Just ported a google RXTX library to the Android platform.    Check out the picture below, it shows the Motorola Droid phone talking to the FreeNAS device over the serial port.



More information and binaries are here http://v-lad.org/projects/gnu.io.android/.   The source code of port is here  https://github.com/vladistan/gnu.io.android/ .

If you have any questions, comments or support request post them below.

There is an excellent tutorial by Nirnimesh on how to compile native programs for Android here http://android-tricks.blogspot.com/2009/02/hello-world-c-program-on-using-android.html

Unfortunately things have changed a bit since last year when this post was written. Andy’s agcc script doesn’t work with the most recent Google NDK release 4B.

I have changed the script a little bit to address new path changes. The new script is available here http://android-cruft.googlecode.com/files/agcc-0.2.tgz.

Make sure to add this to your path

$HOME/AndroidNDK/build/prebuilt/linux-x86/arm-eabi-4.4.0/bin/

where AndroidNDK is your NDK installation directory.

Hope this works for you.