Excellent Jeff, that's it, thanks. I just had to change the line to "setp m5i20.0.out-03-invert 0" instead of "invert 1". I thought "invert 1" just toggled the default state - hadn't understood how it worked.
Regards Steve Corboy > Message: 3 > Date: Tue, 22 Dec 2009 10:54:37 -0600 > From: Jeff Epler <jep...@unpythonic.net> > Subject: Re: [Emc-users] How to invert pin connected to signal? > To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.net> > Message-ID: <20091222165437.gb4...@unpythonic.net> > Content-Type: text/plain; charset=us-ascii > > I would expect what you described (setp ...-invert) to work. It's true > that you can't setp a pin that is connected to a signal, but -invert is > not connected to any signal. > > When emc is running, open a terminal, run 'halcmd', then 'show param > m5i20.0.out-03-invert'. This will show whether the pin is supposed to > be inverted or not. > > Hm, looking at the source code, it appears that in the m5i20 driver the > default value of -invert is TRUE. Perhaps you actually need to set it > to FALSE to get the opposite polarity? The 7i37 isolation daughtercard > has active-low outputs; this may have been done so that the default is > compatible with the 7i37. > > Jeff > > > > ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
