STW TC1, User Manual

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7 Teleservice Application Framework
User Manual 87/374
7 Teleservice Application Framework
7.1 Overview
STW provides two different ways for application development on the module. The first way is simply for the
developer to write applications from scratch, using the board support package and the sample code that is
provided. Also as any open source applications or tools that make sense for that project can be used. The linux
operating system provides a very flexible environment for this type of approach and the developer can choose
any language or set of tools in the wide world of linux development.
A second way for development is provided through a hierarchy of components that STW has developed and
will continue developing around the Teleservice concept. The foundation of this hierarchy is the Telematics
Application Framework (TAF). This framework consists of a set of linux daemons and utilities that provide
useful functions for the developer.
A typical teleservice application consists of a number of system components that are part of the dedicated
teleservice module (e.g. TC1) on the one hand and external components (eg. ESX, remote computers) on the
other hand. See the following examples:

System components within the teleservice module: RTC, I/Os, GSM-module, GPS-module, filesystem /
datalogger, bluetooth, network stacks etc.

External system components: vehicle controller (ESX, IOX, vehicle sensors and actuators; controllers and
components of different brands), remote controllers, servers and PCs.

Each component can be represented by a software module that provides certain data and services. In
order to enable applications to make use of those services an inter-process mechanism is required.