Read input go to subroutine

Hi Guys,

I am setting up an automation cell with my CNC lathe. I am creating a separate HMI unit, probably with a raspberry pi or beaglebone black, the specifics have yet to be determined. What I would like to do is send an output from the HMI unit and read it from linuxcnc. There will be many different subroutines for all the different parts, upwards of 30 different subroutines. I was thinking of a serial connection or ethernet, something that will send a binary number that I can read and call the subroutines based on the number it reads. I am not the strongest programmer, but I have used subroutines before, calling them in and out of program. But I am not sure how to read an input and based on that input jump to a specific subroutine. I am in the development of the cell, so hardware and connections can be anything at this point, but I am mainly interested in the input reading and mapping that to a subroutine, without having 30+ connections for each subroutine.

Thanks,

Or write a python comp and start from there different files,
Qick and easy:-)

Norbert

I was thinking of using 5 input lines and using them as binary code, so I don't need 32 individual inputs. However if I do that, I think the code will be really messy, because i think I will have a lot of if statements for every case. As far as the python comp, is there a good source or examples for how to set something like that up? I am not the best programmer, so seeing examples helps a lot. LinuxCNCCrash looks like a great option to feed it text based files, would be an easier way to run it. Can you run crash alongside AXIS or some other visual display of what the machine is doing?

Python user Components

Norbert