Junction MESA with free programming and Matlab

All of the Mesa manuals and firmware source code is available on their web site.

www.mesanet.com/

John

Ok, thanks for that. A little I've understood.
For example manual for 5i25, page 13, I must get, how to interface SPI port from my program, and it will reach what I need.

"DATA REGISTER at offset 0x74 from 5I25 base address" means,
that if adress of 5i25 base is 0x12( for example), that
D0 register will be at 0x74+0x12= 0x86 adress?

Yes, as you can see in the hm2_pci driver.
github.com/LinuxCNC/linuxcnc/blob/master...a-hostmot2/hm2_pci.c

I've read that program, but it still black hole for me, how to use it I don't wonder.
may be it's better for me not to dive into such deeps as such programing(((

I wrote many of the Mesa drivers, and knew nothing about embedded programming when I started. I didn't even know C.

So, if you want a project, you probably can do it. But it might take time.