get an output...........

Nic