raise Event
Announce that something happened at an event source.
control.raiseEvent(0, 0)You use ||control:raise event|| to announce that something happened with the board or something special
happened in your program. You do this if there are other parts of your program that might want
to know about it.
If you’ve added some ||control:on event|| blocks to your program,
the code inside them will run if the src and value numbers are the same as those with
||control:raise event||. The src tells about where the event is coming from. You pick a number
for it to identify something like a sensor or a special situation in your program. If you want
to announce that it’s getting dark, you can make src something like 51 for the light sensor’s
source number. This means that anything you want to announce about the light sensor, you raise
event with 51.
Many events can happen to a single source (src). With the light sensor you can announce that
its getting darker or lighter. This is the cause of the event, the value. So, for the light
sensor (the source number 51) you might add two events for value: 1 for darker and 2 for lighter.
With the light sensor example, you tell the program that it’s getting darker:
control.raiseEvent(51, 1)Parameters
- src: the identification number (the source) of this event, such as:
10. - value: a number tells what the cause of the event is, like:
4.
Example
Register two events coming from source 22. Write to the console when
the events of 0 and 1 are raised.
const myNotify = 22;
control.runInParallel(function() {
for (let i = 0; i < 2; i++) {
pause(1000);
control.raiseEvent(myNotify, i);
}
})
control.onEvent(myNotify, 0, () => {
console.logValue("myNotify", 0)
})
control.onEvent(myNotify, 1, () => {
console.logValue("myNotify", 1)
})