FPGA Read/Write not working in cRIO 9073

[mukunda.mj]

Hi.

  I am stuck with a problem in using FPGA Read/Write control please suggest a solution.

  I am using cRIO 9073 and I am trying to pass an ON/OFF control from GUI -> RT Host -> FPGA. I am using a Network shared variable to pass the control form GUI to RT host and I am using Read/Write control to pass it to FPGA. I have also put a boolean indicator in the FPGA VI to monitor if the control is passing to FPGA.

  When I toggle the button in GUI I can see the same change in the RT host (Shown as probe 16 in the 1st attachment). However the FPGA indicator (Shown as probe 19) always remains at default false state. The FPGA VI is put as 2nd attachment.

Thanks

Mukunda

[crossrulz · Accepted solution]

Your FPGA only reads the control once before going into the loop.  If you want it to continuously read the control, you need to put it inside of the loop.