© National Instruments Corporation v NI TestStand Advanced Architecture Series
Contents
Chapter 1
Code Module Development
Available TestStand Adapters .......................................................................................1-1
Where to Implement Functionality ................................................................................1-2
Functionality to Include in Code Modules ......................................................1-2
Functionality to Include in TestStand..............................................................1-3
Looping Internally or Externally.....................................................................1-3
Passing the SequenceContext Object Reference to Code Modules.................1-4
Strategies for Terminating or Breaking Sequences .......................................................1-5
Using Instrumentation within Code Modules ................................................................1-8
Performing Switching Functions ...................................................................................1-11
Handling Errors..............................................................................................................1-12
Load and Unload Options ..............................................................................................1-14
Locating Code Module Files..........................................................................................1-15
Conclusion .....................................................................................................................1-15
Chapter 2
Using the TestStand Object Model
Overview of TestStand Architecture .............................................................................2-1
Conceptual Overview of the TestStand Engine...............................................2-3
The TestStand API.........................................................................................................2-3
API Inheritance................................................................................................2-4
API Containment .............................................................................................2-7
Navigating through TestStand API Objects ....................................................2-8
Commonly Used API Objects........................................................................................2-10
Engine Object ..................................................................................................2-10
SequenceContext Object .................................................................................2-11
RunState Subproperty......................................................................................2-14
Dynamically Creating and Running Sequences.............................................................2-16
Additional TestStand APIs ............................................................................................2-17
Conclusion .....................................................................................................................2-18
Chapter 3
TestStand Type Management
Categories of TestStand Types ......................................................................................3-1
Data Types.......................................................................................................3-1
Standard Data Types........................................................................................3-2
Step Types .......................................................................................................3-2
