java如何实现同时控制多个串口设备
时间: 2023-08-19 15:04:01 浏览: 48
要实现同时控制多个串口设备,可以使用Java中的多线程技术。可以为每个串口设备创建一个线程,然后在线程中进行读写操作,实现同时控制多个串口设备的功能。
以下是一个简单的示例代码,演示如何同时控制两个串口设备:
```java
import gnu.io.*;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class MultiSerialPortControl {
private static final int BAUD_RATE = 9600;
private static final int DATA_BITS = 8;
private static final int STOP_BITS = 1;
private static final int PARITY = SerialPort.PARITY_NONE;
public static void main(String[] args) {
try {
SerialPort serialPort1 = (SerialPort) CommPortIdentifier.getPortIdentifier("COM1").open("MultiSerialPortControl", 2000);
SerialPort serialPort2 = (SerialPort) CommPortIdentifier.getPortIdentifier("COM2").open("MultiSerialPortControl", 2000);
serialPort1.setSerialPortParams(BAUD_RATE, DATA_BITS, STOP_BITS, PARITY);
serialPort2.setSerialPortParams(BAUD_RATE, DATA_BITS, STOP_BITS, PARITY);
Thread thread1 = new SerialPortThread(serialPort1);
Thread thread2 = new SerialPortThread(serialPort2);
thread1.start();
thread2.start();
} catch (PortInUseException | UnsupportedCommOperationException | NoSuchPortException e) {
e.printStackTrace();
}
}
private static class SerialPortThread extends Thread {
private final SerialPort serialPort;
private final InputStream inputStream;
private final OutputStream outputStream;
SerialPortThread(SerialPort serialPort) throws IOException {
this.serialPort = serialPort;
this.inputStream = serialPort.getInputStream();
this.outputStream = serialPort.getOutputStream();
}
@Override
public void run() {
while (true) {
try {
// 读取串口数据
int data = inputStream.read();
System.out.println("Received data: " + data);
// 写入串口数据
outputStream.write(data);
outputStream.flush();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
```
以上代码中,为每个串口设备创建了一个SerialPortThread线程,每个线程都可以独立进行读写操作。在主线程中,启动了这两个线程,实现了同时控制多个串口设备的功能。注意,以上代码只是示例,具体实现可能会因不同的串口设备、操作系统等因素而有所不同。