Stephen Wille Padnos wrote: > 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
Hi Steve That's exactly what I was looking for. It works perfect for me, right now. On the other side, the "or" suggestion from John looks good, too. But I could not get it working till now :-( John, do you have a real live example for me? Thanks and Regards, Thomas ------------------------------------------------------------------------------ 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
