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Altera_Forum
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11 years ago

Communicating with PCIe card

Hi, I have an image loaded on a Stratix V FPGA which includes a PCIe core and DDR3 controller as an end point. The FPGA is of course on a PCIe card. I would like to write a C program which ru...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

There are lots of examples lurking.

Linux has a /dev entry for each BAR of every PCI slave, so it is as simple as identifying the correct entry, opening the device, and using read(), write() or mmap().

These transfers will be relatively slow because each memory access will be a separate PCIe transfer and they take a long time.

Fine for program load and debug, not really any use for transferring 'real' data.