I need to keep score of 3 switches and send this to a display but how

Archiver

Hi, I'm having a small problem. I want to count scores of 3 seperate
buttons. Each button counts from 0 up to 99 and displaying this on a
led-display. I have connected 6 display's where I keep track of the
score. Displaying score is no problem. I have a problem with counting
and displaying at the same time. When I hit a button, it immidiatly
starts counting till 99. (I need to continuosly update my led-display
to make it visseble, thereby I constant pass my button command.)
I cannot make much delay's in the program, or else my display aint
working fine.
How do I count one pushcount at a time ????

Thanks for your thinking about this!!

Greetings, Marko

Archiver

First do not just look at the state of the button but rather look for its
change of state, by waiting till the button is released you eliminate bounce
and repeat.
Secondly try reading all 3 buttons at the same time, example assuming they
are connected to pins 0 - 2 use INA anded with 7 to ignore the fourth bit.

Lonnie - KF4HAZ -

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From: "smalcor" <Smalcor.AmusementsProducts@
> Hi, I'm having a small problem. I want to count scores of 3 seperate
> buttons. Each button counts from 0 up to 99 and displaying this on a
> led-display. I have connected 6 display's where I keep track of the
> score. Displaying score is no problem. I have a problem with counting
> and displaying at the same time. When I hit a button, it immidiatly
> starts counting till 99. (I need to continuosly update my led-display
> to make it visseble, thereby I constant pass my button command.)
> I cannot make much delay's in the program, or else my display aint
> working fine.
> How do I count one pushcount at a time ????
>
> Thanks for your thinking about this!!
>
> Greetings, Marko

Archiver

>Hi, I'm having a small problem. I want to count scores of 3 seperate
>buttons. Each button counts from 0 up to 99 and displaying this on a
>led-display. I have connected 6 display's where I keep track of the
>score. Displaying score is no problem. I have a problem with counting
>and displaying at the same time. When I hit a button, it immidiatly
>starts counting till 99. (I need to continuosly update my led-display
>to make it visseble, thereby I constant pass my button command.)
>I cannot make much delay's in the program, or else my display aint
>working fine.
>How do I count one pushcount at a time ????
>
>Thanks for your thinking about this!!
>
>Greetings, Marko

Do this sort of thing in a loop, a "state machine":

' buttons on p0 to p2, active low 0 when pressed
x0 var nib
x1 var nib
xx var nib
c0 var byte
c1 var byte
c2 var byte
scan:
x1 = inA ' get state of all 3 buttons
xx=x1^x0&x1 ' detect changes, bit =1 when button is released
x0=x1 ' update old state of all 3 buttons
C0=C0+xx.bit0 ' update counts
C1=C1+xx.bit1
C2=C2+xx.bit2
debug dec C0,tab,dec C1, tab, dec C2, CR ' to display
goto scan ' over and over


I hope that helps

-- Tracy