/**
* <summary>
* Registers the callback function that is invoked on every periodic timed notification.
* <para>
* The callback is invoked only during the execution of <c>ySleep</c> or <c>yHandleEvents</c>.
* This provides control over the time when the callback is triggered. For good responsiveness, remember to call
* one of these two functions periodically. To unregister a callback, pass a null pointer as argument.
* </para>
* <para>
* </para>
* </summary>
* <param name="callback">
* the callback function to call, or a null pointer. The callback function should take two
* arguments: the function object of which the value has changed, and an <c>YMeasure</c> object describing
* the new advertised value.
* @noreturn
* </param>
*/
public async Task <int> registerTimedReportCallback(TimedReportCallback callback)
{
YSensor sensor;
sensor = this;
if (callback != null)
{
await YFunction._UpdateTimedReportCallbackList(sensor, true);
}
else
{
await YFunction._UpdateTimedReportCallbackList(sensor, false);
}
_timedReportCallbackPressure = callback;
return(0);
}