serialbuffer1.java

此程序是java写的关于串口的操作,对写串口数据,和读取串口数据等操作

package serial;

public class SerialBuffer
{
   private String Content ="";
   private String CurrentMsg, TempContent;
   private boolean available = false;
   private int LengthNeeded = 1;
   public synchronized String GetMsg(int Length)         //读取串口数据的函数
   {
     LengthNeeded = Length;
     notifyAll();
     if (LengthNeeded >= Content.length())
     {
       available = false;
       while (available == false)
       {
         if(Length-Content.length()==1||Length-Content.length()==2)
         {
           for(int i=0;i<Length-Content.length();i++)
           {
       	     Content = Content+"0";
           }
           return Content.substring(0,Content.length());
         }
         try
         {
           wait();
         } catch (InterruptedException e) { }
       }
     }  
     CurrentMsg  = Content.substring(0, LengthNeeded);
     TempContent = Content.substring(LengthNeeded);
     Content = TempContent;
     LengthNeeded = 1;
     notifyAll();
     return CurrentMsg;
   }
   public synchronized void PutChar(int c)                  //写数据到串口的函数
   {
     Character d = new Character((char) c);
     Content = Content.concat(d.toString());
     if (LengthNeeded <= Content.length())
     {
       available = true;
     }
     notifyAll();
   }
}