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: 460

▶ 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.

 

Enjoy the site? Support Codetown with your donation.



InfoQ Reading List

Podcast: Building the Muscles for Critical Thinking

In this podcast Shane Hastie, Lead Editor for Culture & Methods spoke to Dannielle Pearson about the importance of critical thinking in technology.

By Dannielle Pearson

.NET Aspire Preview 6: Enhanced Security and Testing, New Features, and More

This week Microsoft released Preview 6 of the .NET Aspire project. Significant changes have been implemented to enhance the security and reliability of the platform. This release, version 8.0.0-preview.6.24214.1, introduces several noteworthy additions, like changes related to templates, components, dashboard, testing and more.

By Almir Vuk

Presentation: Sleeping at Scale - Delivering 10k Timers per Second per Node with Rust, Tokio, Kafka, and Scylla

Lily Mara, Hunter Laine walk through the design of a system, its performance characteristics, and how they scaled it.

By Lily Mara, Hunter Laine

Article: Is Your Test Suite Brittle? Maybe It’s Too DRY

One important design principle in software development is DRY – Don’t Repeat Yourself. However, when DRY is applied to test code, it can cause the test suite to become brittle — difficult to understand, maintain, and change. In this article, I will present some indications that a test suite is brittle, guidelines to follow when reducing duplication in tests, and better ways to DRY up tests.

By Kimberly Hendrick

Allegro Reduces Kafka Producer Latency Outliers by 82% After Switching to XFS

Allegro experimented with different performance optimization options to improve Apache Kafka producer tail latency and eventually switched all its clusters to the XFS filesystem. The company used Kafka protocol sniffing, JVM profiling, and eBPF, which proved instrumental in identifying and eliminating performance bottlenecks.

By Rafal Gancarz

© 2024   Created by Michael Levin.   Powered by

Badges  |  Report an Issue  |  Terms of Service