The libtlc54x was build to easily access the A/D-Converters TLC548 and TLC549 from Texas Instruments through serial or parallel port. Most implementations requires to run as a kernel modul because of direct hardware addressing. This implementation runs in user space a uses only POSIX compliant functions. So it should run under all POSIX compliant operation systems. With this library just needs the device to be opened/closed and than you can read data from the TLC54x with a simple interface functions like this;

• tlc54x_open (char *device) -> open the specified device and return the file descriptor;
• tlc54x_close (int fd) -> close the device;
• tlc54x_read (int fd) -> get one byte of data with one simple call from the A/D-Converter.

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