vxworks programmer's guide.pdf - DAQ Plone Site

VxWorks 5.4
Programmer’s Guide
1.2 Getting Started with the Tornado Development System
See the following documents for information on installing and configuring the
Tornado development system, including VxWorks. Information on configuration
differs depending on whether your development host is UNIX or Windows; thus,
the Tornado User’s Guide is host specific.
■
Tornado Getting Started provides information on installing all components of
the Tornado Development System as well as a tutorial covering the main
features of Tornado.
■
The Tornado User’s Guide provides information on configuring and connecting
the host and target environments, building your VxWorks application, booting
VxWorks, and running Tornado.
For either host, 8. Configuration and Build in this manual provides information on
using Tornado 1.0.1-style manual methods for VxWorks configuration.
For a complete overview of Tornado documentation, see the documentation guide
in the Tornado User’s Guide.
1.3 VxWorks: A Partner in the Real-time Development Cycle
UNIX and Windows hosts are excellent systems for program development and for
many interactive applications. However, they are not appropriate for real-time
applications. On the other hand, traditional real-time operating systems provide
poor environments for application development or for non-real-time components
of an application, such as graphical user interfaces (GUIs).
Rather than trying to create a single operating system that “does it all,” the Wind
River philosophy is to utilize two complementary and cooperating operating
systems (VxWorks and UNIX, or VxWorks and Windows) and let each do what it
does best. VxWorks handles the critical real-time chores, while the host machine is
used for program development and for applications that are not time-critical.
You can scale VxWorks to include exactly the feature combinations your
application requires. During development, you can include additional features to
speed your work (such as the networking facilities), then exclude them to save
resources in the final version of your application.
2