Programming a Scoring Box Help

[Katlucas]

Hey Gang! I'm using my senior electrical engineering design to make a wireless scoring box.

I am using an arduino nano to be the microcontroller. My main concern is how to do the lockout of the second fencer after having been hit.


I have the current logic as

if (avalue==high) //please note that the A line is a filtered signal that if high means you got hit
{
lockout++;
}

for (int i=0; i<=foiltouchduration_min; i++) {

if(avalue==HIGH)
{
lockout++;
}

if(Cvalue==HIGH & Bvalue==HIGH & i==foiltouchduration_min & lockout!=foil_window) //if not inlockout
{
output_colored_light();
lockout=0; //clear lockout time to zero
}

else if(foilCvalue==HIGH & foilBFILTvalue==LOW & i==foiltouchduration_min & lockout!=foil_window )
{
output_white_light();
lockout=0;
}
}


if (lockout==foil_window) //if lockout timer has reached limit time
{
lockout=0;
delay(2000); //delay for 2 full seconds
}

}


The great thing is that the logic works great, except for lockout for when the fencer gets hit and that its slow. (obviously this is not the full code) My team mate noted that foil_window>foiltouchduration so it will never get to the proper time.



Any inspirations on how to do this from my fencing programmers? Any help would be greatly appreciated! I have looked at Eric's open source machine, but that is all in assembly and is hard for me understand.


Anyway, thanks again!

[22hansen22]

To be correct instead of sampling with a for loop you must have interrupts of pin state changed,
then you need a debouncing procedure to avoid noise and meet FIE requirements of minimun time to touch required

[jjefferies]

To be correct instead of sampling with a for loop you must have interrupts of pin state changed,
then you need a debouncing procedure to avoid noise and meet FIE requirements of minimun time to touch required

Could you explain your reasoning. Polling within a while loop could be the main loop with the debounce a part of the polling. Past experience has been that polling has advantages over an interrupt off unknown hardware and the OP hasn't indicated what his inputs are to be. Ach, the OP said "wireless" so there's probably no debounce needed just a signal received from some source. Think it depends on how he cares to distribute the functionality among the various parts of the system.

Question to OP, my assumption is that you are having other pieces as the wireless and the arduino nano chip as the timing. What functionality are you wanting to include in the project? I'm just wondering if the chip has enough I/O for you.