For serial communication with java, I used JNI (Java Native Interface) to make available a shared library I wrote in C that provides access to the serial port.  Might be other ways, but I have this up and running so I stopped looking into that area.
 
If anyone is interested in my project, I've included some links below.
 
-David
 
http://thermalhound.blogspot.com
http://grphoto.net/ttarb


Date: Thu, 22 Mar 2007 12:39:39 +1200
From: jwrgorman@gmail.com
To: gumstix-users@lists.sourceforge.net
Subject: [Gumstix-users] best serial port language to use

Hi,

I am interested in using a gumstix device to communicate to some external hardware over a serial port. I see that Python and Java are being used - does anyone have any experience with java and serial ports on the gumstix.  a second question is about the object database db4o.com - has anyone used this on a gumstix device? thanks, John


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