CRC with comm api?

Hi,
What I need to do plain and simple is send a CRC encoded msg over the serial port, and idealy be able to show what information is coming in the serial port.
I have been using the serialDemo project that comes with the comm api, because it's pretty simple. However I have a very noisey channel and I need to implement a CRC algorithm for data integrity.. but I don't know how to add this feature to the serialDemo program.
I've been looking at the code but it seems all the control for things like parity etc are right in the comm api, so how can I modify it to use CRC as well?
I'm not new to java but I am new to serial communication.
Please help

The algorithm you are looking for is probably crc16. This is based on a polynomial that uses the data bytes after the parity has been applied.
I found this GNU license on the web.
http://www.jonelo.de/java/jacksum/
Or you can write your own based on this
http://www.summitinstruments.com/library/tn410.htm

Similar Messages

Direct Serial Port Comunication With comm API 2.0

I am running the samples codes like SimpleRead under Windows XP.
When it executes "portList = CommPortIdentifier.getPortIdentifiers()", the enumerator portList keeps in Null. So no ports are detected.
I know that there are some dificults because Windows Xp, NT and 200 dont allow direct access to ports.
I dont know wich standar can i follow to solve this problem..
Thanks...
Andres

I followed your sugestions...
I installed the dll and the properties file in the respective directories.But I still having the problem.
I am testing on Jbuilder8 and installed the jdk 1.4 under this directory.
In the project i put the path for the lib and bin directories...
Maybe the problem is the large of the path ? c:\program files\jbuilder8\jdk1.4\lib\
The version are compatible ?
I think you speak spanish, but i think that we can talk in english only in that forum....
Thanks...

My last chance...for comm api with applet

Hi to u great valued developers,
Did anybody on earth the same as I do:
Create and deploy a signed applet including the java comm api lib.
The applet is deployed on an Apache Server and should run under IE6
Easy? sure but something is certainly missing in the cab 'cause altough no error is return in console, I either do not receive any info from the ports.
Same app compiled as application is ok.
Thanks very much for any help.
Cedric ([email protected])

Hello Enrique,
tx for ur answer.
As said, the application (reading serial ports) works fine.
The problem come possibly from javax.comm.property.
Should I package it with the cab?

Using Comm API with Web Start

I am trying to use Sun's Comm API with Web Start so I can access COM1 from my application.
When the application starts, I receive an exception for the CommPortIdentifier. When I run this
application as a standalone, it works fine. I have to assume that there is a problem with the
deployment of the Comm API.
I have include the win32com.dll in a jar file and defined it in the nativelib tag in the jnlp file.
The comm.jar and the javax.comm.properties files are include in another jar. I am not sure
what is the proper way to deploy these files and cannot find any documentation on this.
Does anyone know the correct way to handle this?

I have include the win32com.dll in a jar file and
defined it in the nativelib tag in the jnlp file.
The comm.jar and the javax.comm.properties files are
include in another jar. I am not sure
what is the proper way to deploy these files and
cannot find any documentation on this.
should like like this
<resources>
<j2se version="..." href="..."/>
<jar href="application.jar"/>
<jar href="comm.jar" />
</resources>
<resources os="Windows">
<nativelib href="win32com.dll"/>
</resources>
Then in the code in application.jar, call
System.loadLibrary("win32com");
/Dietz

Comm API with SCSI

Can the Javax Comm Api support SCSI??? There is any API that works with SCSI?

No, the comm API is for use with the serial ports etc. I don't think there is an API to work specifically with SCSI, unless you use JNI to call platform specific OS libraries.

Troubles with Java Comm API

I am trying to use the Java Comm API with Windows 2000 and I can enumerate the ports (I am almost sure that the problem is the dll). Do anybody knows a solution?

Where is the problem?

