Input an external couple of x-y in GCode

gfxx wrote:

I Define custom M100 code. -> M100 launch mypythonprogram.py
(mypitonprogram.py bringh a couple of coordinates from vision system and rewrite a custom gcode mysubroutines.ngc files)

I am not clear quite what you are trying to do. But something like this in the actual python routine might work:
Here are the docs for the Python interface. I think this is what you have been missing

linuxcnc.org/docs/html/common/python-interface.html

gfxx wrote:

@all there is no way to have the same but in c/c++??.

You can do more in C / C++ than in Python, as LinuxCNC is largely written in C and C++. The C++ parts tend to look a lot more like FORTRAN++ though, I don't think that the guys who wrote NML really understood OO.

I think you would need to issue NML commands into the queue. The python interface I linked to the docs of is written in C++, you could just copy that.

git.linuxcnc.org/gitweb?p=linuxcnc.git;a...9004a65b9e9ee5b8f1ae

(No, I don't understand that code, and can't help)

gfxx wrote:

in some parte of this forum I read the NML will be complitely rewrite .... si a correct information?

The chaps working on Machinekit are looking to replace NML (and are quite well advanced down that track). However I don't see a mechanism for that change to get into LinuxCNC.