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我想在java中使用RxTx通过串行端口检测设备，并且设备被编程为如果它从计算机接收到特定单词，它将回复“ok”，如果计算机接收到ok..它将停止发送单词并突出显示设备已连接。请帮我。还有一件事..我必须检查每个端口..请您编写一种自动循环通过端口直到检测到设备的方法。我的代码即使在无限循环中也只发送一次单词。代码：

private void cb1KeyPressed(java.awt.event.KeyEvent evt) {                               
    // TODO add your handling code here:
    try{
    l1.setText("Port: "+cb1.getSelectedItem().toString()+" is Selected");
    selectedPort = cb1.getSelectedItem().toString();// TODO add your handling code here
    rs.connect(selectedPort);
    for(;;)
    {
        CommPortSender.send(new ProtocolImpl().getMessage("KITM"));//send message
        if(pi.rmess().equalsIgnoreCase("OK"))//received message
        {
            l1.setText("The Device is attached to: "+selectedPort);
            CommPortSender.send(new ProtocolImpl().getMessage("OK ACK"));//send message
            break;
        }
        else
        {
            rs.disconnect(selectedPort);
            continue;
        }
    }
    }
    catch(Exception e){}   

}
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1 回答 1

-1 
 static void listPorts()
    {
        java.util.Enumeration<CommPortIdentifier> portEnum = CommPortIdentifier.getPortIdentifiers();
        while ( portEnum.hasMoreElements() ) 
        {
            CommPortIdentifier portIdentifier = portEnum.nextElement();
            System.out.println(portIdentifier.getName()  +  " - " +  getPortTypeName(portIdentifier.getPortType()) );
        }        
    }

    static String getPortTypeName ( int portType )
    {
        switch ( portType )
        {
            case CommPortIdentifier.PORT_I2C:
                return "I2C";
            case CommPortIdentifier.PORT_PARALLEL:
                return "Parallel";
            case CommPortIdentifier.PORT_RAW:
                return "Raw";
            case CommPortIdentifier.PORT_RS485:
                return "RS485";
            case CommPortIdentifier.PORT_SERIAL:
                return "Serial";
            default:
                return "unknown type";
        }
    }

5 分钟的谷歌搜索可以告诉你同样的事情。

于 2012-07-29T20:46:59.500 回答