Basic LPT pins direction by script

• There is 12 output pins in the LPT port.
• We can use 12 characters to specify required combination of output states.
• WndLpt allows regularly set a combination of LPT port digital output signals in strict accordance with the script commands.
• See also "Extended LPT pins direction".

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If we need set all 12 LPT outputs to HIGH state (3..5 V) - we must specify this command:

111111111111 ; Turn ON all 12 LEDs

If we connect 12 LEDs to the LPT output pins, we can see such view:
If we need reset all 12 LPT outputs to LOW state (0 V) - we must specify this command:

000000000000 ; Turn OFF all 12 LEDs

Then we get next view on the 12 LEDs panel:

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Now, if we need that all the LEDs are twinkle:

CYCLE:        ; Define the Label named as "CYCLE"
111111111111  ; Turn ON all 12 LEDs
000000000000  ; Turn OFF all 12 LEDs
goto CYCLE    ; Goto the "CYCLE" Label (Infinite cycle)

Then, we save this sctipt to the file "script.txt" and "Drag and Drop" it to the WndLpt window. Now we get twinkles of LEDs:

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What? Is it flashing too quickly?

sleeps 500    ; Specify regular pause between steps (pause = 500 ms)
CYCLE:        ; Define the Label named as "CYCLE"
111111111111  ; Turn ON all 12 LEDs
000000000000  ; Turn OFF all 12 LEDs
goto CYCLE    ; Goto the "CYCLE" Label (Infinite cycle)

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Fine. Let's try a more complex script.

sleeps 500    ; Specify regular pause between steps (pause = 500 ms)
CYCLE:        ; Define the Label named as "CYCLE"
100000000000  ; Engage only LED №1
010000000000  ; Engage only LED №2
001000000000  ; Engage only LED №3
000100000000  ; Engage only LED №4
goto CYCLE    ; Goto the "CYCLE" Label (Infinite cycle)

See:

The end.

See also "Extended LPT pins direction".