selective arrays

[willist2]

Currently i am using 8 toggle switches to simulate 8 bits, which are going into an array and are being displayed as a binary number. I would like to have the option to have all the bits on, or all the bits off, or for the user to select specific bits? has anyone got any ideas on how to do this? thanks

[TiTou]

Hello,

Does the attached VI do what you were asking for ?

Feel free to tell me if I am missing the point...

[Stuart_R]

Nice solution. Adding to that, in LV8 you have the ability to use front panel object short-cut menus, so you could if you really wanted to, implement the code so that you get the option of setting all high or all low, by right-clicking on the array object and making the relevant menu selection. This would at least remove the need for the two additional booleans but could be slight over-kill for your app 🙂

[TiTou]

hmmmm... I didn't know that... someday I should upgrade to LV8, I keep reading posts with "LV8 can do this easier..." or "LV8 has this built in"...

[Stuart_R]

Yeah, there are some really good features. You could also build this into an XControl, and the block diagram would only look like a standard icon, hiding the lower level code. In fact, that gives me an idea, if I get time, I'll post an example of this, but you know what its like trying to find a little bit of time to play around with some code 🙂

[willist2]

thanks a lot guys, unfortunately my uni is too tight to pay for labview 8, but i will try the Vi u suggested. cheers

[willist2]

Hi, the vi you suggested is just what I was looking for. I didnt even think about using event loops! I am having trouble indicating that the bits are on/high with LED's however. Do you know how i could do this?

thanks again!

tom

[TiTou]

Hi tom,

I'm sorry I don't understand what you mean by :

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 I am having trouble indicating that the bits are on/high with LED's however. Do you know how i could do this?

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Tell me if the attached vi does what you are asking for...

[willist2]

Sorry i wasnt being clear. When bit 1 is switched on, I'd like an LED to indicate that it is on. The same for the whole port of 8 bits. I was having troube doing this with the event cases.

thanks

[TiTou]

Well this is what I assumed... and the last vi I sent is doing this, no  ?