The device used is the NI-6535 (PXIe).
As for the signals :
- ACK is the signal used when the DAQ is ready to pull data
- REQ is the signal used by an external device to request signal pulling
The 8255 handshake is described as the screenshots attached (As I am not really good at explaining).
I also tried doing it in daqmx however it still doesn't seem right to me...
Thanks for your attention 🙂
Your humble LabVIEW enthusiast
The basic *form* of your code looks about right in terms of how to configure a task to either control or react to PFI lines as part of its run-time behavior.
I can't comment on the full *content* as I haven't implemented handshake-based DIO tasks before and am not familiar with the conventions. I'm a little surprised that pretty much all the same properties are being set for the Input task as for the Output task. I'd have expected there to be more output-only or input-only properties to configure. But that's not really based on anything.
Hopefully someone else with more familiarity will join in...