Python Component issueing errors or warnings to LinuxCNC

We should create a NML message command for this purpose that can be send from python's linuxcnc module. I wonder how hard that would be.

Afaik it already exists, it's just not included in the python module.

What makes you say that?

There do seem to be messages:
github.com/LinuxCNC/linuxcnc/blob/2e75b0..._intf/emc_nml.hh#L33

And emcmodule seems to read them, but not write them?
github.com/LinuxCNC/linuxcnc/blob/2e75b0...s/emcmodule.cc#L1496

You can read the nml source. There are messages for error messages there. They are used internally by the application but are not included in the linuxcnc.command method for sending them on the command channel to the nml error channel. As Andy Pugh pointed out.

I haven't looked at the source enough to see if these would be difficult to implement or not. Or if they exist on the c++ api that's under the python one.

I don't know if its a very elegant way but, for my axis tabs I have created a hal pin only to print an error/warning using the "message" hal real time component.