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java能否控制串口通讯？若能，如何实现？（急！30分）
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本文导语: java能否控制串口通讯？若能，如何实现？（急！30分） | /* * * IMU.java 1.0 * Main Program for Serial Communication * * Created: March 27, 2001 * * Author : Qingye Jiang (John) * American GNC Corpor...
java能否控制串口通讯？若能，如何实现？（急！30分）
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/*
*
* IMU.java 1.0
* Main Program for Serial Communication
*
* Created: March 27, 2001
*
* Author : Qingye Jiang (John)
* American GNC Corporation
* 888 Easy St, Simi Valley CA 93065-1812
*
* Contact: (805) 582-0582 (Tel), (805) 582-0098 (Fax)
* qjiang@tsinghua.edu
*
*/
import java.io.*;
import java.util.*;
import javax.comm.*;
class IMU
{
static CommPortIdentifier portId;
static SerialPort serialPort;
static OutputStream out;
static InputStream in;
public static void main(String[] args)
{
try
{
//Declare the serial port, and open it.
portId = CommPortIdentifier.getPortIdentifier("COM1");
try
{
serialPort = (SerialPort) portId.open("IMU_App", 2000);
} catch (PortInUseException e)
{
System.out.println(e.getMessage());
}
//Use InputStream in to read from the serial port, and OutputStream
//out to write to the serial port.
try
{
in = serialPort.getInputStream();
out = serialPort.getOutputStream();
} catch (IOException e)
{
System.out.println(e.getMessage());
}
//Initialize the communication parameters to 9600, 8, 1, none.
try
{
serialPort.setSerialPortParams(9600,
SerialPort.DATABITS_8,
SerialPort.STOPBITS_1,
SerialPort.PARITY_NONE);
} catch (UnsupportedCommOperationException e)
{
System.out.println(e.getMessage());
}
} catch (NoSuchPortException e)
{
System.out.println(e.getMessage());
}
//Declare the serial buffer area, a thread to read from the seriial port,
//a thread to read from the serial buffer for processing, and a thread
//to write to the serial port.
SerialBuffer SB = new SerialBuffer();
ReadSerial r1 = new ReadSerial(SB, in);
ReadBuffer r2 = new ReadBuffer(SB);
WriteSerial r3 = new WriteSerial(out);
//Start all three threads.
r1.start();
r2.start();
r3.start();
}
}
/*
*
* SerialBuffer.java 1.0
* Class that implements the serial buffer
*
* Created: March 27, 2001
*
* Author : Qingye Jiang (John)
* American GNC Corporation
* 888 Easy St, Simi Valley CA 93065-1812
*
* Contact: (805) 582-0582 (Tel), (805) 582-0098 (Fax)
* qjiang@tsinghua.edu
*
*/
public class SerialBuffer
{
private String Content = "";
private String CurrentMsg, TempContent;
private boolean available = false;
//read a message from the serial buffer. The star character '*' is used
//as the seperation mark between different messages.
public synchronized String GetMsg()
{
int SepMark;
if ((SepMark = Content.indexOf('*')) == -1)
{
available = false;
while (available == false)
{
try
{
wait();
} catch (InterruptedException e) { }
}
SepMark = Content.indexOf('*');
}
CurrentMsg = Content.substring(0, SepMark);
TempContent = Content.substring(SepMark+1);
Content = TempContent;
notifyAll();
return CurrentMsg;
}
//Put a character to the serial buffer
public synchronized void PutChar(int c)
{
Character d = new Character((char) c);
Content = Content.concat(d.toString());
if (c == '*')
{
available = true;
}
notifyAll();
}
}
*
* IMU.java 1.0
* Main Program for Serial Communication
*
* Created: March 27, 2001
*
* Author : Qingye Jiang (John)
* American GNC Corporation
* 888 Easy St, Simi Valley CA 93065-1812
*
* Contact: (805) 582-0582 (Tel), (805) 582-0098 (Fax)
* qjiang@tsinghua.edu
*
*/
import java.io.*;
import java.util.*;
import javax.comm.*;
class IMU
{
static CommPortIdentifier portId;
static SerialPort serialPort;
static OutputStream out;
static InputStream in;
public static void main(String[] args)
{
try
{
//Declare the serial port, and open it.
portId = CommPortIdentifier.getPortIdentifier("COM1");
try
{
serialPort = (SerialPort) portId.open("IMU_App", 2000);
} catch (PortInUseException e)
{
System.out.println(e.getMessage());
}
//Use InputStream in to read from the serial port, and OutputStream
//out to write to the serial port.
try
{
in = serialPort.getInputStream();
out = serialPort.getOutputStream();
} catch (IOException e)
{
System.out.println(e.getMessage());
}
//Initialize the communication parameters to 9600, 8, 1, none.
try
{
serialPort.setSerialPortParams(9600,
SerialPort.DATABITS_8,
SerialPort.STOPBITS_1,
SerialPort.PARITY_NONE);
} catch (UnsupportedCommOperationException e)
{
System.out.println(e.getMessage());
}
} catch (NoSuchPortException e)
{
System.out.println(e.getMessage());
}
//Declare the serial buffer area, a thread to read from the seriial port,
//a thread to read from the serial buffer for processing, and a thread
//to write to the serial port.