How to use the COMM API in a JAR file

I have developed an application, using the NetBeans IDE, to communicate with a modem over the COM1 serial port using the Java Comm API. The application works fine within the IDE, but when a JAR file is created and "double-clicked", the application launches correctly, but when the code is executed to "talk" over the COM1 serial port - nothing happens. No exceptions and no warnings are thrown. My environment is XP, SP1.
The manifest file is as follows:
Manifest-Version: 1.0
Class-Path: ../j2sdk1.4.2/jre/lib/ext/TimerBean.jar ../j2sdk1.4.2/jre/
lib/ext/AbsoluteLayout.jar ../j2sdk1.4.2/jre/lib/ext/comm.jar
Created-By: NetBeans IDE
Specified-By: Projects/TheApp/Files/TheApp.jarContent
Main-Class: Main
According to the Comm API installation instructions, the following files are copied:
copy comm.jar \j2sdk1.4.2\jre\lib\ext
copy wind32com.dll \j2sdk1.4.2\bin
copy javax.comm.properties \j2sdk1.4.2\jre\lib
I suspect it has something to do with the paths.
Any help would be greatly appreciated. Thanks.

Thanks for your input, but after trying what you suggested the problem still exists. I think your right to be suspicous of the javax.comm.properties file. The application, that worked in the IDE, exhibits the same behavoir as the JAR file if the javax.comm.properties file is removed from the ../jre/lib directory. In other words it compiles correctly in the IDE, but when executed, nothing happens when the code that "talks" to the serial port is run.
I've tried moving the javax.comm.properties file into the working directory. Also, the CLASSPATH and PATH system variables were modified to include the path to javax.comm.properties.
If you have anymore ideas, please let me know.
Thanks.

Including a DLL in JAR file (Comm API)

Writing a little app that interfaces with serial port device using the communications API and I'd like to bundle it into an executable JAR. JBuilder will create the JAR for me fine, but the issue is with the win32com.dll file thats part of the comms API. I need to include this, I don't think its possible to include as part of the executable, but otherwise the DLL needs to be in the windows\system folder. Could I include the dll as part of the JAR archive and then extract it upon runtime? If so how would I go about this?
Any help much appreciated.

There is another option. Native libraries need to reside within the java.library.path location. As it turns out, if you, at runtime, grab this property and ADD your own location to it, then set it back in to the System.setProperty() call, it will NOT work. The only way to do it is the -Djava.library.path value that tjmaven suggested.
However, if you read up on how a native library is found, it uses the ClassLoader.loadLibrary() which calls the protected findLibrary() method. You can therefore extend ClassLoader to find a path yourself.
One way is to extend URLClassLoader since it has the protection/security stuff AND the ability to look in .jar files for you. Your custom loader is created by a "launcher" class in your .jar file. First, your luancher uses getClass().getProtectionDomain().getCodeSource().getLocation() to get the absolute location of the .jar file its executing within. From there, you open the jar and look for your native library, extract it using the JAR api to a location of your choosing. Now, you instantiate the custom classloader and using this custom loader instance you load the rest of your classes. The main .jar file contains two classes, the launcher and the custom classloader, and contains the native library if you wish to do it this way. The custom classloader, you specify a URL[] of "classpath" entries. You bundle up the rest of your source in a second .jar file that you pass to the URL[] when creating the custom classloader. It will find all your classes in the 2nd jar no sweat. You can even "reload" these classes on the fly by recreating the custom classloader instance if you so wish to add a sort of "reload" feature.
Now, in your custom classloader, you override the findLibrary() and return the SAME STRING PATH that you used to unjar your native files to. This way, when the JVM asks your custom loader to load the library at some path, you return the right path to find the native files in.
I haven't verified that this works just yet, but I will soon. Primarily, my plugin engine over at www.platonos.org will support the ability to place native libraries in plugins, allowing you to effectively wrap a native library use as a plugin. Not yet working, but we'll soon have it in place.

