OS:win64位操作系统
rxtx:64位
下载地址:http://download.youkuaiyun.com/detail/h_hongchang/8428621
windows平台:
1、把rxtxParallel.dll、rxtxSerial.dll拷贝到:C:\WINDOWS\system32下。
2、如果是在开发的时候(JDK),需要把RXTXcomm.jar、rxtxParallel.dll、rxtxSerial.dll拷贝到..\jre...\lib\ext下;如:D:\Program Files\Java\jre1.6.0_02\lib\ext
3、而且需要把项目1.右键->2.Preperties(首选项)->3.Java Build Path->4.Libraries->5.展开RXTXcomm.jar->6.Native library location:(None)->7.浏览External Folder(选择至该项目的lib文件夹,如:E:/Item/MyItem/WebRoot/WEB-INF/lib).
以下是java代码:
- package com.rxtx.test;
- import gnu.io.CommPortIdentifier;
- import gnu.io.PortInUseException;
- import gnu.io.SerialPort;
- import gnu.io.SerialPortEvent;
- import gnu.io.SerialPortEventListener;
- import gnu.io.UnsupportedCommOperationException;
- import java.io.BufferedInputStream;
- import java.io.BufferedOutputStream;
- import java.io.BufferedReader;
- import java.io.BufferedWriter;
- import java.io.IOException;
- import java.io.InputStream;
- import java.io.InputStreamReader;
- import java.io.OutputStream;
- import java.io.OutputStreamWriter;
- import java.util.Enumeration;
- import java.util.TooManyListenersException;
- /**
- * @项目名称 :串口监听
- * @文件名称 :
- * @所在包 :
- * @功能描述 :
- * 串口类
- * @创建者 :hhc
- * @创建日期 :2015.02.06
- * @修改记录 :
- */
- public class SerialPortListener implements Runnable, SerialPortEventListener {
- private String appName = "串口通讯";
- private int timeout = 2000;//open 端口时的等待时间
- private int threadTime = 0;
- private CommPortIdentifier commPort;
- private SerialPort serialPort;
- private InputStream inputStream;
- private OutputStream outputStream;
- /**
- * @方法名称 :listPort
- * @功能描述 :列出所有可用的串口
- * @返回值类型 :void
- */
- @SuppressWarnings("rawtypes")
- public void listPort(){
- CommPortIdentifier cpid;//当前串口对象
- Enumeration en = CommPortIdentifier.getPortIdentifiers();
- System.out.print("列出所有端口:");
- while(en.hasMoreElements()){
- cpid = (CommPortIdentifier)en.nextElement();
- //检测端口类型是否为串口
- if(cpid.getPortType() == CommPortIdentifier.PORT_SERIAL){
- System.out.println(cpid.getName() + ", " + cpid.getCurrentOwner());
- }
- }
- }
- /**
- * @方法名称 :openPort
- * @功能描述 :选择一个端口,比如:COM1 并实例 SerialPort
- * @返回值类型 :void
- * @param portName
- */
- private void openPort(String portName){
- /* 打开该指定串口 */
- this.commPort = null;
- CommPortIdentifier cpid;
- Enumeration en = CommPortIdentifier.getPortIdentifiers();
- while(en.hasMoreElements()){
- cpid = (CommPortIdentifier)en.nextElement();
- if(cpid.getPortType() == CommPortIdentifier.PORT_SERIAL && cpid.getName().equals(portName)){
- this.commPort = cpid;
- break;
- }
- }
- /* 实例 SerialPort*/
- if(commPort == null)
- log(String.format("无法找到名字为'%1$s'的串口!", portName));
- else{
- log("当前端口:"+commPort.getName());
- try{
- //应用程序名【随意命名】,等待的毫秒数
- serialPort = (SerialPort)commPort.open(appName, timeout);
- }catch(PortInUseException e){
- // 端口已经被占用
- throw new RuntimeException(String.format("端口'%1$s'正在使用中!",commPort.getName()));
- }
- }
- }
- /**
- * @方法名称 :checkPort
- * @功能描述 :检查端口是否正确连接
- * @返回值类型 :void
- */
- private void checkPort(){
- if(commPort == null)
- throw new RuntimeException("没有选择端口,请使用 " +"selectPort(String portName) 方法选择端口");
- if(serialPort == null){
- throw new RuntimeException("SerialPort 对象无效!");
- }
- }
- /**
- * @方法名称 :write
- * @功能描述 :向端口发送数据,请在调用此方法前 先选择端口,并确定SerialPort正常打开!
