event.java

这是一个以JAVA编写的程序,本人还没有试过,是一个简单的温度控制系统

/*---------------------------------------------------------------------------
 * Copyright (C) 1999-2001 Dallas Semiconductor Corporation, All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
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 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY,  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
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 */

package com.dalsemi.onewire.application.tag;

import com.dalsemi.onewire.adapter.DSPortAdapter;
import com.dalsemi.onewire.container.*;
import com.dalsemi.onewire.OneWireException;
import java.util.Vector;


/**
 * This class provides a default object for the Event type of a tagged 1-Wire device.
 */
public class Event
   extends    TaggedDevice
   implements TaggedSensor
{

   /**
    * Creates an object for the device.
    */
   public Event()
   {
      super();
   }

   /**
    * Creates an object for the device with the supplied address and device type connected
    * to the supplied port adapter.
    * @param adapter The adapter serving the sensor.
    * @param netAddress The 1-Wire network address of the sensor.
    *
    */
   public Event(DSPortAdapter adapter, String netAddress)
   {
      super(adapter, netAddress);
   }

   /**
    * The readSensor method returns the "max" string if the Sensor (a 
    * switch) has had activity since last time it was checked for activity.
    * @param--none.
    *
    * @return String  The "max" string associated with this Sensor.
    */
   public String readSensor()
   throws OneWireException
   {
      String returnString = "";
      byte[] switchState;
      SwitchContainer Container;
      Container = (SwitchContainer) DeviceContainer;

      if (Container.hasActivitySensing())  // if there is any activity, read it.
      {
         switchState = Container.readDevice();
         if (Container.getSensedActivity(getChannel(),switchState))
         {  
            returnString = getMax();
            // for future accurate readings, clear activity.
            Container.clearActivity();
            switchState = Container.readDevice(); // throw away the reading
         }
      }
      else
      {
         returnString = "";
      }

      return returnString;
   }
}