Request for Community Feedback on g-code++ (sterp) Integration with LinuxCNC

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smv
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07 Aug 2025 06:52 #332989 by smv

Request for Community Feedback on g-code++ (sterp) Integration with LinuxCNC was created by smv

Hi everyone! I’ve recently been working on integrating g-code++ (a lightweight g-code interpreter inspired by the rs274ngc NIST g-code specification) into the LinuxCNC ecosystem. Before I submit a pull request, I’d like to get some community feedback so as to ensure that it fits well and is aligned with the project's direction.

Link to my original repo: github.com/s-mv/gcode-plus-plus
Link to the LinuxCNC fork: github.com/s-mv/linuxcnc/tree/s-mv/sterp (s-mv/sterp branch)
Demo video:

What I’ve Done

Integrated g-code++ into the LinuxCNC environment.
Verified it works for 3-axis machines on LinuxCNC.
Documented the integration process and architecture.
Set up an ANTLR4-based parser for g-code interpretation.

Key features

Control flow: Support for
```
while
```
loops,
```
for
```
loops,
```
if
```
statements, imports,
```
continue
```
, and
```
break.
```
g-code compatibility: Supports standard G-codes like G0, G1, G2, G3, G20, G21, G54, M3, M4, etc.

Feedback would be greatly appreciated, especially from people who have experience using g-code interpreters with LinuxCNC or have experience maintaining/debugging the project. Eager to make this integration as frictionless as possible so that it meets the needs of the community. Thanks in advance, and I’m looking forward to hearing your thoughts!

Best regards,
s-mv (Shreerang Vaidya)

The following user(s) said Thank You: tommylight

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andypugh
Away
Moderator

08 Aug 2025 18:56 #333055 by andypugh

Replied by andypugh on topic Request for Community Feedback on g-code++ (sterp) Integration with LinuxCNC

Does this exist as an alternative plug-in interpreter for LinuxCNC?

LinuxCNC already supports this, though the only alternative that currently exists is called canterp and just passes canonincal commands straight through.

I don't know how much traction you will get with a new G-code dialect, not even well-supported alternatives to G-code like STEP-NC have made much of a dent.

If it's a plug-in interpreter for existing LinuxCNC then I would support it's inclusion in principle.

Are you committed to supporting it for the next 20 years or so?

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