918af4f3ac
* change simulator svg * change radio image * Remove google fonts cdn * change color of 'advanced' button * font fix * font fix 2 * display fix * change fullsceen simulator bg * Continuous servo * handle continuous state * adding shims * update rendering for continuous servos * fixing sim * fix sig * typo * fix sim * bump pxt * bump pxt * rerun travis * Input blocks revision - add Button and Pin event types - merge onPinPressed & onPinReleased in new onPinEvent function - create new onButtonEvent function * update input blocks in docs and tests * remove device_pin_release block * Hide DAL.x behind Enum * bring back deprecated blocks, but hide them * shims and locales files * fix input.input. typing * remove buildpr * bump V3 * update simulator aspect ratio * add Loudness Block * revoke loudness block * Adds soundLevel To be replaced by pxt-common-packages when DAL is updated. * Remove P0 & P3 from AnalogPin Co-authored-by: Juri <gitkraken@juriwolf.de>
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wait For Event
Stop running the current code and wait for an event.
control.waitForEvent(0, 0)
You might want your code to stop for a while until some event you're expecting happens.
If you want your code to pause until a known event happens, use a ||control:wait for event|| block.
A known event is something you identify that happens on the board or in your program.
An event has both a source and a cause. The source is where the event comes from, like a sensor or
some condition in your program. The cause is what made the event happen at the source.
You assign numbers for your event sources and causes. These numbers are used by ||control:raise event|| to announce to your program that an event just happened.
As an example, you could make a timer that always causes an event every 100 milliseconds. The source
number for the timer is 6 and the cause value is 1. The program could wait for one of the time
events like this:
const myTimer = 6;
const timerTimeout = 1;
control.runInParallel(function() {
while (true) {
control.waitMicros(100000)
control.raiseEvent(myTimer, timerTimeout)
}
})
control.waitForEvent(myTimer, timerTimeout)
Parameters
- id: 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 #example
Make a timeout timer to signal every 2 seconds. Wait two times and write to the console each time.
const myTimer = 6;
const timerTimeout = 1;
control.runInParallel(function() {
while (true) {
pause(2000)
control.raiseEvent(myTimer, timerTimeout)
}
})
control.waitForEvent(myTimer, timerTimeout)
console.log("Timer timeout")
control.waitForEvent(myTimer, timerTimeout)
console.log("Timer timeout")
This is an advanced API. For more information, see the @boardname@ runtime messageBus documentation.