Stand Alone OC4J and Java's Comm API

I am using the Java Comm API alongwith a servlet. The code simply gets the required ports and displays it in a JSP page. The program is developed using Jdeveloper 9. It works fine with embedded OC4J but a blank jsp page is displayed when deployed in in standalone OC4j instance on the same machine. I have correctly copied the required wincom32.dll, java.comm.properites and comm.jar to the jre/bin, jre/lib and jre/lib/ext respectively. What could be wrong.
Thanks
MMN

Try setting the OS PATH env variable to the directory where the .DLL is located before you launch the container. Or else put the .DLL in a directory which is in the existing path.
cheers
-steve-

Trying to use javax comm api in Windows Environment

I am working on developing a module to dial a phone number in a Windows environment. This is to test a voicemail connection so it isn't, necessarily, calling a modem.
A couple of questions:
1) I found the javax comm api but it appears Sun has only provided a Solaris and Linux version - where would I find a Windows version?
2) I was planning on dialing a modem with the voicemail phone number (programmatically, of course). I, then, want to recognize response and react to it - possibly stopping only with seeing that the phone number answered (since I don't want to write voice recognition software). Am I on the right track?
Ed

I don't know of any devices named "/dev/term/a" - and that's both Linux and Solaris.

Separating number in inputext with comma

hi all
I need to separate numbers with comma without using Enter .
I have an input text and used an clientListner on it : code is bellow
<f:view>
    <af:document id="d1">
     <af:resource type="javascript" source="/js/accounting.js"/>
     <af:resource type="javascript" source="/js/functions.js"/>
     
