Java for embedded projects

A work colleague has asked me about the viability of using Java in electronics projects. I had a quick google and found a couple of decent links for JVMs for PIC/AVR etc. I was just wondering if there was any drawbacks, like compiled code size, less granular control etc.

Also is it better to use a hardware accelerator? I'd guess it would depend on the project?

Has anyone any experience or tips for an IT guy wanting to try his hand at electronics?

romilly over 15 years ago

Hi Ally,

It's quite a while (two years?) since I looked into this area, but then the 8-bit implementations were very, very limited and not very robust. If Java is a must, it might be worth looking at one of the implementations of Java in Silicon. Systronix specialise in this area.

On the other hand, If he knows Java, he can probably pick up enough C/C++ to program an arduino/clone or mbed very quickly - with plenty of good sample code available to steal reuse.
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Jorge_Garcia over 15 years ago

Hi Allistair,

If I recall correctly parallax makes a Java based version of the venerable basic stamp microcontroller called the Javelin Stamp. I have included the link in case he want to check it out.

http://www.parallax.com/Store/Microcontrollers/JavelinStamp/tabid/517/ProductID/5/List/1/Default.aspx?SortField=ProductName,ProductName

This controller would allow him to use his Java skills without to much hassle. I agree though that if your friend is proficient in Java is won't be a very big to jump to program in C/C++.

hth,

Jorge Garcia
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Former Member over 15 years ago

Hi Ally,

I second that. Small devices supporting Java are best done by hardware supporting java - a small software jvm on a pic or avr µController won't work that great and/or is very limited. The fun begins when using more powerful devices based on ARM or POWER. The OpenJDK/IcedTea guys have done a great job porting their JIT to these plattforms, giving you a free and unlimited software JVM that works great.

Best regards

Georg Schild
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