FrequencyCounterPhidget.java

Go to the documentation of this file.

/*
 * Copyright 2012 Phidgets Inc.  All rights reserved.
 */

package com.phidgets;
import java.util.Iterator;
import java.util.LinkedList;
import com.phidgets.event.*;
public final class FrequencyCounterPhidget extends Phidget
{
        public FrequencyCounterPhidget () throws PhidgetException
        {
                super (create ());
        }
        private static native long create () throws PhidgetException;
        public static final int PHIDGET_FREQUENCYCOUNTER_FILTERTYPE_ZERO_CROSSING = 1;
        public static final int PHIDGET_FREQUENCYCOUNTER_FILTERTYPE_LOGIC_LEVEL = 2;
        public static final int PHIDGET_FREQUENCYCOUNTER_FILTERTYPE_UNKNOWN = 3;
        public native int getFrequencyInputCount () throws PhidgetException;
        public native double getFrequency (int index) throws PhidgetException;
        public native long getTotalCount (int index) throws PhidgetException;
        public native long getTotalTime (int index) throws PhidgetException;
        public native int getTimeout (int index) throws PhidgetException;
        public native void setTimeout (int index, int timeout) throws PhidgetException;
        public native boolean getEnabled (int index) throws PhidgetException;
        public native void setEnabled (int index, boolean state) throws PhidgetException;
        public native int getFilter (int index) throws PhidgetException;
        public native void setFilter (int index, int type) throws PhidgetException;
        public native void reset (int index) throws PhidgetException;

        private final void enableDeviceSpecificEvents (boolean b)
        {
                enableFrequencyCounterCountEvents (b && frequencyCounterCountListeners.size () > 0);
        }
        public final void addFrequencyCounterCountListener (FrequencyCounterCountListener l)
        {
                synchronized (frequencyCounterCountListeners)
                {
                        frequencyCounterCountListeners.add (l);
                        enableFrequencyCounterCountEvents (true);
        }} private LinkedList frequencyCounterCountListeners = new LinkedList ();
        private long nativeFrequencyCounterCountHandler = 0;
        public final void removeFrequencyCounterCountListener (FrequencyCounterCountListener l)
        {
                synchronized (frequencyCounterCountListeners)
                {
                        frequencyCounterCountListeners.remove (l);
                        enableFrequencyCounterCountEvents (frequencyCounterCountListeners.size () > 0);
        }} private void fireFrequencyCounterCount (FrequencyCounterCountEvent e)
        {
                synchronized (frequencyCounterCountListeners)
                {
                        for (Iterator it = frequencyCounterCountListeners.iterator (); it.hasNext ();)
                                ((FrequencyCounterCountListener) it.next ()).frequencyCounterCounted (e);
                }
        }
        private native void enableFrequencyCounterCountEvents (boolean b);
}