      <af:form id="f1">
<af:panelGroupLayout id="pgl1">
<af:inputText label="Label 1" id="it1">
<af:clientListener method="formatNum" type="keyUp"/>
</af:inputText>
        </af:panelGroupLayout>
      </af:form>
    </af:document>
</f:view>
I run this JavaScript on HTML page that is OK and my input text show separated number during entering ,
but I run my above jspx page ,it does not show until press the Enter key ...
please guide me .... I have an emergency condition please answer me soon
and then use this function for handling...
function.js :
function formatNum(evt) {
    var inputfield = evt.getSource();
    var num = accounting.unformat(inputfield.getValue());
    var formatNum = accounting.formatNumber(num);
    inputfield.setValue(formatNum);
    return true;
accounting.js
* accounting.js v0.3.2
* Copyright 2011, Joss Crowcroft
* Freely distributable under the MIT license.
* Portions of accounting.js are inspired or borrowed from underscore.js
* Full details and documentation:
* http://josscrowcroft.github.com/accounting.js/
(function(root, undefined) {
/* --- Setup --- */
// Create the local library object, to be exported or referenced globally later
var lib = {};
// Current version
lib.version = '0.3.2';
/* --- Exposed settings --- */
// The library's settings configuration object. Contains default parameters for
// currency and number formatting
lib.settings = {
currency: {
symbol : "$", // default currency symbol is '$'
format : "%s%v", // controls output: %s = symbol, %v = value (can be object, see docs)
decimal : ".", // decimal point separator
thousand : ",", // thousands separator
precision : 2, // decimal places
grouping : 3 // digit grouping (not implemented yet)
number: {
precision : 0, // default precision on numbers is 0
grouping : 3, // digit grouping (not implemented yet)
thousand : ",",
decimal : "."
/* --- Internal Helper Methods --- */
// Store reference to possibly-available ECMAScript 5 methods for later
var nativeMap = Array.prototype.map,
nativeIsArray = Array.isArray,
toString = Object.prototype.toString;
* Tests whether supplied parameter is a string
* from underscore.js
function isString(obj) {
return !!(obj === '' || (obj && obj.charCodeAt && obj.substr));
* Tests whether supplied parameter is a string
* from underscore.js, delegates to ECMA5's native Array.isArray
function isArray(obj) {
return nativeIsArray ? nativeIsArray(obj) : toString.call(obj) === '[object Array]';
* Tests whether supplied parameter is a true object
function isObject(obj) {
return obj && toString.call(obj) === '[object Object]';
* Extends an object with a defaults object, similar to underscore's _.defaults
* Used for abstracting parameter handling from API methods
function defaults(object, defs) {
var key;
object = object || {};
defs = defs || {};
// Iterate over object non-prototype properties:
for (key in defs) {
if (defs.hasOwnProperty(key)) {
// Replace values with defaults only if undefined (allow empty/zero values):
if (object[key] == null) object[key] = defs[key];
return object;
* Implementation of `Array.map()` for iteration loops
* Returns a new Array as a result of calling `iterator` on each array value.
* Defers to native Array.map if available
function map(obj, iterator, context) {
var results = [], i, j;
if (!obj) return results;
// Use native .map method if it exists:
if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
// Fallback for native .map:
for (i = 0, j = obj.length; i < j; i++ ) {
results[i] = iterator.call(context, obj[i], i, obj);
return results;
* Check and normalise the value of precision (must be positive integer)
function checkPrecision(val, base) {
val = Math.round(Math.abs(val));
return isNaN(val)? base : val;
* Parses a format string or object and returns format obj for use in rendering
* `format` is either a string with the default (positive) format, or object
* containing `pos` (required), `neg` and `zero` values (or a function returning
* either a string or object)
* Either string or format.pos must contain "%v" (value) to be valid
function checkCurrencyFormat(format) {
var defaults = lib.settings.currency.format;
// Allow function as format parameter (should return string or object):
if ( typeof format === "function" ) format = format();
// Format can be a string, in which case `value` ("%v") must be present:
if ( isString( format ) && format.match("%v") ) {
// Create and return positive, negative and zero formats:
return {
pos : format,
neg : format.replace("-", "").replace("%v", "-%v"),
zero : format
// If no format, or object is missing valid positive value, use defaults:
} else if ( !format || !format.pos || !format.pos.match("%v") ) {
// If defaults is a string, casts it to an object for faster checking next time:
return ( !isString( defaults ) ) ? defaults : lib.settings.currency.format = {
pos : defaults,
neg : defaults.replace("%v", "-%v"),
zero : defaults
// Otherwise, assume format was fine:
return format;
/* --- API Methods --- */
* Takes a string/array of strings, removes all formatting/cruft and returns the raw float value
* alias: accounting.`parse(string)`
* Decimal must be included in the regular expression to match floats (defaults to
* accounting.settings.number.decimal), so if the number uses a non-standard decimal
* separator, provide it as the second argument.
* Also matches bracketed negatives (eg. "$ (1.99)" => -1.99)
* Doesn't throw any errors (`NaN`s become 0) but this may change in future
var unformat = lib.unformat = lib.parse = function(value, decimal) {
// Recursively unformat arrays:
if (isArray(value)) {
return map(value, function(val) {
return unformat(val, decimal);
// Fails silently (need decent errors):
value = value || 0;
// Return the value as-is if it's already a number:
if (typeof value === "number") return value;
// Default decimal point comes from settings, but could be set to eg. "," in opts:
decimal = decimal || lib.settings.number.decimal;
// Build regex to strip out everything except digits, decimal point and minus sign:
var regex = new RegExp("[^0-9-" + decimal + "]", ["g"]),
unformatted = parseFloat(
("" + value)
.replace(/$(.*)$/, "-$1") // replace bracketed values with negatives
.replace(regex, '')         // strip out any cruft
.replace(decimal, '.')      // make sure decimal point is standard
// This will fail silently which may cause trouble, let's wait and see:
return !isNaN(unformatted) ? unformatted : 0;
* Implementation of toFixed() that treats floats more like decimals
