lsftpl : the LCU Server Template

This chapter describes the detailed analysis of the module lsftpl, the template module based on the framework lsf for the creation of any Software Device application.

lsftpl is a Software Device Template controlling a large set of Hard- and Software devices.

It is fully scalable to the specific needs of the application.

Template Application

The lsftpl application

For the purpose of the template, a large set of hardware and software devices is supported so as to offer full coverage examples, as listed below:

4 analog signals (2 Input, 2 Output),
4 digital signals (2 Input, 2 Output),
2 motors,
3 serial ports, wherefrom one of type /tyCo
1 background task
2 sub-ordinated Software devices

Up to 24 devices may be controlled by the application. In order to achieve optimum flexibility, the control of the devices is table driven.

Table driven control

One table contains the necessary information for driving the control of all the devices registered in it. Individually, each device can be set in simulation or ignored. This table can be dynamically modified; the changes are effective with the next initialization.

One file configuration

In order to keep the number of files to be modified

Custom Application

Instantiating the code

Configuration

Building the Application

Detailed Design

The Database

The Application Server

The Command Interface (ACI & CDT)

The Command Description Table (CIT)

The Programmatic Interface (API)

Last modified: Mon Sep 18 17:07:06 METDST 2000