LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

by the way, if you were wondering why there are such strange pin names at the top of the quadencoder:

these are 'virtual' pins that are created when an expansion plugin is loaded:

the expansion pins can be used in the same way as real pins in the configuration, except that they are limited to one direction.

Otherwise you can use them in pretty much any other plugin
even PWM or stepper if they don't need to be ultra fast

I was shy to ask where those shift arrays came from. So glad you've explained.

I hope for lightnings, thunder, heavy rain and a dozen typhoons all of Sunday. I'll cave under and get it done. Thanks a-mil again Oliver.

Happy Sunday, everyone! 

Got my MPG functional in RIO. Everything works; encoder counts, selection knobs, led, fairly happy about that. Not entirely sure what else I need on that motion control board, probably nothing. And so time to finalize the routing and send out a prototype PCB to test with!! Not that the breadboard set-up doesn't work, it's just a hazardous messland all over my benchtop // flying wires much lol \\

Additionally. If you are designing a Motion Control Board and want to ensure 110% isolation between the domains, the "go-to" part is the ISO7760DBQR (imho). Tested that all of today. Will endure a lightning, two typhoons, and a russian EMP bomb (granted all that are tiny!!). Others; the part's INs/OUTs are HIGH impedance and so no need to pollute the entire board with pullup resistors. 5V-to-3V3 translation at 25Mhz == PASS. Solid square wave with little to no under/overshoot.

The ISO7760 part was specifically engineered for system automation and motor controls, therefore you can officially ditch those half-useless ancient and medieval 'optocouplers'

e.g. 

Mecanix wrote:

Happy Sunday, everyone! 

Got my MPG functional in RIO. Everything works; encoder counts, selection knobs, led, fairly happy about that. Not entirely sure what else I need on that motion control board, probably nothing.
...
 

cool, did you change anything in the hal for this, or did everything work via config ?
if you had to do something to the hal please let me know, then I'll see how I can integrate it


I wasn't completely idle today either

very experimental and only of limited use,
but this example works:

You'll have to find out for yourself what's so special about it,
I only say HAL of hell
 

did i already mention that i have a script to visualise the HAL ?