嘿，我正在做一个程序，我在其中读取串行数据并将其显示在图表上。我的 java 项目中有两个文件：一个负责图形显示，另一个仅用于串行处理。该程序的要求之一是让我的 arduino 发送数据断开连接，在图表上显示一条消息，重新连接 arduino，然后让该消息消失并在没有用户交互的情况下再次发送数据。我在下面有我的串行文件。我不确定如何编辑它以查看它已与 PC 断开连接，然后在没有人工交互的情况下重新连接。谢谢
public class SerialTest implements SerialPortEventListener {
SerialPort serialPort;
private static final String PORT_NAMES[] = {
"COM11", // Windows
};
String turnon = "X";
String inputLine;
String temp;
String temp1;
String thirdDC;
static boolean deviceConn;
int value = 0;
int count;
String stop = "STOP";
String y = "Y";
String z = "Z";
String pop;
Double x;
int n;
int working;
private BufferedReader input;
/** The output stream to the port */
OutputStream output;
/** Milliseconds to block while waiting for port open */
private static final int TIME_OUT = 2000;
/** Default bits per second for COM port. */
private static final int DATA_RATE = 9600;
public void initialize() {
working = 1;
CommPortIdentifier portId = null;
Enumeration portEnum = CommPortIdentifier.getPortIdentifiers();
while (portEnum.hasMoreElements()) {
CommPortIdentifier currPortId = (CommPortIdentifier) portEnum.nextElement();
for (String portName : PORT_NAMES) {
if (currPortId.getName().equals(portName)) {
portId = currPortId;
break;
}
}
}
if (portId == null) {
thirdDC = "Could not find COM Port. Error";
System.out.println(thirdDC);
return;
}
try {
serialPort = (SerialPort) portId.open(this.getClass().getName(),
TIME_OUT);
serialPort.setSerialPortParams(DATA_RATE,
SerialPort.DATABITS_8,
SerialPort.STOPBITS_1,
SerialPort.PARITY_NONE);
input = new BufferedReader(new InputStreamReader(serialPort.getInputStream()));
output = serialPort.getOutputStream();
serialPort.addEventListener(this);
serialPort.notifyOnDataAvailable(true);
} catch (Exception e) {
System.err.println(e.toString() + "BLAHHHHH");
}
}
public synchronized void close() {
if (serialPort != null) {
serialPort.removeEventListener();
serialPort.close();
}
}
public synchronized void serialEvent(SerialPortEvent oEvent) {
String stop = "ERROR";
if (oEvent.getEventType() == SerialPortEvent.DATA_AVAILABLE) {
deviceConn = true;
try {
inputLine=input.readLine();
if (inputLine.equals(y)){
System.out.println(y);
temp1 = "OFF";
value = 0;
}
if (inputLine.equals(z)){
System.out.println(z);
temp1 = "ON";
value = 0;
}
if (inputLine.equals(stop)){
System.out.println(stop);
temp = "ERROR";
value = 1;
}
x = Double.parseDouble(inputLine);
if (x > 0){
temp = inputLine;
System.out.println(x);
value = 0;
}
} catch (Exception e) {
}
}
}
public static void main(String[] args) throws Exception {
Thread t=new Thread() {
public void run() {
try {
Thread.sleep(1000);
}
catch (InterruptedException ie) {}
}
};
t.start();
System.out.println("Started");
}
}