Carved frame. Camera Basler with FPGA

Hello!

I use a 340kc of acA2000 of Basler camera controlled by an FPGA PCIe-1473R.

After a few adventures, I finally changed and changed the configuration of TAP with this post.

http://digital.NI.com/public.nsf/allkb/EA1727D8D620B81F8625797B0072257C

With just the change in the FPGA, the camera works and takes pictures successful, however the framework is divided into four images (all identical but light intensity).

When I also change the host code, only an image appears in the frame, but certainly not a good image, as previously.

Someone knows why maybe this problem happening?

Thanks for your help.

I think I knew what is happening. I believe that section of the knowledge base that you read is incorrect. We will solve the problem together and I'll correct the article if necessary.

Let's talk for a little bit of what's going on. The two keys are 10 bits each, but they are stored in the 16-bit data type. The two pixels must collect the FPGA to the host with a DMA FIFO. For more convenience, the code uses a single DMA FIFO even if there are two taps. The article suggests that you must combine numbers 16 bits 2-in-1 32-bit number and then send it in the DMA FIFO. There are a few problems with this: first, the DMA FIFO has been configured for 16-bit, so half the data is being deleted. In addition, the code on the host computer is dividing the 16-bit data in 8-bit, which is not correct.

I think it would be better to change the DMA FIFO to support 32-bit data. You can do this by opening the LabVIEW project and right click on the host 16 DMA, select Properties, and then change the type of data in U32. After that, you must program the code on the host computer to divide the number. You will get then two tables (one for each). I think it will reconstruct the image correctly if Interleave you just these two tables.

I have attached a few images. Try it and tell me if this works. If so, I will update the documentation.

Jeremy P.

Tags: NI Hardware

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