TLB – Top Level Baseline

Сентябрь 7, 2022

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TLB – Top Level Baseline

Содержание

2. Top Level? A VI that can be considered the primary of a system or major component
3. Get Installed Install VI Package Manager (free community edition) www.jki.net Install package http://lavag.org/topic/13003-tlb-top-level-baseline/ Restart LV Refreshes
4. Get Developing Tools>>TLB – New Baseline Follow Interactive Dialog
5. Baseline Architecture Application INIT once and only once code Event Handler Loop user interaction response Primary
6. Application INIT Sequence of cases primes the application stacked instead of flat for cleanliness Not ‘all’
7. Event Handler Responsive to button pushes and value changes Pre-defined cases handle window close and shutdown
8. Primary Execution Pre-defined cases handle common functions Init Error 95% of work happens here ‘Default’ case
9. Application Close Handles display consideration if built into EXE No real processing should happen here Use
10. The SHIFTER Master state cluster ALL data associated with application NEVER send into sub-VI Easily add
11. ‘User Parameters’ Scalar inputs on the front panel numerics, strings, etc. Register for ‘value change’ event
12. ‘Display Data’ Scalars, plots etc Any thing that needs to get updated on the panel Store
13. Extra Handy Things Gracefully shuts down both loops Idle state defaults to 1s delay Caches current
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Слайд 2

Top Level?
A VI that can be considered the primary of a

system
or major component of a system
Typically has front panel shown
but not a requirement
Controls flow of application and processing
Processing happens within executed states
Runs for lifetime of application or component

Слайд 3

Get Installed
Install VI Package Manager (free community edition)
www.jki.net
Install package
http://lavag.org/topic/13003-tlb-top-level-baseline/
Restart LV
Refreshes tools

Слайд 4

Get Developing
Tools>>TLB – New Baseline
Follow Interactive Dialog

Слайд 5

Baseline Architecture
Application INIT
once and only once code
Event Handler Loop
user interaction response
Primary

Execution Loop
main flow of program

App Close
close references & shutdown

Слайд 6

Application INIT
Sequence of cases
primes the application
stacked instead of flat for cleanliness
Not

‘all’ init. code goes here
Just once and only once stuff
Enqueues specific set of states to Primary Execution

Слайд 7

Event Handler
Responsive to button pushes and value changes
Pre-defined cases handle window

close and shutdown
Source of queued messages to Primary Execution

Слайд 8

Primary Execution
Pre-defined cases handle common functions
Init
Error
95% of work happens here
‘Default’ case

handles state typos

Слайд 9

Application Close
Handles display consideration if built into EXE
No real processing should

happen here
Use ‘Exit’ in Primary Execution

Слайд 10

The SHIFTER
Master state cluster
ALL data associated with application
NEVER send into sub-VI
Easily

add elements through Typedef shortcut

Слайд 11

‘User Parameters’
Scalar inputs on the front panel
numerics, strings, etc.
Register for ‘value

change’ event dynamically
Prevents event structure bloat
All terminals in 1 state: Update User Param.
Enables all param to be accessible to entire program without need for local Var

Слайд 12

‘Display Data’
Scalars, plots etc
Any thing that needs to get updated on

the panel
Store in shifter to provide data access to entire app
Instead of outputting directly to indicator
Call ‘Update Display’ state to refresh display

Слайд 13

Extra Handy Things
Gracefully shuts down both loops
Idle state defaults to 1s

delay
Caches current values of controls on startup in case of change while not running
Graceful error in case of typo
Interactive or headless execution
Your choice
Error handling allows Stop OR continue

TLB – Top Level Baseline

Содержание

Top Level?A VI that can be considered the primary of a

Get InstalledInstall VI Package Manager (free community edition)www.jki.net Install packagehttp://lavag.org/topic/13003-tlb-top-level-baseline/Restart LVRefreshes tools

Get DevelopingTools>>TLB – New BaselineFollow Interactive Dialog

Baseline ArchitectureApplication INITonce and only once codeEvent Handler Loopuser interaction responsePrimary

Application INITSequence of casesprimes the applicationstacked instead of flat for cleanlinessNot

Event HandlerResponsive to button pushes and value changesPre-defined cases handle window

Primary ExecutionPre-defined cases handle common functionsInitError95% of work happens here‘Default’ case

Application CloseHandles display consideration if built into EXENo real processing should

The SHIFTERMaster state clusterALL data associated with applicationNEVER send into sub-VIEasily

‘User Parameters’Scalar inputs on the front panelnumerics, strings, etc.Register for ‘value

‘Display Data’Scalars, plots etcAny thing that needs to get updated on

Extra Handy ThingsGracefully shuts down both loopsIdle state defaults to 1s

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