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: 365

Reply to This

Replies to This Discussion

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

 

Thanks Nem.  I will check those out.

 

Paul

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.

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

Establishing Change Agents within Organisations Using Shu-Ha-Ri

Shu-Ha-Ri provides us with a learning path toward being agile by mastering the basics and understanding the fundamentals to gain incremental success. By having their own change agents, organisations can adapt quickly to changing market needs and get a competitive edge.

By Ben Linders

Google Launches the First NVIDIA Ampere A100 GPUs in the Cloud with Computing Engine A2 VMs

In a recent blog post, Google announced the introduction of the Accelerator-Optimized VM (A2) family on Google Compute Engine, based on the NVIDIA Ampere A100 Tensor Core GPU. A2 provides up to 16 GPUs in a single VM and is the first A100-based offering in the public cloud.

By Steef-Jan Wiggers

Twitter Hack was Inside Job

Yesterday, a number of tweets were posted from a number of high profile accounts advertising a 2-for-1 scam on Bitcoin. What happened and why? InfoQ investigates.

By Alex Blewitt

C# 9: New `and`, `or`, and `not` Keywords for Pattern Matching

Though it may sound like our occasional April Fools Day joke, C# 9 is looking to add `and`, `or`, and `not` to its list of keywords. Specifically, for use in pattern matching.

By Jonathan Allen

AWS Announces General Availability of Amazon RDS Proxy

Amazon RDS Proxy is a new fully managed, highly available database proxy for MySQL and PostgreSQL databases running on Amazon RDS and Aurora. The service is tailored to serverless architectures and other applications that open and close database connections at a high rate.

By Renato Losio

© 2020   Created by Michael Levin.   Powered by

Badges  |  Report an Issue  |  Terms of Service