Looking for routine to debounce buttons in C

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micpic

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c debounce

Hello,

has somebodey a routine to debounce some buttons (written in c)?
I am searching for something which worjs without delays, so that the µC isn´t blocked while debouncing.
 

debounce em c

u don't require special routine for for debouncing u might make some small delay routine then check again if the button is pressed
 

Re: Debouncing in C

You could use a while loop like this:

int button=0

//when the button is initially pressed, set the variable button=1

while(button == 1)
if(button==1)
button==1
elseif(button!=1)
button=0
break //break out of the loop once the button has been let go
endif
end
 

Re: Debouncing in C

micpic said:
Hello,

has somebodey a routine to debounce some buttons (written in c)?
I am searching for something which worjs without delays, so that the µC isn´t blocked while debouncing.
Click to expand...

Then use timers , and timer interrupt

/Bingo
 

Debouncing in C

you can use a rutine in timer

like

if ( key != old_key ) {
debounce--;
if ( debounce == 0 ){
key_pressed = key;
debounce = 100;
}
}
else{
debounce = 100;
}
 

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