Java控制台怎么设置串口通信

87次阅读

共计 2058 个字符，预计需要花费 6 分钟才能阅读完成。

在 Java 中，可以使用 RXTXcomm 库来实现串口通信。下面是一个简单的示例：

首先，你需要下载和安装 RXTXcomm 库。你可以在 https://github.com/rxtx/rxtx 找到最新版本的库。
导入 RXTXcomm 库到你的 Java 项目中。
创建一个新的 Java 类并导入所需的类和包：

import gnu.io.CommPort;
import gnu.io.CommPortIdentifier;
import gnu.io.SerialPort;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

在类中定义串口通信的方法：

public class SerialCommunication {private InputStream inputStream;
    private OutputStream outputStream;

    public void connect(String portName) throws Exception {CommPortIdentifier portIdentifier = CommPortIdentifier.getPortIdentifier(portName);
        if (portIdentifier.isCurrentlyOwned()) {System.out.println("Error: Port is currently in use");
        } else {CommPort commPort = portIdentifier.open(this.getClass().getName(), 2000);

            if (commPort instanceof SerialPort) {SerialPort serialPort = (SerialPort) commPort;
                serialPort.setSerialPortParams(9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);

                inputStream = serialPort.getInputStream();
                outputStream = serialPort.getOutputStream();

                (new Thread(new SerialReader(inputStream))).start();
                (new Thread(new SerialWriter(outputStream))).start();} else {System.out.println("Error: Only serial ports are handled by this example.");
            }
        }
    }

    public static class SerialReader implements Runnable {private InputStream inputStream;

        public SerialReader(InputStream inputStream) {this.inputStream = inputStream;
        }

        public void run() {byte[] buffer = new byte[1024];
            int len = -1;
            try {while ((len = this.inputStream.read(buffer)) > -1) {System.out.print(new String(buffer, 0, len));
                }
            } catch (IOException e) {e.printStackTrace();
            }
        }
    }

    public static class SerialWriter implements Runnable {private OutputStream outputStream;

        public SerialWriter(OutputStream outputStream) {this.outputStream = outputStream;
        }

        public void run() {try {int c = 0;
                while ((c = System.in.read()) > -1) {this.outputStream.write(c);
                }
            } catch (IOException e) {e.printStackTrace();
            }
        }
    }

    public static void main(String[] args) {try {SerialCommunication serial = new SerialCommunication();
            serial.connect("/dev/ttyUSB0"); // Replace with your serial port name
        } catch (Exception e) {e.printStackTrace();
        }
    }
}