Re: CommPort integration

From:

Knute Johnson <nospam@rabbitbrush.frazmtn.com>

Newsgroups:

comp.lang.java.programmer

Date:

Sat, 11 Nov 2006 09:50:49 -0800

Message-ID:

<Z3o5h.217904$Ry4.111877@newsfe10.phx>

AndreasW wrote:

Hello,

i've got a question about the integration of a CommPort into a Java
programm. I need it for data transfer between the PC and a
Microcontroller. I'm a newbie in programming and so it would be very
useful to have some easy examples or an introduction for the
initialisation of the port and the read/transmit- process. I've
downloaded "commapi" from Sun Microsystems, but I mean the description
is a little bit complicated.
I hope you could help me with a useful link or a helpful example file.

Thank you very much.
AW

I don't know if it is important, but I use the JBuilder from Borland.

Here is some code taken from an application I wrote. It opens the port,
sets the parameters and obtains an InputStream. After that it is just
like any other stream I/O.

                     CommPortIdentifier cpi =
                      CommPortIdentifier.getPortIdentifier("COM1");
                     SerialPort sp =
                      (SerialPort)cpi.open("LVDCClient",2500);

                     // set serial port parameters
                     sp.setSerialPortParams(9600,SerialPort.DATABITS_8,
                      SerialPort.STOPBITS_1,SerialPort.PARITY_NONE);
                     sp.setFlowControlMode(SerialPort.FLOWCONTROL_NONE);

                     sp.disableReceiveTimeout();
                     sp.disableReceiveThreshold();

                     InputStream is = sp.getInputStream();
                     bis = new BufferedInputStream(is);

--

Knute Johnson
email s/nospam/knute/