sync/async GPIB commands?

[Paul F. Prew]

Whay are there no synchronous/asychronous flavours of GPIB 488.2
commands like the traditional GPIB commands?
~paul prew

[Brian H. Powell]

"Paul F. Prew" wrote...
> Whay are there no synchronous/asychronous flavours of GPIB 488.2
> commands like the traditional GPIB commands?

It's because the C API in NI-488.2 (aka, the NI GPIB driver) doesn't
offer an asynchronous interface; the GPIB command is always done
synchronously in the driver. The "traditional" GPIB C API has functions
like "ibrda()" and "ibwrta()" which we call from LabVIEW to do asynchronous
I/O.
The asynchronous driver calls became less important when LabVIEW became
multithreaded. Do you have a particular application in mind for
asynchronous 488.2 functions?


Brian