- * @返回值类型 :void
- * @param message
- * @throws IOException
- */
- public void write(String message) throws InterruptedException {
- checkPort();
- try{
- outputStream = new BufferedOutputStream(serialPort.getOutputStream());
- outputStream.write(message.getBytes());
- log("消息:'"+message+"'发送成功!");
- outputStream.close();
- }catch(IOException e){
- throw new RuntimeException("向端口发送信息时出错:"+e.getMessage());
- }
- /*另一种
- try {
- // 进行输入输出操作
- OutputStreamWriter writer = new OutputStreamWriter(serialPort.getOutputStream());
- BufferedWriter bw = new BufferedWriter(writer);
- bw.write(message);
- bw.flush();
- bw.close();
- writer.close();
- System.out.println("消息:'"+message+"'发送成功!");
- } catch (IOException e) {
- throw new RuntimeException("向端口发送信息时出错:"+e.getMessage());
- }*/
- }
- /**
- * @方法名称 :startRead
- * @功能描述 :开始监听从端口中接收的数据
- * @返回值类型 :void
- * @param time 监听程序时间,单位为秒,0 则是一直监听
- */
- public void startRead(int time){
- checkPort();
- try{
- inputStream = new BufferedInputStream(serialPort.getInputStream());
- }catch(IOException e){
- throw new RuntimeException("获取端口的InputStream出错:"+e.getMessage());
- }
- try{
- serialPort.addEventListener(this);
- // 设置可监听
- serialPort.notifyOnDataAvailable(true);
- log(String.format("开始监听来自'%1$s'的数据--------------", commPort.getName()));
- serialPort.setSerialPortParams(9600,SerialPort.DATABITS_8,SerialPort.STOPBITS_1,SerialPort.PARITY_NONE);
- }catch(TooManyListenersException e){
- //端口监听者过多;
- throw new RuntimeException(e.getMessage());
- } catch (UnsupportedCommOperationException e) {
- //"端口操作命令不支持";
- e.printStackTrace();
- }
- /* 关闭监听 */
- if(time > 0){
- this.threadTime = time*1000;
- Thread t = new Thread(this);
- t.start();
- log(String.format("监听程序将在%1$d秒后关闭。。。。", time));
- }
- }
- /**
- * @方法名称 :close
- * @功能描述 :关闭 SerialPort
- * @返回值类型 :void
- */
- public void close(){
- serialPort.close();
- serialPort = null;
- commPort = null;
- }
- public void log(String msg){
- System.out.println(appName+" --> "+msg);
- }
- /**
- * 数据接收的监听处理函数
- */
- @Override
- public void serialEvent(SerialPortEvent arg0){
- switch(arg0.getEventType()){
- case SerialPortEvent.BI:/*Break interrupt,通讯中断*/
- case SerialPortEvent.OE:/*Overrun error,溢位错误*/
- case SerialPortEvent.FE:/*Framing error,传帧错误*/
- case SerialPortEvent.PE:/*Parity error,校验错误*/
- case SerialPortEvent.CD:/*Carrier detect,载波检测*/
- case SerialPortEvent.CTS:/*Clear to send,清除发送*/
- case SerialPortEvent.DSR:/*Data set ready,数据设备就绪*/
- case SerialPortEvent.RI:/*Ring indicator,响铃指示*/
- case SerialPortEvent.OUTPUT_BUFFER_EMPTY:/*Output buffer is empty,输出缓冲区清空*/
- break;
- case SerialPortEvent.DATA_AVAILABLE:/*Data available at the serial port,端口有可用数据。读到缓冲数组,输出到终端*/
- byte[] readBuffer = new byte[1024];
- String readStr="";
- String s2 = "";
- try {
- while (inputStream.available() > 0) {
- inputStream.read(readBuffer);
- readStr += new String(readBuffer).trim();
- }
- log("接收到端口返回数据(长度为"+readStr.length()+"):"+readStr);
- } catch (IOException e) {
- throw new RuntimeException(e.getMessage());
- }
- /* 另一种// 进行输入输出操作
- BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
- String line = null;
- try {
- while ((line = reader.readLine()) != null) {
- System.out.println(line);
- }
- reader.close();
- } catch (IOException e) {
- //e.printStackTrace();
- }*/
- }
- }
- @Override
- public void run() {
- try{
- Thread.sleep(threadTime);
- serialPort.close();
- log(String.format("端口'%1$s'监听关闭了!", commPort.getName()));
- }catch(Exception e){
- e.printStackTrace();
- }
- }
- /**
- * 测试
- * */
- public static void main(String[] args) throws InterruptedException {
- SerialPortListener sp = new SerialPortListener();
- /* 列出所有*/
- sp.listPort();
- /* 开打相应端口*/
- sp.openPort("COM4");
- /* 设置为一直监听*/
- sp.startRead(0);
- /* 首次连接后需暂停2秒再继续执行否则数据会有问题*/
- Thread.sleep(2000);
- sp.write("我");
- /* 之后发送信息前后间隔至少40ms,否则会将上条返返回信息合并为一条接收(视硬件情况调节)*/
- Thread.sleep(40);
- sp.write("你");
- Thread.sleep(5000);
- sp.write("我们");
- }
- }
以下是 arduino 代码:
- <span style="font-size:14px;">String comdata ="";//接收的字符串
- void setup() {
- Serial.begin(9600);//串口波特率
- }
- void loop() {
- if(Serial.available() > 0){
- /* 接收字符串 */
- while (Serial.available() > 0)
- {
- comdata += char(Serial.read());
- delay(2);
- }
- if (comdata.length() > 0){
- if(comdata=="我"){
- Serial.println("我什么我");
- }
- if(comdata=="你"){
- Serial.println("你什么你");
- }
- if(comdata=="我们"){
- Serial.println("我们什么我们");
- }
- comdata = "";
- }
- }
- }</span>