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Programming in LabVIEW
Alan AndersonSoftware Mentor
TechnoKats Robotics Team(FRC #45)
Programming in LabVIEW
What is LabVIEW?
How does it work?
How is it used for FRC?
What is LabVIEW?
Laboratory Virtual Instrument Engineering Workbench
Designed for instrument/machine control
Virtual emulates Physical
Dataflow programming
Graphical Language
What is LabVIEW?
Dataflow programming
Execution occurs when data is ready
Not “procedural” like Java or C++
Inherently parallel
What is LabVIEW?
Graphical language
Icons and connectors
No underlying text representation
Not a GUI on top of another languageRobotC
EasyC
How does LabVIEW work?
Virtual Instruments (VIs)
Terminals
Nodes
Wires
Structures
Variables
SubVIs
How does LabVIEW work?
Virtual Instruments (VIs)
Front panel (user interface)
Block diagram (code)
Icon and connector (API)
How does LabVIEW work?
Terminals
controls
indicators
(local variables)
How does LabVIEW work?
Nodes
statements
functions
procedures
(SubVIs)
How does LabVIEW work?
Wires
one source, arbitrary destinations
data typesnumeric
boolean
string
arrays
clusters
How does LabVIEW work?
Structures
For Loop
While Loop
Case block
Sequence
How does LabVIEW work?
Variables
local variables
global variables
(registry)
How does LabVIEW work?
SubVIs
Front panel becomes inputs and outputs
Block diagram determines behavior
Icon and connector pane defines external use
How does LabVIEW work?
Programming
menus
palettes
wiring
help
How is LabVIEW used for FRC?
Installation
WPIlib
LabVIEW RealTime
FRC cRIO Robot Project template
FRC Dashboard Project template
Example Projects
How is LabVIEW used for FRC?
Installation
DVD #1 of 2
~2 hours
Use Internet for activation
How is LabVIEW used for FRC?
WPIlib
Servos & PWMs
Relays & Solenoids
Digital I/O
Analog input
I2C communication
Abstracted stuff
How is LabVIEW used for FRC?
Abstracted stuff
Motor speed control
Multimotor drive control
Air compressor
Counters
Quadrature encoders
Accelerometers
Yaw Rate “gyro” sensors
How is LabVIEW used for FRC?
LabVIEW RealTime
Interactive execute: “run”
Compile to exe: “build”
Target cRIO: “deploy”
How is LabVIEW used for FRC?
Predefined Templates
FRC cRIO Robot ProjectRobot Framework
Experiment Framework
FRC Dashboard Project (targets PC)
Example ProjectsReading sensors
Controlling actuators
Programming in LabVIEW
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Programming in LabVIEW
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Programming in LabVIEW
Alan AndersonSoftware Mentor
TechnoKats Robotics Team(FRC #45)