Signaling a write to an FPGA VI using the driver development kit

[gtg811q]

We are developing a stepper motor control application that runs on a PXI-7811r and interfaces with a cPCI Linux controller using the FPGA C API. The C code won't be transfering data, only setting a few registers and polling some others. I'm curious to know if there is a signal that an FPGA vi can read to tell if a front panel control has been written to. I know we could see if the value has changed or use additional signals to "latch" data in a register, but I'm looking for something more along the lines of the following:

[PaulRB]

Hi,

Other than polling the value of the control, I am not aware of any built-in method to do this.