* Fixes binary rounding issues (eg. (0.615).toFixed(2) === "0.61") that present
* problems for accounting- and finance-related software.
var toFixed = lib.toFixed = function(value, precision) {
precision = checkPrecision(precision, lib.settings.number.precision);
var power = Math.pow(10, precision);
// Multiply up by precision, round accurately, then divide and use native toFixed():
return (Math.round(lib.unformat(value) * power) / power).toFixed(precision);
* Format a number, with comma-separated thousands and custom precision/decimal places
* Localise by overriding the precision and thousand / decimal separators
* 2nd parameter `precision` can be an object matching `settings.number`
var formatNumber = lib.formatNumber = function(number, precision, thousand, decimal) {
// Resursively format arrays:
if (isArray(number)) {
return map(number, function(val) {
return formatNumber(val, precision, thousand, decimal);
// Clean up number:
number = unformat(number);
// Build options object from second param (if object) or all params, extending defaults:
var opts = defaults(
(isObject(precision) ? precision : {
precision : precision,
thousand : thousand,
decimal : decimal
lib.settings.number
// Clean up precision
usePrecision = checkPrecision(opts.precision),
// Do some calc:
negative = number < 0 ? "-" : "",
base = parseInt(toFixed(Math.abs(number || 0), usePrecision), 10) + "",
mod = base.length > 3 ? base.length % 3 : 0;
// Format the number:
return negative + (mod ? base.substr(0, mod) + opts.thousand : "") + base.substr(mod).replace(/(\d{3})(?=\d)/g, "$1" + opts.thousand) + (usePrecision ? opts.decimal + toFixed(Math.abs(number), usePrecision).split('.')[1] : "");
* Format a number into currency
* Usage: accounting.formatMoney(number, symbol, precision, thousandsSep, decimalSep, format)
* defaults: (0, "$", 2, ",", ".", "%s%v")
* Localise by overriding the symbol, precision, thousand / decimal separators and format
* Second param can be an object matching `settings.currency` which is the easiest way.
* To do: tidy up the parameters
var formatMoney = lib.formatMoney = function(number, symbol, precision, thousand, decimal, format) {
// Resursively format arrays:
if (isArray(number)) {
return map(number, function(val){
return formatMoney(val, symbol, precision, thousand, decimal, format);
// Clean up number:
number = unformat(number);
// Build options object from second param (if object) or all params, extending defaults:
var opts = defaults(
(isObject(symbol) ? symbol : {
symbol : symbol,
precision : precision,
thousand : thousand,
decimal : decimal,
format : format
lib.settings.currency
// Check format (returns object with pos, neg and zero):
formats = checkCurrencyFormat(opts.format),
// Choose which format to use for this value:
useFormat = number > 0 ? formats.pos : number < 0 ? formats.neg : formats.zero;
// Return with currency symbol added:
return useFormat.replace('%s', opts.symbol).replace('%v', formatNumber(Math.abs(number), checkPrecision(opts.precision), opts.thousand, opts.decimal));
* Format a list of numbers into an accounting column, padding with whitespace
* to line up currency symbols, thousand separators and decimals places
* List should be an array of numbers
* Second parameter can be an object containing keys that match the params
* Returns array of accouting-formatted number strings of same length
* NB: `white-space:pre` CSS rule is required on the list container to prevent
* browsers from collapsing the whitespace in the output strings.
lib.formatColumn = function(list, symbol, precision, thousand, decimal, format) {
if (!list) return [];
// Build options object from second param (if object) or all params, extending defaults:
var opts = defaults(
(isObject(symbol) ? symbol : {
symbol : symbol,
precision : precision,
thousand : thousand,
decimal : decimal,
format : format
lib.settings.currency
// Check format (returns object with pos, neg and zero), only need pos for now:
formats = checkCurrencyFormat(opts.format),
// Whether to pad at start of string or after currency symbol:
padAfterSymbol = formats.pos.indexOf("%s") < formats.pos.indexOf("%v") ? true : false,
// Store value for the length of the longest string in the column:
maxLength = 0,
// Format the list according to options, store the length of the longest string:
formatted = map(list, function(val, i) {
if (isArray(val)) {
// Recursively format columns if list is a multi-dimensional array:
return lib.formatColumn(val, opts);
} else {
// Clean up the value
val = unformat(val);
// Choose which format to use for this value (pos, neg or zero):
var useFormat = val > 0 ? formats.pos : val < 0 ? formats.neg : formats.zero,
// Format this value, push into formatted list and save the length:
fVal = useFormat.replace('%s', opts.symbol).replace('%v', formatNumber(Math.abs(val), checkPrecision(opts.precision), opts.thousand, opts.decimal));
if (fVal.length > maxLength) maxLength = fVal.length;
return fVal;
// Pad each number in the list and send back the column of numbers:
return map(formatted, function(val, i) {
// Only if this is a string (not a nested array, which would have already been padded):
if (isString(val) && val.length < maxLength) {
// Depending on symbol position, pad after symbol or at index 0:
return padAfterSymbol ? val.replace(opts.symbol, opts.symbol+(new Array(maxLength - val.length + 1).join(" "))) : (new Array(maxLength - val.length + 1).join(" ")) + val;
return val;
/* --- Module Definition --- */
// Export accounting for CommonJS. If being loaded as an AMD module, define it as such.
// Otherwise, just add `accounting` to the global object
if (typeof exports !== 'undefined') {
if (typeof module !== 'undefined' && module.exports) {
exports = module.exports = lib;
exports.accounting = lib;
} else if (typeof define === 'function' && define.amd) {
// Return the library as an AMD module:
define([], function() {
return lib;
} else {
// Use accounting.noConflict to restore `accounting` back to its original value.
// Returns a reference to the library's `accounting` object;
// e.g. `var numbers = accounting.noConflict();`
lib.noConflict = (function(oldAccounting) {
return function() {
// Reset the value of the root's `accounting` variable:
root.accounting = oldAccounting;
// Delete the noConflict method:
lib.noConflict = undefined;
// Return reference to the library to re-assign it:
return lib;
})(root.accounting);
// Declare `fx` on the root (global/window) object:
root['accounting'] = lib;
// Root will be `window` in browser or `global` on the server:
}(this));

