Using rs-232 in a java desktop application

Hello all:

 

I am fairly new to the Java world and would like some advice on how to handle rs-232 communications with a Java based GUI I am working on.  Several years ago I created a similar GUI with Visual Basic, but my coding skills are a bit rusty and I never got the communication thing completely figured out.  I could send command strings easy enough, but I had trouble getting responses and processing them quickly.

 

The current GUI is to control an RGB lighting system.  It has some sliders, some radio buttons, and a few check boxes.  When the sliders move a command string needs to be sent out.  It will have to happen quickly so that the change in light level is smooth.  When the radio buttons and check boxes are clicked, single commands will have to be sent out.

 

I would also like to be able to handle any responses sent back from the controller.  When the sliders are moved, there will be a lot of comm traffic coming back to the GUI.  I sure this will require a buffer of some kind, but I am not sure how to set it up.

 

Once I get the rs-232 option up and running, I need to look at communicating with the light controller via an Ethernet connection.

 

Any advise or assistance would be appreciated.

 

 

Paul Stearns

Views: 369

▶ Reply to This

Replies to This Discussion

Permalink Reply by Nemanja Nesic - NEM- on May 27, 2011 at 4:52pm

While I am not expert with java <> serial port communication I can give you a few reference links:

First I'd start with:  http://www.oracle.com/technetwork/java/index-jsp-141752.html

Then take a look at:  http://java.sun.com/products/javacomm/reference/docs/API_users_guid...

 

dont hesitate to ask if you get stuck.

 

-nem

 

Permalink Reply by Paul Stearns on May 27, 2011 at 5:00pm

Thanks Nem.  I will check those out.

 

Paul

Permalink Reply by Paul Stearns on June 1, 2011 at 5:44pm

I took a look at some of the documentation and it seems that RS-232 is not supported for Windows apps anymore.  If this is indeed the case, then I guess I need to look at sending communications via Ethernet and using a converter to get it to the RS-232 device.

 

Any guidance on how to proceed would be appreciated.

Permalink Reply by Nemanja Nesic - NEM- on June 9, 2011 at 9:57pm

While that is true for sun libraries and support for Win, there are other 3rd party that you can use:

hope this helps

 

nem

▶ Reply to Discussion

RSS

Happy 10th year, JCertif!

Notes

Welcome to Codetown!

Codetown is a social network. It's got blogs, forums, groups, personal pages and more! You might think of Codetown as a funky camper van with lots of compartments for your stuff and a great multimedia system, too! Best of all, Codetown has room for all of your friends.

When you create a profile for yourself you get a personal page automatically. That's where you can be creative and do your own thing. People who want to get to know you will click on your name or picture and…
Continue

Created by Michael Levin Dec 18, 2008 at 6:56pm. Last updated by Michael Levin May 4, 2018.

Looking for Jobs or Staff?

Check out the Codetown Jobs group.

There's also a free Java Jobs mailing list. It's a Yahoo group so you have to create a Yahoo account to use it.

 

Enjoy the site? Support Codetown with your donation.



InfoQ Reading List

Podcast: Emily Jaksch on the Myths, Misconceptions and Realities of the Millennial Generation

In this podcast Shane Hastie, Lead Editor for Culture & Methods, spoke to Emily Jaksch about the Myths, Misconceptions and Realities of the Millennial Generation.

By Emily Jaksch

Article: Kick-off Your Transformation by Imagining It Had Failed

Large scale change initiatives have a worryingly high failure rate. A chief reason for which is that serious risks are not identified early. One way to create the safety needed for everyone to speak openly about the risks they see is by running a pre-mortem. In a pre-mortem, we assume that the transformation had already failed and walk backward from there to investigate what led to the failure.

By Ayman Idris

Presentation: InfoQ Live Roundtable: Observability Patterns for Distributed Systems

The panelists explore how a sound observability strategy can help mitigate operational costs, and avoiding common pitfalls in monitoring distributed systems.

By Thomas Betts

Microsoft Edge Made Available on Linux

Microsoft recently announced the availability of the Microsoft Edge Dev Channel for Linux (initial preview release). The Edge browser is now available on all major operating systems, desktop and mobile. Enterprise developers, many of which use Linux, may now build and test web applications in their preferred platform. The move seeks to further position Edge as the browser for business.

By Bruno Couriol

Presentation: Automating Chaos Attacks

Daniel Albuquerque, Nikos Katirtzis show how to run attacks in both manual and automated ways.

By Daniel Albuquerque, Nikos Katirtzis

© 2020   Created by Michael Levin.   Powered by

Badges  |  Report an Issue  |  Terms of Service