I came up with the following routine for the following.  Let me know what
you think.
If the pushbutton is pressed and released less than 2 seconds, the program
runs MODE1 and if the button is held for
greater than 2 seconds, SET-UP mode is run


char count;
count=0;
if (input(PB1)==0)
        {
        delay_ms(20);           // Simple Debounce
        while (input(PB1)==0)
                {
                count++;
                delay_ms(10);
                }
        if (count < 200)
                RunMode1 ();
        else
                SetUpMode ();
        }

Anyone see any problems (debouncing etc...) with this simple routine???
Thanks much.

Dan




> > Just wanted to get some ideas on what the most efficient
> way to do the
> > following is using a polled (non-interrupt) routine:
> >
> > In my main program loop, the user has two pushbuttons to control the
> > following modes
> >
> > 1.  Press and release LEFT button to run mode 1
> > 2.  Press and hold LEFT button for 2 seconds to run mode 2
> > 3.  Press and release RIGHT button to run mode 3
> > 4.  Press and hold both LEFT and RIGHT buttons for 2
> seconds to run mode
> 4.
> >
> > I realize there are a million ways to do this, but I need
> some ideas on
> how
> > to do this most efficiently.
> > Thanks
> >
> > D
> >
>
> If you draw a state diagram you will see that requirement 4
> has conflicts. A
> state diagram will help you refine your protocol and identify
> unique events
> which you can use to simplify your code.
>
> Regards
> Sergio Masci
>
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