Pepper Computer RS232, RS485 12 ‘C’ Programming 6.2.12.1 SM-SSI Library, Hardware Requirements

Chapter 6 Communications Modules SMART I/O User’s Manual

6.2.12‘C’ Programming 6.2.12.1 SM-SSI Library

The SM-SSI library of functions smartio.l provide a convenient way of accessing the SM-SSI module.

•All functions are written in ANSI C;

•Prototypes are to be found in the file ssilib.h.

Hardware Requirements

•SMART I/O Base Module or Base Module and Extension unit;

•SM-SSI1 Module.

Software Requirements

The compiler from one of the following:

•Ultra C Version 1.1.2 or higher;

•FasTrak 2.02 or higher.

The leftmost SM-Module has number 0 assigned to it a far as programming is concerned although physically this is slot 1!

Before a library function can be used, the function SMSSIInit must first be called. This allocates the requested resources. Furthermore, this function needs to be called for each SM-SSI Module called within the task. Upon completion of the application, the function SMSSIDeInit needs to be called for each SM-SSI Module that has been initialized.

In order to illustrate the use of the SM-SSI library, an application example called demssi.c can be found in the SMART I/O application directory (nor- mally found in /<device>/APPLIC/SMART/CMDS).

6

October 01, 1996 ©1996 PEP Modular Computers GmbH Page 6 - 29