javax.comm.commportidentifier.html

java串口通讯api

    <dt> <b>Returns:</b>
    <dd> a CommPortIdentifier object
    <dt> <b>Throws:</b> <a href="javax.comm.NoSuchPortException.html#_top_">NoSuchPortException</a>
    <dd> if the port object is invalid
  </dl></dd>
</dl>
<a name="addPortName(java.lang.String, int, javax.comm.CommDriver)"><img src="images/green-ball.gif" width=12 height=12 alt=" o "></a>
<a name="addPortName"><b>addPortName</b></a>
<pre>
 public static void addPortName(String portName,
                                int portType,
                                <a href="javax.comm.CommDriver.html#_top_">CommDriver</a> driver)
</pre>
<dl>
  <dd> Adds <CODE>portName</CODE> to the list of ports.
<p>
  <dd><dl>
    <dt> <b>Parameters:</b>
    <dd> portName - The name of the port being added
    <dd> portType - The type of the port being added
    <dd> driver - The driver representing the port being added
    <dt> <b>See Also:</b>
    <dd> <a href="javax.comm.CommDriver.html#_top_">CommDriver</a>
  </dl></dd>
</dl>
<a name="getName()"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="getName"><b>getName</b></a>
<pre>
 public String getName()
</pre>
<dl>
  <dd> Returns the name of the port. The port name should be identifiable
 by the user. Ideally, it should be the label on the hardware.
 For example, "COM1" and "COM2" on PCs; "Serial A" and "Serial B"
 on Sun Ultra workstations. The port name may be stored by an application
 and subsequently used to create a <CODE>CommPortIdentifier</CODE>
 object using <CODE>getPortIdentifier(String portName)</CODE> method.
<p>
  <dd><dl>
    <dt> <b>Returns:</b>
    <dd> the name of the port
  </dl></dd>
</dl>
<a name="getPortType()"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="getPortType"><b>getPortType</b></a>
<pre>
 public int getPortType()
</pre>
<dl>
  <dd> Returns the port type.
<p>
  <dd><dl>
    <dt> <b>Returns:</b>
    <dd> portType - PORT_SERIAL or PORT_PARALLEL
  </dl></dd>
</dl>
<a name="open(java.lang.String, int)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="open"><b>open</b></a>
<pre>
 public synchronized <a href="javax.comm.CommPort.html#_top_">CommPort</a> open(String appname,
                                   int timeout) throws <a href="javax.comm.PortInUseException.html#_top_">PortInUseException</a>
</pre>
<dl>
  <dd> Opens the communications port. <CODE>open</CODE> obtains
 exclusive ownership of the port. If the port is owned by some
 other application, a <CODE>PORT_OWNERSHIP_REQUESTED</CODE> event
 is propagated using the <CODE>CommPortOwnershipListener</CODE>
 event mechanism. If the application that owns the port calls
 <CODE>close</CODE> during the event processing, then this
 <CODE>open</CODE> will succeed.
 There is one <CODE>InputStream</CODE> and one <CODE>OutputStream</CODE>
 associated with each port. After a port is opened with
 <CODE>open</CODE>, then all calls to <CODE>getInputStream</CODE>
 will return the same stream object until <CODE>close</CODE>
 is called.
<p>
  <dd><dl>
    <dt> <b>Parameters:</b>
    <dd> appname - Name of application making this call.
              This name will become the owner of the port.
              Useful when resolving ownership contention.
    <dd> timeout - time in milliseconds to block waiting
              for port open.
    <dt> <b>Returns:</b>
    <dd> a <CODE>CommPort</CODE> object
    <dt> <b>Throws:</b> <a href="javax.comm.PortInUseException.html#_top_">PortInUseException</a>
    <dd> if the port is in use by some
			    other application that is not willing to relinquish
              ownership
  </dl></dd>
</dl>
<a name="getCurrentOwner()"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="getCurrentOwner"><b>getCurrentOwner</b></a>
<pre>
 public String getCurrentOwner()
</pre>
<dl>
  <dd> Returns the owner of the port.
<p>
  <dd><dl>
    <dt> <b>Returns:</b>
    <dd> current owner of the port.
  </dl></dd>
</dl>
<a name="isCurrentlyOwned()"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="isCurrentlyOwned"><b>isCurrentlyOwned</b></a>
<pre>
 public boolean isCurrentlyOwned()
</pre>
<dl>
  <dd> Checks whether the port is owned.
<p>
  <dd><dl>
    <dt> <b>Returns:</b>
    <dd> boolean	<CODE>true</CODE> if the port is owned by some application,
 		<CODE>false</CODE> if the port is not owned.
  </dl></dd>
</dl>
<a name="addPortOwnershipListener(javax.comm.CommPortOwnershipListener)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="addPortOwnershipListener"><b>addPortOwnershipListener</b></a>
<pre>
 public void addPortOwnershipListener(<a href="javax.comm.CommPortOwnershipListener.html#_top_">CommPortOwnershipListener</a> listener)
</pre>
<dl>
  <dd> Registers an interested application so that it can receive notification
 of changes in port ownership. This includes notification of the following events:
 <UL>
 <LI>
 <CODE>PORT_OWNED</CODE>: Port became owned
 <LI>
 <CODE>PORT_UNOWNED</CODE>: Port became unowned
 <LI>
 <CODE>PORT_OWNERSHIP_REQUESTED</CODE>: If the application owns this port
 and is willing to give up ownership, then it should call
 <CODE>close</CODE> now.
 </UL>
 The <CODE>ownershipChange</CODE> method of the listener registered
 using <CODE>addPortOwnershipListener</CODE> will be called with one
 of the above events.
<p>
  <dd><dl>
    <dt> <b>Parameters:</b>
    <dd> listener - a <CODE>CommPortOwnershipListener</CODE> callback object
  </dl></dd>
</dl>
<a name="removePortOwnershipListener(javax.comm.CommPortOwnershipListener)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="removePortOwnershipListener"><b>removePortOwnershipListener</b></a>
<pre>
 public void removePortOwnershipListener(<a href="javax.comm.CommPortOwnershipListener.html#_top_">CommPortOwnershipListener</a> lsnr)
</pre>
<dl>
  <dd> Deregisters a <CODE>CommPortOwnershipListener</CODE> registered using
 <CODE>addPortOwnershipListener</CODE>
<p>
  <dd><dl>
    <dt> <b>Parameters:</b>
    <dd> listener - The CommPortOwnershipListener object that was
		previously registered using addPortOwnershipListener
  </dl></dd>
</dl>
<a name="open(java.io.FileDescriptor)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="open"><b>open</b></a>
<pre>
 public <a href="javax.comm.CommPort.html#_top_">CommPort</a> open(FileDescriptor fd) throws <a href="javax.comm.UnsupportedCommOperationException.html#_top_">UnsupportedCommOperationException</a>
</pre>
<dl>
  <dd> Opens the communications port using a <CODE>FileDescriptor</CODE>
 object on platforms that support this technique.
<p>
  <dd><dl>
    <dt> <b>Parameters:</b>
    <dd> fd - The <CODE>FileDescriptor</CODE> object used to build
a <CODE>CommPort</CODE>.
    <dt> <b>Returns:</b>
    <dd> a <CODE>CommPort</CODE> object.
    <dt> <b>Throws:</b> <a href="javax.comm.UnsupportedCommOperationException.html#_top_">UnsupportedCommOperationException</a>
    <dd> is thrown
                  on platforms which do not support this functionality.
  </dl></dd>
</dl>
<hr>
<pre>
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