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From Friday, April 19th (11:00 PM CDT) through Saturday, April 20th (2:00 PM CDT), 2024, ni.com will undergo system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
06-28-2013 09:55 AM
Hi, I have wire to an "Invoke Method" block, but I'm getting the following error shown in the picture.
I was wondering how I can solve it.
Solved! Go to Solution.
06-28-2013 10:45 AM
Data probably isn't a valid DMA FIFO. It needs to be a Target to Host DMA FIFO.
Can you zip up your project and post it? That would be easier to debug.
06-28-2013 12:31 PM
Sure, please find attached my project files.
Sorry, I couldn't make a ziped file as I got a corrupted file massage!
06-28-2013 01:08 PM
Yep, you don't have a DMA FIFO in your FPGA target. So trying to read a FIFO called Data that doesn't exist will cuase this problem.
06-28-2013 06:52 PM
Nice help. I'll try to solve the problem. I'll ask if I run into a problem in defining the DMA FIFO.
07-01-2013 09:54 AM
Hi, the following picture shows a block in the FPGA target code.
The documentation of that block says "6. Write the measured data to the DMA FIFO."
I was wondering why this DMA FIFO is not working and how I can define the appropriate DMA FIFO in the FPGA target.
07-01-2013 10:23 AM
I created a DMA FIFO in the project as shown in the following figure.
Now I'm going to check if it solves the problem.
07-01-2013 10:30 AM
If you haven't created a FIFO yet, right-click on your FPGA target and select New->FIFO. If you have the FIFO created, you can double-click it in the project window to open the properties dialog.
07-01-2013 10:33 AM
After creating a DMA FIFO in the project explorer, now the problem is solved and the wires are not broken as shown in the following window.