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

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2 years 3 months ago #306493 by Mecanix
Replied by Mecanix on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)
I don't know what to say, that was too kind Meister. Thank you so much for taking the time.

I'm working off a GW1N-LV9QN88 part (custom dev board). Schematic and pcb mostly inspired from the infamous TangNano9K and so I have a good feeling this won't be too difficult to port hardware-wise.

Let me set-up, clone, learn your work during the coming days. As soon as I have a successful IDE compile/project I'll share it with you to upload on your repo.

So excited about this already. Thank you again. I'll update progress!

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2 years 3 months ago #306495 by Mecanix
Replied by Mecanix on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)
First contrib; Feel free to replicate/publish/flame/others. Great liltle working-but-simple fpga dev board.
Schematic attached. 

[img

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2 years 3 months ago #306497 by meister
Replied by meister on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)
WOW 
[img
 very nice !!!
I recently tried to build a board with an ICE40UP5K, but I'm somehow too stupid to get it to work :( The FPGA chips are just too small for me to solder them by hand.

It would be cool to have a complete rio board without having to use a plug-on devboard .

I just saw that you use Windows, rio unfortunately only runs under linux, vm is also ok, if it works in WSL I can't say unfortunately

 

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2 years 3 months ago #306500 by Mecanix
Replied by Mecanix on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)
The EDA I'm forced to use at work is win11 based. I know I know...

However my entire dev environment aka compilers, IDEs, ect, are all Debian/linux based. No substitute ;)

If you aren't friend with fine pitch then avoid the LV9QN88 part. Not much better than the ICE40UP5K to say the least. I'm with you though, prefer their LQFP pinouts...

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2 years 3 months ago #306506 by meister
Replied by meister on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)
I built you a minimal config, could work like this, maybe I mixed up RX/TX, but it's a good start :)
Code:
odippel@odippel:/usr/src/riocore$ PYTHONPATH=. bin/rio-generator riocore/configs/TangNano9K/config-mecanix.json loading: riocore/configs/TangNano9K/config-mecanix.json loading board setup: TangNano9K writing gateware to: Output/Mecanix/Gateware !!! gateware changed: needs to be build and flash ||| loading toolchain gowin writing linuxcnc files to: Output/Mecanix/LinuxCNC odippel@odippel:/usr/src/riocore$ ls Output/Mecanix/Gateware/ blink.v      hash_new.txt  Makefile  pwmmod.v  rio.sdc  stepdir.v  uart_baud.v  uart_tx.v debouncer.v  impl          pins.cst  rio.gprj  rio.v    toggle.v   uart_rx.v    uart.v .... PYTHONPATH=. bin/rio-test riocore/configs/TangNano9K/config-mecanix.json /dev/ttyUSB0

 

Attachment not found


 

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2 years 2 months ago #306521 by meister
Replied by meister on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)
I'm sorry, I was a bit bored :)

 

Attachment not found



riocore/configs/MecanixDev/config-test.json
riocore/boards/MecanixDev/board.json

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2 years 2 months ago #306531 by Mecanix
Replied by Mecanix on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)
O M G. Wait, are you showing us that all what's missing to RIO to be fully functional is a fpga dev board and the toolchain installed? As in "screw Gowin IDE'??? If that's the case then that's a pretty serious game changer.

I have so much to learn about your solution, obviously. Excitement is getting outta control!!

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2 years 2 months ago #306545 by meister
Replied by meister on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)
I just wanted to show that it is not that difficult to support new boards.
It is a bit more complicated to create the board with a picture and the correct pin positions for the setup tool, but this is only optional.

If the toolchain is already supported, it is quite easy,
copy a similar one and adjust the values (type/clock-speed and pin).

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2 years 2 months ago #306548 by Mecanix
Replied by Mecanix on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

copy a similar one and adjust the values (type/clock-speed and pin).
One word, Oliver; EPIC.

Let me learn what you've done for yourself and all of us first. This will require time on my side, but will be worth it I have a feeling - "it works" (see visual)!! I'll update on progress and hopefully can contribute what was done at my end. Interim, let me know if you need the sources/gerber/bom/anything for the dev board in use. Better yet, let me know what else could potentially go on it to make it a "RIO-BOARD" (RTL8111H?!) and I'll see what I can do. 

[img

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2 years 2 months ago #306549 by Mecanix
Replied by Mecanix on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

I'm sorry, I was a bit bored :)
riocore/configs/MecanixDev/config-test.json
riocore/boards/MecanixDev/board.json
Stupid me... I could have cloned/checkout the 'dev' branch rather than main and use what you've done already.
Explains why I couldn't find it locally lol. Let's try that again. 

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