--- In Matthieu Crapet <> wrote:
>
> Hi,
>
> I am writing actually a "keyboard input" driver based on that idea.
>
> I use the DIO1 header : port B. Can fit a 4x4 keypad.
>
> I setup 4 interrupts and use the debounce feature of the ep93xx.
> I my isr I disable interrupts and schedule a tasklet to check row/col
> status then I setup a timer HZ/10 (TS-7200)
> and then re-enable interrupts.
>
> It works. Actually I only tested it on a 3x4 keypad, I am waiting to
> have a 4x4 keypad for more tests.
>
> Regards,
> Matthieu
>
>
Hi Matthieu,
That seems to be just what I am looking to do. So you basically
enable the debounce feature in the PORTADB register when loading your
driver, and then that takes care of it? I overlooked the debounce
feature when reading through the EP93xx manual. It appears that the
interrupt will not be sent until after the key is considered
debounced, so what is the use of the timer?
Thanks,
Brandon
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