java - 串口事件值和串口值的区别

Question

我正在使用 jssc 从串行端口读取值。一旦我写入串行端口，就会调用以下回调。在该回调中，我可以从事件和串行端口本身获取值，它们都包含不同的值。我想知道串行端口值和串行事件值之间的区别事件是否包含来自串行端口的值？

public class PortReader implements SerialPortEventListener {

SerialPort serialPort;
public PortReader(SerialPort serialPort) {
    this.serialPort = serialPort;
}

@Override
public void serialEvent(SerialPortEvent event) {
    System.out.println("started");
    if (event.isRXCHAR() && event.getEventValue() > 0) {
        try {
            String receivedData =  serialPort.readString(event.getEventValue());
            System.out.println("Received response: " + receivedData);
            receivedData = serialPort.readString();
            System.out.println("Received response: " + receivedData);
        } catch (SerialPortException ex) {
            System.out.println("Error in receiving string from COM-port: " + ex);
        }
    }
}
}

Answer 1

根据 JSSC 的文档，事件值是特定于 jssc 的，而事件携带的数据来自串行端口。