Write to i2c Register from java

Question

My setup: Java 1.5, SUSE Linux 10.2
I'm trying to set registers over i2c.
From command line this can be done using "i2cset [options] [bus_address] [chip_address] [register] [value] b".
I'd like to do this without using the command line, directly from java (may be using JNI and some native libraries).
I searched google, tried to find some examples at koders.com - but no luck.
I hope someone can point me in the right direction... Any hint on this subject is highly appreciated!

Answer 1

Yes, as I described, i don't want to use Runtime.exec().
There are many registers which have to be set alternating, so i2cset has to be executed over 4 times a second - which is bad.
I'm currently doing this in my application:
ProcessBuilder pb = new ProcessBuilder(new String[] { I2C_SET_CMD, I2C_OPTION_NOQUESTIONS, I2C_BUS_ADRESS,
          I2C_CHIP_ADRESS, register, value, "b" });
Process p = pb.start();
int exitCode = p.waitFor();The problem is, that there are Filehandles left open (by i2cset?? I think so...) and that crashes linux after some hours of operating (to many open files).
That's the reason, why I'm looking for a solution without Runtime.exec() and especially without using ic2set.
At the moment I don't have native libraries or even native code to do this. Is there a native library which can be used from within java to set i2c Registers?
Or is it somehow possible to do address i2c registers directly from java (whitout using native code)?