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

meister
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29 Jul 2025 06:01 #332507 by meister

Replied by meister on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

@Russell should work, but modbus is very very slow, so not usable for things like servo motors.

@mBender:

you can overwrite all ini parameters in the json config and also add MDI commands:

    "linuxcnc": {
        "gui": "axis",
        "ini": {
            "HALUI": {
                "MDI_COMMAND|Go To Zero": "G0 X0 Y0",
                "MDI_COMMAND||Gripper|0": "M68 E0 Q-100",
                "MDI_COMMAND||Gripper|25": "M68 E0 Q-75",
                "MDI_COMMAND||Gripper|50": "M68 E0 Q0",
                "MDI_COMMAND||Gripper|75": "M68 E0 Q75",
                "MDI_COMMAND||Gripper|100": "M68 E0 Q100"
            },
            "DISPLAY": {
                "MAX_LINEAR_VELOCITY": 60.0,
                "MAX_ANGULAR_VELOCITY": 60.0
            }
        },

you can also add your own .hal file to postgui_call_list.hal (this entry will not be overwritten)

# cat Output/TangNano9K/LinuxCNC/postgui_call_list.hal

source custom_postgui.hal
source my-own.hal

about the laptop/PC, try to reinstall the rio.c component:

sudo halcompile --install riocore/files/rio.c

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meister
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29 Jul 2025 06:03 #332508 by meister

Replied by meister on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

you can also set the ini defaults in the setup gui:

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epineh
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29 Jul 2025 11:22 #332516 by epineh

Replied by epineh on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

Yep cool, I am thinking of things like feedrate override, jog speed, rapid override etc nothing "realtime". We have noticed Modbus is slow with general IO, horses for courses I guess.

I've had more electronic parts turn up today so I plan to get busy on the weekend and start testing Riosub over the next few weeks. I've got 4 and 6 axis closed loop controller boards ready to test, both with dual Modbus connections and shift register out, so I can trial multiple combinations... will keep you posted.

Cheers,
Russell.

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meister
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29 Jul 2025 12:48 #332518 by meister

Replied by meister on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

for the overwrite stuff i prefer encdoders:

www.youtube.com/shorts/jnna9jJnXfs

Modbus speed test:
www.youtube.com/shorts/ZcQjW4829R0

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mBender
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08 Aug 2025 01:12 - 08 Aug 2025 01:17 #333026 by mBender

Replied by mBender on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

[code]about the laptop/PC, try to reinstall the rio.c component:

[code]sudo halcompile --install riocore/files/rio.c

[/code][/code]

It worked, problem was on the hadrware side. Another USB Hub did the trick.

Last edit: 08 Aug 2025 01:17 by mBender.

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probotix
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10 Aug 2025 18:14 - 10 Aug 2025 18:15 #333179 by probotix

Replied by probotix on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

@mBender
Where you at in Florida? How can I contact you?

JCLPCB delivered my self made PCB board. Testing ongoing. I had to order 5 boards. If anyone is interested in one, I have a few spares. Located in the Florida USA.

Last edit: 10 Aug 2025 18:15 by probotix.

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mBender
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11 Aug 2025 09:18 #333205 by mBender

Replied by mBender on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

I guess the easiest is find me on Facebook. Mike Bender, I'm in St Lucie County,but can ship everywhere.

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epineh
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15 Aug 2025 02:59 - 15 Aug 2025 03:01 #333449 by epineh

Replied by epineh on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

Just wondering if the existing tang primer 20K plugin will work for the tang primer 20k Lite board? It is a simpler board than the dev board and has 117 available IO. It's not a great deal more expensive than the nano9k.

Last edit: 15 Aug 2025 03:01 by epineh.

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meister
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15 Aug 2025 05:45 #333452 by meister

Replied by meister on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

> Just wondering if the existing tang primer 20K plugin will work for the tang primer 20k Lite board?

works !

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epineh
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15 Aug 2025 13:57 - 15 Aug 2025 22:28 #333467 by epineh

Replied by epineh on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

I am going to see what we can squeeze out of the Nano9K for now, but its nice to know we can use something with a lot of direct IO in the future if needed. That 20K Lite board is a pretty solid option.

Cheers.
Russell.

Last edit: 15 Aug 2025 22:28 by epineh.

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

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