api文档

http://fazecast.github.io/jSerialComm/javadoc/com/fazecast/jSerialComm/package-summary.html

 maven依赖

1<!-- https://mvnrepository.com/artifact/com.fazecast/jSerialComm -->
2<dependency>
3    <groupId>com.fazecast</groupId> <artifactId>jSerialComm</artifactId> <!--<version>2.5.2</version>--> <version>[2.0.0,3.0.0)</version> </dependency>  

基于事件的阅读用法示例

可供读取的数据示例

以下示例显示了使用此事件触发器的一种方法：

1    SerialPort comPort = SerialPort.getCommPorts()[0];
2    comPort.openPort();
3    comPort.addDataListener(new SerialPortDataListener() {
4        @Override
5        public int getListeningEvents() { return SerialPort.LISTENING_EVENT_DATA_AVAILABLE; }
6        @Override
7        public void serialEvent(SerialPortEvent event)
8        {
9            if (event.getEventType() != SerialPort.LISTENING_EVENT_DATA_AVAILABLE)
10                return;
11            byte[] newData = new byte[comPort.bytesAvailable()];
12            int numRead = comPort.readBytes(newData, newData.length);
13            System.out.println("Read " + numRead + " bytes.");
14        }
15
16    });

 非阻塞阅读用法示例

1package com.bhu.utils;
2
3import com.fazecast.jSerialComm.SerialPort;
4
5
6public class SerialComm {
7
8    /*public static void main(String[] args) throws InterruptedException {
9        SerialComm serialComm = new SerialComm("COM3");
10        serialComm.openPort();
11        while (true) {
12            byte[] bs = serialComm.writeAndRead("010300000002");
13            Double[] d = Utils.analysisData(bs, 3, 5, 2);
14            if (d != null) {
15                for (Double a : d) {
16                    System.out.println(a);
17                }
18            }
19
20            Thread.sleep(1000);
21        }
22    }*/
23
24
25    public SerialComm(String portDescriptor) {
26        this.portDescriptor = portDescriptor;
27    }
28
29    public SerialComm(String portDescriptor, Integer baudRate) {
30        this.portDescriptor = portDescriptor;
31        this.baudRate = baudRate;
32    }
33
34    private String portDescriptor;
35    private Integer baudRate;
36
37    private SerialPort comPort;
38
39    public boolean isOpen() {
40        return comPort.isOpen();
41    }
42
43    /**
44     * 打开串口
45     *
46     * @return 打开的状态
47     */
48    public boolean openPort() {
49        return openPort(portDescriptor, baudRate);
50    }
51
52    /**
53     * 打开串口
54     *
55     * @param portDescriptor COM口
56     * @return 打开的状态
57     */
58    public boolean openPort(String portDescriptor) {
59        return openPort(portDescriptor, null);
60    }
61
62    /**
63     * 打开串口
64     *
65     * @param portDescriptor COM口
66     * @param baudRate       波特率
67     * @return 打开的状态
68     */
69    public boolean openPort(String portDescriptor, Integer baudRate) {
70        comPort = SerialPort.getCommPort(portDescriptor);
71        if (baudRate != null) {
72            comPort.setBaudRate(baudRate);
73        }
74        if (!comPort.isOpen()) {
75            return comPort.openPort();
76        } else {
77            return true;
78        }
79    }
80
81
82    /**
83     * 关闭串口
84     *
85     * @return
86     */
87    public boolean closePort() {
88        if (comPort != null && comPort.isOpen()) {
89            return comPort.closePort();
90        }
91        return true;
92    }
93
94    /**
95     * 向com口发送数据并且读取数据
96     */
97    public byte[] writeAndRead(String instruct) {
98        byte[] reslutData = null;
99        try {
100            if (!comPort.isOpen()) throw new BhudyException(BhudyExceptionCode.CODE_18);
101
102            int numWrite = comPort.writeBytes(Utils.getCRC(instruct), Utils.getCRC(instruct).length);
103            if (numWrite > 0) {
104                int i = 0;
105                while (comPort.bytesAvailable() > 0 && i++ < 5) Thread.sleep(20);
106                byte[] readBuffer = new byte[comPort.bytesAvailable()]; int numRead = comPort.readBytes(readBuffer, readBuffer.length); if (numRead > 0) { reslutData = readBuffer; } } } catch (InterruptedException e) { throw new BhudyException(e.getMessage()); } return reslutData; } }