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In the SDK2 documentation for the new Lego-Scripting language events are used
as follows:
sensor Opto on 2
Opto is light as percent
event gloomy when Opto is 0..20
event dull when Opto is 30 .. 40
event intense when Opto is 80 .. 100
main {
start lightWatcher
trigger gloomy, dull, intense // initial level trigerring ?????
}
watcher lightWatcher monitor gloomy, dull, intense {
if gloomy { "stack" }
if dull { "stack" }
if intense {"stack" }
}
How would this translate to NQC?
The first part seems to be clear, but I'm not quite shure.
#define GLOOMY 0
#define DULL 1
#define INTENSE 2
#define OPTO Sensor_2
task main() {
SetSensot(OPTO, SENSOR_LIGHT);
SetEvent(GLOOMY,OPTO,EVENT_TYPE_LOW);
SetEvent(DULL,OPTO,EVENT_TYPE_NORMAL);
SetEvent(INTENSE,OPTO,EVENT_TYPE_HIGH);
CalibrateEvent(GLOOMY,0,20,10); / Is This OK??
until (EventState(GLOOMY) !=5);
CalibrateEvent(DULL,30,40,10);
until (EventState(DULL) !=5);
CalibrateEvent(INTENSE,80,100,10);
until (EventState(INTENSE) !=5);
Start LightWatcher;
}
But what about the event dispatch? Is somethig like this possible?
task LightWatcher() {
do while true() {
monitor (EVENT_MASK(GLOOMY) |
EVENT_MASK(DULL) |
EVENT_MASK(INTENSE) ) {
/ do something
}
catch {
switch ( ?????) { / What should be the expression?
GLOOMY:
/ perform GLOOMY action
DULL:
/ perform DULL action
INTENSE:
/ perform INTENSE action
default:
}
}
}
}
How can I react in LightWatcher to the correct triggering event?
Do I have to write a separate monitorong task for each event I want do to
handle in a specific way?
Or can I distinguish between events using EvenState() somehow?
What are the EventStates of Events of Boolean Events (0/1 or 0/2)?
What happens if we are in a handler and the same or another event fires
again?
TZS
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Message has 1 Reply:
 | | Re: Event dispatch
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| (...) I think the choice of whether to have a single task waiting on multiple events or multiple tasks each servicing a single event depends on the following questions: 1) Is there a single activity that should be happening that gets interrupted by (...) (24 years ago, 17-Dec-00, to lugnet.robotics.rcx.nqc)
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