I have an excercise that conciste to program a 3x4 button keypad.
However, each button must have:
> Display the number of the button on the LCD
> Save a value of a defined position.
the first idea that I try to apply is: The implementation of a short and long button action.
For this I read the functions of Peter Dannegger that not seem the way to the case of a keypad.
the equipment I use is the suivatn:
Is there anyone who can offer me an alternative idea, if someone can give me a code that made the action to the case of a keypad.