Valid for use with hash command: HMI
Implemented on the following platforms: Windows standalone
This function determines which controls will be available on the SimpleHMI screen. Mask consists of 8 semaphores packed into a single byte. Each semaphore controls the visibility of one item. This allows you to control what your Enduser will see in the standalone Windows version of SimpleHMI.
The following defines the bit (semaphore) numbers within the byte, and what they control:
| Bit | Controls | Notes |
|---|---|---|
| 0 | Connect button | |
| 1 | Reset button | |
| 2 | CLS button | |
| 3 | Rulers button | |
| 4 | A/R (aspect ratio) settings | |
| 5 | Width settings | |
| 6 | Show log button | The enduser can still set a log file name on the settings tab, so you can implement logging in your app. |
| 7 | Terminal tab | Also controls relevant settings on the Settings tab. The terminal is by default hidden in the standalone Windows SimpleHMI. It can be made visible by the command-line/shortcut switch |
The following program produces a SimpleHMI screen that can be used to control the visibility of all controllable items. In a practical application you would most likely just send a fixed pattern to the SimpleHMI when you draw the initial screen.
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;========= Test enables in standalone sHMI =========================
# Open_Serial User(38400,8,N)
GoSub HMI_Connect
# HMI ConnectEvent(HMI_Connect)
RunTasksForever
;ON connecting to SimpleHMI, force the screen to a known width
HMI_Connect:
# HMI Reset() Cls() HideAllButtons() ScreenWidthEvent(40,evScreenWidth)
Return
;Once the SimpleHMI acknowledges the screen width, draw the buttons.
evScreenWidth:
# HMI Cursor(1, C-10) Print("Test control enables")
# HMI ButtonEvent(, 0.2, 0.1, 0.1, 0.3, "Connect", evConnect)
# HMI ButtonEvent(, 0.2, 0.6, 0.1, 0.3, "Reset", evReset)
# HMI ButtonEvent(, 0.4, 0.1, 0.1, 0.3, "Cls", evCls)
# HMI ButtonEvent(, 0.4, 0.6, 0.1, 0.3, "Ruler", evRuler)
# HMI ButtonEvent(, 0.6, 0.1, 0.1, 0.3, "A/R", evAspect)
# HMI ButtonEvent(, 0.6, 0.6, 0.1, 0.3, "Width", evWidth)
# HMI ButtonEvent(, 0.8, 0.1, 0.1, 0.3, "Show log", evShowLog)
# HMI ButtonEvent(, 0.8, 0.6, 0.1, 0.3, "Terminal", evTerminal)
;Controlling enables. One semaphore byte
bEnables defBYTE
;Define the enable semaphore bits
sConnect EQU 0
sReset EQU 1
sCls EQU 2
sRuler EQU 3
sAspect EQU 4
sWidth EQU 5
sShowLog EQU 6
sTerminal EQU 7
;Event handlers for each of th enable buttons.
evConnect: LoadI sConnect
GoTo ToggleEnable
evReset: LoadI sReset
GoTo ToggleEnable
evCls: LoadI sCls
GoTo ToggleEnable
evRuler: LoadI sRuler
GoTo ToggleEnable
evAspect: LoadI sAspect
GoTo ToggleEnable
evWidth: LoadI sWidth
GoTo ToggleEnable
evShowLog: LoadI sShowLog
GoTo ToggleEnable
evTerminal: LoadI sTerminal
GoTo ToggleEnable
ToggleEnable:
IasJ:RecallS 0,bEnables
Not
IasJ:StoreS 0,bEnables
# HMI Enables(bEnables) ;Send enables mask to SimpleHMI
Return
The Enables hash function is intended for use in cases where the standalone SimpleHMI for Windows is to be used by an enduser. It also works in the SPLat/PC version.
In the SPLat/PC version, you can restore the default settings by holding down SHIFT and clicking the blue SimpleHMI title bar.