Timed looped event
You can also use other triggers to stop some sequence that is already
in progress, just by calling dothis.stop() if that condition is
met.
It is also possible to have a continuous sequence running in the background, when nothing else is happening.
Upload the timed-looped-event sketch.
Now, the LED should be doing a simple blink. But if you press the button, it should stop the background loop, do the preset timed sequence, and then resume the background loop.
CHECKPOINT!
If you look at the program, we have a new sequence of integer values
and timings for the background event declared before setup():
int val2[] = {1, 0};
int tim2[] = {1000, 1000};
This is the blink pattern. Inside setup(), we are starting the
background loop by calling dothis.loopstart(val2, tim2, 2);. The
2 at the end is just the length of the background loop.
- Try changing the
tim2[]values to make the background loop go faster. - Try increasing the size of
val2[]andtim2[]to make the background loop more complicated.
CHECKPOINT!
Note the dothis.update() still needs to be called inside loop() at least once.
The looped event can be stopped at anytime by calling loopstop(). It can be restarted by using loopstart(), as
we have done inside setup().
Triggering a timed sequence on the same Pb_timedevent object
will pause the loop to let the new sequence complete, then resume the
loop. This can be useful if your pinball game needs to have one kind of LED
blink pattern always going on, and change briefly to another kind when
something special happens.