?? serialbuffer.java
字號:
package serial;
/**
*
* This class implements the buffer area to store incoming data from the serial
* port.
*
*/
public class SerialBuffer {
private String Content = "";
private String CurrentMsg = "";
private String TempContent = "";
private boolean available = false;
private int LengthNeeded = 1;
/**
*
* This function returns a string with a certain length from the incomin
* messages.
*
* @param Length
* The length of the string to be returned.
*
*/
public synchronized String GetMsg(int Length) {
LengthNeeded = Length;
notifyAll();
if (LengthNeeded > Content.length()) {
available = false;
while (available == false) {
try {
wait();
} catch (InterruptedException e) {
}
}
}
CurrentMsg = Content.substring(0, LengthNeeded);
TempContent = Content.substring(LengthNeeded);
Content = TempContent;
LengthNeeded = 1;
notifyAll();
return CurrentMsg;
}
/**
*
* This function stores a character captured from the serial port to the
* buffer area.
*
* @param t
* The char value of the character to be stored.
*
*/
public synchronized void PutChar(int c) {
Character d = new Character((char) c);
Content = Content.concat(d.toString());
if (LengthNeeded < Content.length()) {
available = true;
}
notifyAll();
}
}
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