LabVIEW: Advanced Programming Techniques
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Summary
The graphical nature of LabVIEW makes it ideal for test and measurement applications and its use brings significant improvements in productivity over conventional programming languages. However, comprehensive treatments of the more advanced topics have been scattered and difficult to find-until now.
LabVIEW Advanced Programming Techniques offers in-depth coverage of the subjects that move you to the next level of programming-the level that allows full exploitation of LabVIEW's power and utility. These topics include:
Active X: Gain the background needed to use Active X in your LabVIEW applications.
Object-Oriented Technologies: Get a clear description of object analysis and see examples of how it can apply to LabVIEW applications.
Application structure: Discover a three-tiered architecture that results in robust, flexible, and easy to maintain code.
State machines: Get extensive coverage of several types of state machines-arguably the most useful programming tool available.
Exception handling: Learn how to detect, process, and resolve exceptions in your code.
Instrument drivers: See the value drivers bring to code readability and maintenance -Learn the techniques for constructing reusable drivers.
Multi-threading: Learn how to look at a LabVIEW code diagram to determine how many threads your application can use, then optimize the performance of the application.
Table of Contents
INTRODUCTION TO LABVIEW
Virtual Instruments
Help
Data Flow Programming
Menus and Palettes
Front Panel Controls
Block Diagram Functions
LABVIEW FEATURES
Global and Local Variables
Customizing Controls
Attribute Nodes
Reentrabt Vis
Libraries (.LLB)
File Manager
Web Server
Web Document Tool
Instrument Wizard
Profile Window
Auto SubVI Creation
Graphical Comparison Tools
Report Generation Palette
Application Builder
Sound Vis
Application Control
Advanced Palette
Source Code Control
Graphs
Data Logging
Find Feature
Print Documentation
VI History
Key Navigation
Bibliography
STATE MACHINES
Introduction
Enumerate Types and Type Definitions
Sequence Style State Machine
Test Executive Style State Machine
Classical Style State Machine
Queued Style State Machine
Drawbacks to using State Machines
Recommendations and Suggestions
Problems
APPLICATION STRUCTURE
Planning
Purpose of Structure
Software Models
Project Administration
Documentation
Three-Tiered Structure
Main Level
Second Level - Test Level
Bottom Level - Drivers
Style Tips
Summary
Chapter Bibliography
DRIVERS
Communication Standards
Driver Classifications
Inputs/Outputs
Error Handling
NI Spy
Driver Guidleines
Reuse and Development Reduction
Driver Example
IVI Drivers
Bibliography
EXCEPTION HANDLING
Exception Handling Defined
Types of Errors
Built-In Error Handling
Performing Exception Handling
Debugging Code
Summary
Bibliography
ACTIVE X
Introduction to OLE, COM, and Active X
COM
OLE
Active X
LavVIEW and Active X
VI Server
ACTIVE X EXAMPLES
Common Dialog Control
Progress Bar Control
Microsoft Calendar Control
Common Dialog Control
Image List Control
Web Browser Control
Microsoft Scripting Control
Microsoft Winsock control
Microsoft System Information Control
Microsoft MAPI Services
MAPI Messages Control
Microsoft Status Bar Control
Microsoft Tree View Control
Microsoft Agent
Registry Editing Control
Controlling Microsoft Word
Microsoft Access Control
Controlling LabVIEW from other Applications
Understanding Active X Error Codes
Controls that do not Work Well with LabVIEW
Advanced Active X Details
MULTI-THREADING IN LABVIEW
Multi-Threading Terminology
Thread Mechanics
Win32 Multi-Threading
Pthreads
Multi-Threading Problems
Multi-Threading Myths
Multi-Threaded LabVIEW
Thread Count Estimation for LabVIEW
Subroutines in LabVIEW
OBJECT ORIENTED PROGRAMMING IN LABVIEW
What is Object Oriented
Objects and Classes
Object Analysis
Object Design
Object Programming
Developing Objects in LabVIEW
Example, Developing Instrument Drivers
Object Template
Exercises
