several host vi called the same FPGA vi

[k.nadia]

Hi,

Is anyone has an exemple of Labview project where there is several host vis calling the same FPGA vi.

Thank u in advance

Best regards

Nadia

[GerdW]

Hi Nadia,

you can wire the FPGA reference you get from FPGAStart to several (sub)VIs - what exactly is your problem?

[k.nadia]

I want each host VI to use FPGA VI just when it's needed

My FGPA runs all the time even when some indicators aren't used

[Jun']

Hi Nadia,

I also believe that you need more specific. Can you post a simple project that uses 2 hosts calling the same FPGA and explain us clearly what situation is not working as you would like?

Thanks,

M-Junior

[k.nadia]

Hi ,

I have enclosed an example

I would like that the first loup in my fpga runs only when the first host VI si runing

I hope I was clear

Thanking u in advance for ur responses

My best regards

Nadia

[crossrulz]

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@k.nadia wrote:

I would like that the first loup in my fpga runs only when the first host VI si runing

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Why?  What harm is it doing by running?  It isn't like it is using any CPU time since this is inside of hardware (the FPGA).

But you could just use another control and a case structure so that the contents of the loop only run when that control is enabled.

[k.nadia]

If you have notice I have two loops in my FPGA VI the first should be for my IN VI and second loop for the OUT VI. I would like to know how to do to make the first loop for example runs only if my IN VI does

[GerdW]

As Crossrulz said: make a control in the FPGA, that enables a Case structure to run the contents of the IN VI.

Your host IN VI enables the case structure when it starts, and disables it at stopping…

[crossrulz]

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@k.nadia wrote:

If you have notice I have two loops in my FPGA VI the first should be for my IN VI and second loop for the OUT VI. I would like to know how to do to make the first loop for example runs only if my IN VI does

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Again, for what reason?  Based on your example, I see nothing wrong with it running all the time.  If you are not writing to the controls, the outputs are not changed.

[k.nadia]

I'm agree with u crossrulz, but I would like to optimize my program coz I don't see why my loop should runs all the time