Clock Edge Interrupt Function (?)

[VincentTang]

Hello Labwindows community, 

Currently using Labwindows CVI 2012. 

I wanted to see if there was a function, in particular with the NI-DAQmx library (but not limited to), that allows for the detecting of the falling or rising edges of a pulse that occurs in microseconds. Is there an interrupt function or something similar that I can use to detect this and if the event occurs, to call a callback function?

Thanks,

Vincent

[CVI-User]

Did you try Help >> Find Examples... ?

Maybe ReadDigChan-ChangeDetectionEvent.prj could be a starting point.

(Just guessing, I never used such a function.)

[francine.p]

^ that example should show what you're trying to do.

Also, make sure your hardware is supported by change detection. You can take a look at this document to check:

Digital Change Detection in NI-DAQmx

[VincentTang]

Thank you for the response CVI-User and francine.p. 

I took a look into the project description for the ChangeDetection.prj and noted that it wasn't something I was looking for. My project ran out of room for additional digital input signals. I wanted to see if there was a way we can measure the event change with a digital output signal, but scrolling through the functions, it seems limited to digital inputs only. 

Thank you both for the feedback, I think I can use those resources to research further. 

Regards,

Vincent