So I'm trying to make a simple debounce and I just can't figure out where I messed up. Here is the code:
def debounce(var, db):
if var == 1 and db == 0:
db = 1
elif var == 0:
db = 0
else:
var = 0
return var, db
while True:
mouse_buttons = get_mouse_buttons() # -This is the fuction that if the mouse's buttons are pressed
pressed, db = debounce(mouse_buttons[0], db)
mouse_buttons = (pressed, 0, 0)
print(mouse_buttons[0])
My expected output would be if I press the mouse button, then it would be a 1 for once, then turn 0 untill I release and press it again. The current code gives out a 1 for the first time, and no matter what, it only gives out 0 after. (I tested it, it has nothing to do with the function that returns the pressed buttons on the mouse.)
Just to confirm your test expectations
var | db | var,db
----------------------
0 0 0,0
0 1 0,0
1 0 1,1
1 1 0,1
If this is correct then I am not sure that your function does do that.
This is simpler - to reproduce the same logic table.
def debounce(var, db):
return var and not db, var
In this case when var is 0 - this will return 0,0 When var is 1 this will return 1,1 if db == 0 When var is 0 this will return 0,1 if db == 1
Addendum - when I re-ran your code with get_mouse_buttons() replaced with this :
def get_mouse_buttons():
return (int(input('>>').lower()=='y'), 0, 0)
Where you get to decide (by typing Y/y) whether the mouse button is pressed, it turns out that your debounce code - although clunky does actually do what is expected - your loop only prints a 1 when you type a 'y' initially or you go from not a 'y' to a 'y' - ie your code correctly detects the initial change from non-pressed to pressed.
Since you state your code doesn't work thereofre th clear suspect is your get_mouse_buttons() function - which you have claimed works ok.