Pci card fo Linuxcnc

Do you have the card?
if yes, insert it in the PC, boot a Live Linux session from USB and type:It does return a lot of text, but try to find the section with that cards info.
Also search for firmware for it, a lot of Chinese companies have firmware on the net to avoid lawsuits.

As i said above, many of them have everything on the net, so:
www.wch.cn/products/CH367.html
At the very end there are Linux drivers, and everything else in between.

It's probably relatively easy to write a LinuxCNC driver for these boards if the documentation is adequate.

vas455 wrote:

relatively speaking, I will need to write a driver to specify the ports of the card in Linuxcnc?
 

Yes. But it's not particularly difficult. 
Here is an example:
github.com/LinuxCNC/linuxcnc/blob/master.../drivers/pcl720.comp
It's for an ISA card, and the starting point is an ioaddr. But i chose it as it uses the .comp preprocessing language so it's relatively simple. 

For a PCI device it is usual to use DMA, so after a bit of setup you just need to put the data into variables that are part of a correctly-shaped C struct. 
I think that the memory mapping happens here, in the Motenc driver: github.com/LinuxCNC/linuxcnc/blob/master...rs/hal_motenc.c#L309