Debian 8 x86_64 Java 使用 NRSerialPort 开发串口通信

来源：互联网发布：linux route 修改编辑：程序博客网时间：2024/06/13 22:29

使用方法: https://github.com/NeuronRobotics/nrjavaserial
下载: https://oss.sonatype.org/#nexus-search;gav~com.neuronrobotics~nrjavaserial~~~

测试代码

import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.IOException;import java.util.TooManyListenersException;import gnu.io.NRSerialPort;import gnu.io.SerialPortEvent;import gnu.io.SerialPortEventListener;public class NRJavaSerialDemo {    void connect(String port) {        for (String s : NRSerialPort.getAvailableSerialPorts()) {            System.out.println("Availible port: " + s);        }        int baudRate = 115200;        NRSerialPort serialPort = new NRSerialPort(port, baudRate);        serialPort.connect();        DataInputStream inStream = new DataInputStream(serialPort.getInputStream());        DataOutputStream outStream = new DataOutputStream(serialPort.getOutputStream());        new Thread(new SerialWriter(outStream)).start();        try {            serialPort.addEventListener(new SerialReader(inStream));            serialPort.notifyOnDataAvailable(true);        } catch (TooManyListenersException e1) {            e1.printStackTrace();        }        try {            String testData = "ATD139xxxxxxxx;\n";            outStream.write(testData.getBytes());        } catch (IOException e) {            e.printStackTrace();        }    }    public static class SerialReader implements SerialPortEventListener {        private DataInputStream inStream;        private byte[] buffer = new byte[1024];        public SerialReader(DataInputStream inStream) {            this.inStream = inStream;        }        public void serialEvent(SerialPortEvent arg0) {            int data;            int len = 0;            try {                while ((data = inStream.read()) > -1)                    buffer[len++] = (byte) data;                System.out.println(new String(buffer, 0, len));            } catch (IOException e) {                e.printStackTrace();            } catch (Exception e) {                e.printStackTrace();            }        }    }    public static class SerialWriter implements Runnable {        private DataOutputStream outStream;        public SerialWriter(DataOutputStream outStream) {            this.outStream = outStream;        }        public void run() {            int c = 0;            try {                while ((c = System.in.read()) > -1)                    this.outStream.write(c);            } catch (IOException e) {                e.printStackTrace();            }        }    }    public static void main(String[] args) {        try {            new NRJavaSerialDemo().connect("/dev/ttyUSB0");        } catch (Exception e) {            e.printStackTrace();        }    }}

说明
使用 DataInputstream 不要使用 InputStream， InputStream 会接收不到数据
测试代码除使用 NRSerialPort类代替 RXTX 的 SerialPort类，其他部分和 RXTX 案例一样
NRSerialPort 不需要 RXTX 的两个 so文件, 可以直接使用
RXTX 案例: http://rxtx.qbang.org/wiki/index.php/Examples

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