hedgecrw
commented
1 year ago I implemented the following test application by copy-and-pasting your code (and making some alterations to make it compilable):
static public void testFunction() throws InterruptedException
{
final CountDownLatch downLatch = new CountDownLatch(1);
SerialPort serialPort = SerialPort.getCommPort("com3");
serialPort.addDataListener(new SerialPortDataListener() {
@Override
public int getListeningEvents() {
return SerialPort.LISTENING_EVENT_DATA_AVAILABLE;
}
@Override
public void serialEvent(SerialPortEvent event) {
downLatch.countDown();
}
});
//first open success
System.out.println("Open 1: " + (serialPort.openPort() ? "SUCCESS" : "FAILURE"));
downLatch.await();
//close serialPort
System.out.println("Close 1: " + (serialPort.closePort() ? "SUCCESS" : "FAILURE"));
//second open fail
System.out.println("Open 2: " + (serialPort.openPort() ? "SUCCESS" : "FAILURE"));
System.out.println("Close 2: " + (serialPort.closePort() ? "SUCCESS" : "FAILURE"));
}
static public void main(String[] args)
{
System.out.println("\nUsing Library Version v" + SerialPort.getVersion());
for (int i = 0; i < 10; ++i)
try { testFunction(); } catch (InterruptedException e) { e.printStackTrace(); }
}Using this code, I am unable to replicate your issue. Do you still see the problem when using the above code directly?
nsargo
Hello sir,I encountered a problem, when I successfully opened the serial port for the first time, after reading the data, I closed the serial port, and when I opened it again, I could not open it. The version number I introduced was v2.10.2. This problem occurs on windows. The code is as follows：