Good way to stop and run again a FPGA reference

Hi guys!

I have some problems when I try to stop, and then rerun an FPGA vi, I explain.

I have two DMA FIFO to send data to the FPGA of the CPU and the CPU for the FPGA. When it receives data, the FPGA treats them and sends them to the CPU, and according to the result of the CPU does something. For example, it can be turn on LEDs or to rotate a motor continuous.

But to do these actions, I have to use a "personality FPGA", i/o pins and LEDs appear to be managed by the FPGA core. So I have to close my reference vi FPGA in charge to receive data from the CPU, make my power on LED and then after raise again my FPGA VI once again, if I don't do LED blink or stay without effect rotation motor... But close and start again the FPGA VI creates problems when running, especially for the previous reading on the FIFO DMA awaiting... I tried to intercept errors on the FIFO to restart the FPGA VI with a good time but nothing... I am lost and I think Miss me something, concept, or something else.

I can't share my code because I work for a company, but I would like to know if you have VI with this type of structure: a FPGA reference that must be stopped to allow interaction of material with the FPGA default personality then run again, all with good timing...

I hope I'm clear, but if it is not the case, I can rephrase if necessary.

Thank you very much for the help!

Afghow.

I do not understand why you need to change the bit file is loaded in the FPGA.  Why you cannot add code that handles the inputs/outputs to your FPGA processing?  Why do you still need to send data to the host (CPU)?  Just having the process FPGA data and change the output directly.

Tags: NI Software

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