SerialBuffer SB = new SerialBuffer();
ReadSerial r1 = new ReadSerial(SB, in);
ReadBuffer r2 = new ReadBuffer(SB);
WriteSerial r3 = new WriteSerial(out);
//Start all three threads.
r1.start();
r2.start();
r3.start();
}
}
/*
*
* SerialBuffer.java 1.0
* Class that implements the serial buffer
*
* Created: March 27, 2001
*
* Author : Qingye Jiang (John)
* American GNC Corporation
* 888 Easy St, Simi Valley CA 93065-1812
*
* Contact: (805) 582-0582 (Tel), (805) 582-0098 (Fax)
* qjiang@tsinghua.edu
*
*/
public class SerialBuffer
{
private String Content = "";
private String CurrentMsg, TempContent;
private boolean available = false;
//read a message from the serial buffer. The star character '*' is used
//as the seperation mark between different messages.
public synchronized String GetMsg()
{
int SepMark;
if ((SepMark = Content.indexOf('*')) == -1)
{
available = false;
while (available == false)
{
try
{
wait();
} catch (InterruptedException e) { }
}
SepMark = Content.indexOf('*');
}
CurrentMsg = Content.substring(0, SepMark);
TempContent = Content.substring(SepMark+1);
Content = TempContent;
notifyAll();
return CurrentMsg;
}
//Put a character to the serial buffer
public synchronized void PutChar(int c)
{
Character d = new Character((char) c);
Content = Content.concat(d.toString());
if (c == '*')
{
available = true;
}
notifyAll();
}
}
|
/*
*
* IMU.java 1.0
* Main Program for Serial Communication
*
* Created: March 27, 2001
*
* Author : Qingye Jiang (John)
* American GNC Corporation
* 888 Easy St, Simi Valley CA 93065-1812
*
* Contact: (805) 582-0582 (Tel), (805) 582-0098 (Fax)
* qjiang@tsinghua.edu
*
*/
import java.io.*;
import java.util.*;
import javax.comm.*;
class IMU
{
static CommPortIdentifier portId;
static SerialPort serialPort;
static OutputStream out;
static InputStream in;
public static void main(String[] args)
{
try
{
//Declare the serial port, and open it.
portId = CommPortIdentifier.getPortIdentifier("COM1");
try
{
serialPort = (SerialPort) portId.open("IMU_App", 2000);
} catch (PortInUseException e)
{
System.out.println(e.getMessage());
}
//Use InputStream in to read from the serial port, and OutputStream
//out to write to the serial port.
try
{
in = serialPort.getInputStream();
out = serialPort.getOutputStream();
} catch (IOException e)
{
System.out.println(e.getMessage());
}
//Initialize the communication parameters to 9600, 8, 1, none.
try
{
serialPort.setSerialPortParams(9600,
SerialPort.DATABITS_8,
SerialPort.STOPBITS_1,
SerialPort.PARITY_NONE);
} catch (UnsupportedCommOperationException e)
{
System.out.println(e.getMessage());
}
} catch (NoSuchPortException e)
{
System.out.println(e.getMessage());
}
//Declare the serial buffer area, a thread to read from the seriial port,
//a thread to read from the serial buffer for processing, and a thread
//to write to the serial port.
SerialBuffer SB = new SerialBuffer();
ReadSerial r1 = new ReadSerial(SB, in);
ReadBuffer r2 = new ReadBuffer(SB);
WriteSerial r3 = new WriteSerial(out);
//Start all three threads.
r1.start();
r2.start();
r3.start();
}
}
*
* IMU.java 1.0
* Main Program for Serial Communication
*
* Created: March 27, 2001
*
* Author : Qingye Jiang (John)
* American GNC Corporation
* 888 Easy St, Simi Valley CA 93065-1812
*
* Contact: (805) 582-0582 (Tel), (805) 582-0098 (Fax)
* qjiang@tsinghua.edu
*
*/
import java.io.*;
import java.util.*;
import javax.comm.*;
class IMU
{
static CommPortIdentifier portId;
static SerialPort serialPort;
static OutputStream out;
static InputStream in;
public static void main(String[] args)
{
try
{
//Declare the serial port, and open it.
portId = CommPortIdentifier.getPortIdentifier("COM1");
try
{
serialPort = (SerialPort) portId.open("IMU_App", 2000);
} catch (PortInUseException e)
{
System.out.println(e.getMessage());
}
//Use InputStream in to read from the serial port, and OutputStream
//out to write to the serial port.
try
{
in = serialPort.getInputStream();
out = serialPort.getOutputStream();
} catch (IOException e)
{
System.out.println(e.getMessage());
}
//Initialize the communication parameters to 9600, 8, 1, none.
try
{
serialPort.setSerialPortParams(9600,
SerialPort.DATABITS_8,
SerialPort.STOPBITS_1,
SerialPort.PARITY_NONE);
} catch (UnsupportedCommOperationException e)
{
System.out.println(e.getMessage());
}
} catch (NoSuchPortException e)
{
System.out.println(e.getMessage());
}
//Declare the serial buffer area, a thread to read from the seriial port,
//a thread to read from the serial buffer for processing, and a thread
//to write to the serial port.
