Technical details

Communication with devices

Here is a commented log when formatting a SSSD floppy disk with the TI disk controller. Actually, this dump was achieved using MESS and putting in some printf lines.

Setting up RXTX for Java

RXTX is a serial and parallel port API implementation which is available for Windows and Unix systems, as binary and source code files. The complete documentation and the download location is at http://rxtx.qbang.org/wiki/index.php/Main_Page. You should build the binaries for 64 bit systems from the sources.

Instructions for Linux:

• Unzip the file
• Enter the source directory, ./configure
• Install missing libraries if errors are reported.
• make
• make install

The file RXTXcomm.jar should now be found in the lib/ext folder of your Java installation. The native libraries librxtxSerial.so, librxtxParallel.so and more have been copied into the lib/i386 or lib/amd64 folders (32 bit or 64 bit build; Intel 64 bit also uses the amd64 folder).

At first you will likely get an error message during Java execution:

check_group_uucp(): error testing lock file creation Error details:Permission deniedcheck_lock_status: No permission to create lock file.

please see: How can I use Lock Files with rxtx? in INSTALL

You must be member of the uucp and lock groups. Check /etc/group and add your user name behind both lines, or use your favorite system management tool.