hi all
I have an input text that I want to separate it's value with comma
this is my input text :
<af:inputText value="#{bindings.LacreditAmt.inputValue}"
label="#{bindings.LacreditAmt.hints.label}"
required="#{bindings.LacreditAmt.hints.mandatory}"
columns="#{bindings.LacreditAmt.hints.displayWidth}"
shortDesc="#{bindings.LacreditAmt.hints.tooltip}"
id="it8"
maximumLength="#{bindings.LacreditAmt.hints.precision}"
converter="converter.BIGDECIMALMONEYCONVERTER"
clientComponent="true">
<f:validator binding="#{bindings.LacreditAmt.validator}"/>

<af:clientListener method="handleNumberFormatConversion" type="keyUp"/>
</af:inputText>
and use this java Script for comma separated value :
problem is : when I used firebug for testing this java Script ,everything is OK and 'result' variable shown
the correct value (comma separated value) but in fact the correct value did not show
in input text !!!!!
please guide me soon.
I appreciated in advance
function handleNumberFormatConversion(evt){
        var inputField = evt.getCurrentTarget();
        var keyPressed = evt.getKeyCode();
        var oldValue = inputField.getSubmittedValue();
        var validKeys = new Array(48,49,50,51,52,53,54,55, 56,57,96,97,98,99,100, 101,102,103,104,105,AdfKeyStroke.ARROWRIGHT_KEY, AdfKeyStroke.ARROWLEFT_KEY, AdfKeyStroke.BACKSPACE_KEY, AdfKeyStroke.DELETE_KEY, AdfKeyStroke.END_KEY, AdfKeyStroke.ESC_KEY, AdfKeyStroke.TAB_KEY);
        var numberKeys = new Array(48,49,50,51,52,53,54,55, 56,57,96,97,98,99,100, 101,102,103,104,105, AdfKeyStroke.BACKSPACE_KEY, AdfKeyStroke.DELETE_KEY);
        var isValidKey = false;
        for (var i=0; i < validKeys.length; ++i){
            if (validKeys[i] == keyPressed) {
                isValidKey = true;
                break;
        if(isValidKey){
                var isNumberKey = false;
            for (var n=0; n < numberKeys.length; ++n){
                if(numberKeys[n] == keyPressed){
                    isNumberKey = true;
                    break;
            if(isNumberKey){
                var formatLength = 25;
                if(formatLength == oldValue.length){
                    inputField.setValue(oldValue);
                    evt.cancel();
                else {
                    var firstNeg = false;
                    var lastNeg = false;
                    if (oldValue.charAt(0) == '(')
                        firstNeg = true;
                    if(oldValue.contains(')')){
                      lastNeg = true;
                    oldValue = oldValue.replace('(', "");
                    oldValue = oldValue.replace(')', "");
                    var result = "";
                    while (oldValue.contains(",")) {
                        oldValue = oldValue.replace(",", "");
                    for (i = oldValue.length - 3;i > 0;i -= 3) {
                        result = ",".concat(oldValue.substring(i, i + 3), result);
                    result = oldValue.substring(0, (oldValue.length % 3 == 0) ? 3 : oldValue.length % 3).concat(result);
                    if (firstNeg)
                        result = '(' + result;
                    if (lastNeg) {
                        result = result + ')';
                    inputField.setValue(result);
                    evt.cancel();
                    return true;
        else {
            inputField.setValue(oldValue);
            evt.cancel();