SerialBuffer SB = new SerialBuffer();
ReadSerial r1 = new ReadSerial(SB, in);
ReadBuffer r2 = new ReadBuffer(SB);
WriteSerial r3 = new WriteSerial(out);
//Start all three threads.
r1.start();
r2.start();
r3.start();
}
}
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import javax.comm.*;
看看：
http://www-900.ibm.com/developerWorks/java/joy-comm/index.shtml
看看：
http://www-900.ibm.com/developerWorks/java/joy-comm/index.shtml
|
http://www.linuxaid.com.cn/support/showfom.jsp?i=2237
|
它山之玉---
转自BBS水木清华站Java讨论区
利用Java实现串口全双工通讯
qyjohn , 3月30日,2001年
关键字: Java Comm API,串口,全双工通讯
摘要:
本文介绍一个利用Java Comm API (javax.comm)实现串口全双工通讯的简单程序
本文介绍一个利用Java Comm API (javax.comm)实现串口全双工通讯的简单程序。这个程序首先打开并初始化一个串口，然后启动如下三个进程：ReadSerial进程从该串口读取数据并放入缓冲区，ReadBuffer进程从缓冲区读取数据并打印到屏幕， WriteSerial进程每5秒钟向该串口发送一个星号(*)。
在这个示例程序中使用了一个简单的协议，既不同的消息之间用星号'*'作为分隔。缓冲区程序根据是否收到星号作为存在等待处理的消息的判断依据。
Java Comm API不是标准的Java API，因此的标准的运行环境中并不提供这个包。如果你的系统上还没有安装这个包，你可以从SUN公司的网站下载。在这个包里面有一个安装指南，如果你没有正确安装这个包，可能你不能够正确运行这个例程。
这个简单的例程包括以下文件：
IMU.java (主程序)
ReadBuffer.java (从缓冲区读取一个消息)
ReadSerial.java (读取串口数据并放入缓冲区)
SerialBuffer.java (缓冲区)
WriteSerial.java (每5秒钟往串口送一个星号'*')
测试程序：
SendCom.java (将一个数据文件往串口发送)
SEND.TXT (供测试用的数据文件)
测试方法：
1 正确安装Java Comm API后编译本例程
2 将计算机的COM1和COM2用一条串口线连接起来
3 运行IMU。如果你这时候打开Windows自带的超级终端并连接到COM2的话，你应该能够看见有星号出现在超级终端的屏幕上。超级终端的参数设置为9600, N, 8, 1, none。
4 关闭超级终端，运行SendCom。这时候你应该能够从IMU的屏幕上看到数据文件里面的内容。
转自BBS水木清华站Java讨论区
利用Java实现串口全双工通讯
qyjohn , 3月30日,2001年
关键字: Java Comm API,串口,全双工通讯
摘要:
本文介绍一个利用Java Comm API (javax.comm)实现串口全双工通讯的简单程序
本文介绍一个利用Java Comm API (javax.comm)实现串口全双工通讯的简单程序。这个程序首先打开并初始化一个串口，然后启动如下三个进程：ReadSerial进程从该串口读取数据并放入缓冲区，ReadBuffer进程从缓冲区读取数据并打印到屏幕， WriteSerial进程每5秒钟向该串口发送一个星号(*)。
在这个示例程序中使用了一个简单的协议，既不同的消息之间用星号'*'作为分隔。缓冲区程序根据是否收到星号作为存在等待处理的消息的判断依据。
Java Comm API不是标准的Java API，因此的标准的运行环境中并不提供这个包。如果你的系统上还没有安装这个包，你可以从SUN公司的网站下载。在这个包里面有一个安装指南，如果你没有正确安装这个包，可能你不能够正确运行这个例程。
这个简单的例程包括以下文件：
IMU.java (主程序)
ReadBuffer.java (从缓冲区读取一个消息)
ReadSerial.java (读取串口数据并放入缓冲区)
SerialBuffer.java (缓冲区)
WriteSerial.java (每5秒钟往串口送一个星号'*')
测试程序：
SendCom.java (将一个数据文件往串口发送)
SEND.TXT (供测试用的数据文件)
测试方法：
1 正确安装Java Comm API后编译本例程
2 将计算机的COM1和COM2用一条串口线连接起来
3 运行IMU。如果你这时候打开Windows自带的超级终端并连接到COM2的话，你应该能够看见有星号出现在超级终端的屏幕上。超级终端的参数设置为9600, N, 8, 1, none。
4 关闭超级终端，运行SendCom。这时候你应该能够从IMU的屏幕上看到数据文件里面的内容。
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本站(WWW.)站内文章除注明原创外，均为转载、整理或搜集自网络。欢迎任何形式的转载，转载请注明出处。