How to use delay using boolean inputs
dear sir
I have created a AND logic where when both inputs are high using boolean switches output should become high green led should glow after 5seconds and other than it output should be false red led will glow. basically I want to use delay function .I am attaching file
thanking you
regards
kn
Solved!
Go to Solution.
Attachments:
try1.vi 8 KB
try.vi 38 KB
kavharshre wrote:
sir I am attaching the solution for boolean.Any improvements or suggestions.
First of all, your front panel and diagram are way too big for this VI. Resize them to a reasonable size.
As already mentioned, that "AND TRUE" is just silly.
The upper boolean output of the inner loop is the same for both cases, thus it does not belong in the inner case structure at all.
All you need is a single TRUE diagram constant. Configure the output tunnels to "use default if unwired".
Try to keep your wires straight.
Avoid crossing wires unless necessary
Change the labels of your controls and indicators to something logical and intuitive. Self-documenting!
Here's a literal rewrite.
LabVIEW Champion . Do more with less code and in less time .
Attachments:
try3MOD.vi 8 KB
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currentState = "SHIFTED" else currentState = "PRIMARY";
protected function tab_clickHandler(event:MouseEvent):void
this[inpText].text = this[inpText].text+" ";
protected function shift_clickHandler(event:MouseEvent):void
shiftState = !shiftState;
if (shiftState == true)
currentState = "SHIFTED" else currentState = "PRIMARY";
protected function enter_clickHandler(event:MouseEvent):void
this[inpText].text = this[inpText].text+"\n";
protected function backspace_clickHandler(event:MouseEvent):void
var tmpStr:String = this[inpText].text;
this[inpText].text = tmpStr.substr(0,tmpStr.length-1);
protected function application1_creationCompleteHandler(event:FlexEvent):void
inp1.setFocus();
protected function focus_enterHandler(event:MouseEvent):void
inpText = event.currentTarget.id;
]]>
</fx:Script>
<s:states>
<s:State name="PRIMARY"/>
<s:State name="SHIFTED"/>
</s:states>
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<s:TextInput id="inp1" y="36" width="151" horizontalCenter="0" click="focus_enterHandler(event)" y.PRIMARY="239" horizontalCenter.PRIMARY="42" width.PRIMARY="199" height.PRIMARY="31"/>
<s:Group id="keyboard" width="661" height="184" horizontalCenter="0" y="300" focusEnabled="false">
<s:Button x="5" y="5" label="~" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="`"/>
<s:Button x="49" y="5" label="!" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="1"/>
<s:Button x="93" y="5" label="@" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="2"/>
<s:Button x="137" y="5" label="#" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="3"/>
<s:Button x="181" y="5" label="$" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="4"/>
<s:Button x="225" y="5" label="%" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="5"/>
<s:Button x="269" y="5" label="^" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="6"/>
<s:Button x="313" y="5" label="&" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="7"/>
<s:Button x="357" y="5" label="*" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="8"/>
<s:Button x="401" y="5" label="(" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="9"/>
<s:Button x="445" y="5" label=")" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="0"/>
<s:Button x="489" y="5" label="_" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="-"/>
<s:Button x="533" y="5" label="+" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="="/>
<s:Button x="577" y="5" label="Backspace" height="43" width="80" fontSize="11" fontWeight="bold" click="backspace_clickHandler(event)"/>
<s:Button x="5" y="48" label="Tab" height="43" width="67" fontSize="12" fontWeight="bold" click="tab_clickHandler(event)"/>
<s:Button x="72" y="48" label="Q" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="q"/>
<s:Button x="116" y="48" label="W" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="w"/>
<s:Button x="160" y="48" label="E" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="e"/>
<s:Button x="204" y="48" label="R" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="r"/>
<s:Button x="248" y="48" label="T" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="t"/>
<s:Button x="292" y="48" label="Y" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="y"/>
<s:Button x="336" y="48" label="U" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="u"/>
<s:Button x="380" y="48" label="I" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="i"/>
<s:Button x="424" y="48" label="O" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="o"/>
<s:Button x="468" y="48" label="P" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="p"/>
<s:Button x="512" y="48" label="{" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="["/>
<s:Button x="556" y="48" label="}" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="]"/>
<s:Button x="600" y="48" label="|" height="43" width="57" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="\"/>
<s:Button x="5" y="91" label="CapsLock" height="43" width="80" fontSize="12" fontWeight="bold" click="caps_clickHandler(event)"/>
<s:Button x="85" y="91" label="A" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="a"/>
<s:Button x="129" y="91" label="S" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="s"/>
<s:Button x="173" y="91" label="D" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="d"/>
<s:Button x="217" y="91" label="F" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="f"/>
<s:Button x="261" y="91" label="G" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="g"/>
<s:Button x="305" y="91" label="H" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="h"/>
<s:Button x="349" y="91" label="J" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="j"/>
<s:Button x="393" y="91" label="K" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="k"/>
<s:Button x="437" y="91" label="L" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="l"/>
<s:Button x="481" y="91" label=":" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY=";"/>
<s:Button x="525" y="91" label=""" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="'"/>
<s:Button x="569" y="91" label="Enter" height="43" width="88" fontSize="24" fontWeight="bold" click="enter_clickHandler(event)"/>
<s:Button x="5" y="134" label="Shift" height="43" width="106" fontSize="24" fontWeight="bold" click="shift_clickHandler(event)"/>
<s:Button x="111" y="134" label="Z" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="z"/>
<s:Button x="155" y="134" label="X" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="x"/>
<s:Button x="199" y="134" label="C" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="c"/>
<s:Button x="243" y="134" label="V" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="v"/>
<s:Button x="287" y="134" label="B" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="b"/>
<s:Button x="331" y="134" label="N" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="n"/>
<s:Button x="375" y="134" label="M" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="m"/>
<s:Button x="419" y="134" label="<" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY=","/>
<s:Button x="463" y="134" label=">" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="."/>
<s:Button x="507" y="134" label="?" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="/"/>
<s:Button x="551" y="134" label="Shift" height="43" width="106" fontSize="24" fontWeight="bold" click="shift_clickHandler(event)"/>
</s:Group>
</s:Application>
thanks in advance,
saran r -
How can i measure the time between two successive rising edges ,using digital input ..
Hello
I'm trying to measure the time in seconds between each two successive rising edges on a digital input .
Till now I have managed to detect the rising edge ,increment a counter with each rising edge ,and snap the time at which the rising edge happenned
all I need now is to subtract the current rising edge time from the previous rising edge time in order to calculate (T) which can be 1/frequency and display it in realtime to the user.
but I don't know how to do this
Can somebody please help me !!!
note: the time that I'm measuring ranges between 200 ms - 2 seconds
Solved!
Go to Solution.
Attachments:
Counter without time.vi 11 KBCheers for that. It's always a good idea to post your SubVIs as well - the problem could be in one of those.
To help you out:
You already know how to use shift registers so why not use one again for time? Create a new shift register for the time then simply compare the "rising edge time" to the the previous time stored in the shift register and then write the new time to the shift register.
Just a few other pointers:
1. You'll want to initialise your shift registers ie wire a constant to the left hand register outside of the loop. This will cause the register to be reset each time the program is run. This is so that your counter will start from zero each time you run your code.
2. You don't need to use the "greater than?" compare function with boolean as they can only be true or false (1 or 0)! The "Equal?" function is what you should use here.
3. Lastly, it's a small thing but you can use the same tunnel that feeds into a case structure in each of the cases - no need to create two tunnels for the true and false cases, use the same one.
-CC
"If anyone needs me, I'll be in the Angry Dome!"
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