Thomas Kaiser wrote: >Hello All > >I would like to override (force) the input of the home switches for testing. > >I created a "checkbutton" vcp component which should overwrite the >"both-home-x/y" signal: > ><checkbutton> > <halpin>"x-axis-home-force"</halpin> ></checkbutton> > >In the postgui.hal: >linksp both-home-x pyvcp.x-axis-home-force > >But this does not work. Is it possible to override (force) a input with >a vcp checkbutton? If possible, how do I have to do it? > > It is possible, but not the way you did it (as you noticed :) ).
You probably got an error that said something like "signal both-home-x already has a writer". This is because you can only have one pin per signal that writes to the signal. How you should go about this depends on what you're trying to do. You said testing, so I'll assume you won't want to keep this setup - that you're using a vcp panel to emulate the machine while making your configuration. This is the simpler of the methods anyway. If you're using stepconf make sure to leave a parallel port pin set as your X home/limit input, otherwise the both-home-x signal won't be written to the .hal file. All you need to do is disconnect the parallel port pin from that signal somewhere above the line you already have. Here's what you do if you used parallel port pin 1: unlinkp parport.0.pin-01-in # use -in-not if you have the "invert" checkbox checked linksp both-home-x pyvcp.x-axis-home-force This method has the advantage of disappearing when you (a) uncheck the "use a custom HAL file" or (b) remove the associated lines from custom.hal. - Steve ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
