Kenneth Lerman wrote: >Stephen Wille Padnos wrote: > > >>Kenneth Lerman wrote: >> >> >>>Here is my first guess at how I would do this: >>> >>>1 -- First, I would "enhance" emc to support a new M code that took at >>>least four arguments and returned at least one variable. Lets say M999 >>>takes arguments N, X, Y, Z. N would be the name of an external program >>>to run (say N=123, then ExtFn123 would be run). The other variables >>>would be passed as arguments. Variable #999 (or whatever) would get the >>>return value. >>> >>> >>> >>Why not enhance the existing "external M-code" feature so that it can >>pass multiple arguments (not just P and Q) to the called program, and >>which can get some sort of function return? The returned value could >>even be a string that gets parsed, so the program could return something >>like #999=[47.2] #998="-109" ... >> >> >I hesitate to change the existing feature because I wouldn't want to >break existing programs. My understanding is that the values of P and Q >are assigned to the first and second arguments of the script. It makes >sense to just pass the named arguments to the script in (not necessarily >in the order that they occur) including the letter, the '=' and the >value (after evaluation of functions). > > I would leave the P and Q values as arguments, and maybe set environment variables for all the parameters (including P and Q - no sense leaving them out).
>I think that parsing the returned string value is an excellent idea. >That would even let you call a gcode subroutine with supplied values. > > If we could execute the returned data as g-code (basically by capturing whatever is printed to the console or some other file descriptor), that would go a long way toward implementing some macro features people have asked for. > [snip] > >Thanks for your comments, Steve. Since I don't have a probe, I don't >think I'll be implementing this any time soon. > > Me either :) - Steve ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