Configure comm.api in tomcat

hello friends,
i want to configure comm.api in tomcat5.5. please help me
Thanks in advance.
javax.comm: Error loading javax.comm.properties!
null
java.io.IOException: javax.comm: platform driver class name = null
(Check 'driver' property in javax.comm.properties)
at javax.comm.CommPortIdentifier.loadDriver(CommPortIdentifier.java:244)
at javax.comm.CommPortIdentifier.<clinit>(CommPortIdentifier.java:109)
at welcome.list(welcome.java:47)
at welcome.doGet(welcome.java:21)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)

If your operating system works it as a comm port you can readily run the BlackBox example that comes with the comm 2.0 API and see if it picks it up.

Comm Api In IRDA

I Have connected IRDA in USB and Create a virtual modem com4.My work is to send message between mobile through PC and vice versa.First We work on serial cable connected with my PC and Nokia6610.But
I face lot of Problem with AT command so I wanna be work with IRDA because All AT command work fine.
I test it in Hyperterminal.But We will be implemented it only one way and that is comm api.But Comm api works on Serial and Parallal Port.But I create Virtual port com4.Can i do it in comm api with IRDA connection?
I Want to know Only One Thing----------------
Can i work IRDA with my comm API?
(Though It is not connected with the serial port but create a virtual port com4)
PLS & PLS Help Me Only This ANS.

If your operating system works it as a comm port you can readily run the BlackBox example that comes with the comm 2.0 API and see if it picks it up.

Is Comm Api works in IRDa Conn

I Have connected IRDA in USB and Create a virtual modem com4.My work is to send message between mobile through PC and vice versa.First We work on serial cable connected with my PC and Nokia6610.But
I face lot of Problem with AT command so I wanna be work with IRDA because All AT command work fine.
I test it in Hyperterminal.But We will be implemented it only one way and that is comm api.But Comm api works on Serial and Parallal Port.But I create Virtual port com4.Can i do it in comm api with IRDA connection?
I Want to know Only One Thing----------------
Can i work IRDA with my comm API?
(Though It is not connected with the serial port but create a virtual port com4)
PLS & PLS Help Me Only This ANS.

I know it's a few months later... just in case you're still wondering. Yes you can access IrDA through the Comm API check out RxTx.org they have a very active forum

Comm api for windows platform

I want to use comm api with JSP on windows platform.
I am using Tomcat 5.0 for running JSP.
On Sun's site comm api available only for solaris and linux platforms.
what should i do?
I also want to know prefered settings for configuring comm api with Tomcat. i.e.Where should i put appropriate comm API file in Tomcat?
Please also mention the necessary settings for classpath.
Thanks for help in advance.

Version 2.0 of Java Communications was available for Windows, though I can't see how to download it from the Sun web site now...

CRC with comm api?

Similar Messages

Maybe you are looking for