Is it possible to add an item to a FPGA I/O Node after compilation?

[JacobFontaine]

Hi,

In short, I have a set number of captor on a physical structure, which are regrouped in a FPGA I/O Node in my VI. A website is communicating by websocket to my VI, and a user can change some configuration. In  the future, more captors will need to be added or removed.

Will it be possible for the user to add/remove a captor from the website? Right now I don't see a solution that doesn't requires the user to open the VI, manually add the captor, than recompile. Can a FPGA I/O Node change size after compilation?

Thank you very much

[GerdW · Accepted solution]

Hi Jacob,

you cannot change the FPGA VI code without recompiling…

[JacobFontaine]

Thank you for your anwser.

Generally speaking, is there anything that can be dynamically changed at runtime? Like having a generic I/O item transform to a user-generated one?

Thanks

[RavensFan]

What does "captor" mean in your first message?

And what do you mean by "generic I/O item" vs. "user-generated"?

What you need to do is make your FPGA code read as many channels as you ever expect to read.  So 8 spots, if you have an 8-channel module.  Then dynamically you can decide how many of those 8 you want to use.  So if you choose 3, then you work with the data from those 3 and just ignore the data from the remaining 5.

[Terry_ALE]

The new Ultrascale based FlexRIO have dynamic IO source and destination are designated and then assigned at runtime.

Otherwise things can be done to give the impression that things are dynamic but as the above comments state FPGAs are generally not dynamic. 

[JacobFontaine]

That's what i thought. My problem was that my project was suppose to be usable for multiple users, whom can have a different number of accelerator (the i/o nodes in my case) depending on the situation. But I'll just create the maximum number of channels, and then dynamically decide how many to use depending on the specific user.

Thank you.