On 17 August 2015 at 16:49, John Kasunich <jmkasun...@fastmail.fm> wrote: > If you start thinking about this from a timing/synchronization perspective, > then > there is nothing magic about reading the pins when you hit RUN. It could just > as easily be "read the pins when you encounter custom M-code Mxxxx", or > when you encounter magic comment (halread <halname> <named_param>).
Maybe I have unnecessarily muddied the waters when I said that the values are read when you press "Run". That isn't technically correct. The values are read when the interpreter interprets the line. What i meant to suggest is that you wouldn't want to be relying on the G-code seeing your new value if you change it after the G-code has started. It would be possible to make the existing format a queue-buster, and that would have the same effect as the magic-comment. The magic-comment is just a different way to do exactly the same thing that Jeff dislikes the idea of. (I am not sure I quite understand the basis of Jeff's objections, unless it is actually that a HAL pin value is being read without actually appearing in the HAL file?) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
