On Monday 14 September 2020 15:16:04 Dave Matthews wrote: > On Fri, Sep 11, 2020 at 5:16 PM andy pugh <bodge...@gmail.com> wrote: > > On Fri, 11 Sep 2020 at 21:18, Dave Matthews <n36...@gmail.com> wrote: > > > The examples that I have found are for Mesa cards and seem to have > > > a lot of stuff in them that I don't have in my .ini and .hal > > > files. > > > > Have you looked at the supplied sim-axis-gantry config? > > > > > Any hints on where I can find the docs on editing the ini and hal > > > files to add the second Y home switch and having 4 joint homing? > > > > The important parts are the [KINS] section and the homing sequence > > numbers for the joints here: > > https://github.com/LinuxCNC/linuxcnc/blob/master/configs/sim/axis/ga > >ntry/gantry.ini > > > > Then you just need to connect the two joint.N.home-sw-in pins to the > > relevant parport pins in the HAL file. > > > > (I wouldn't suggest looking at the simulated-gantry-home HAL file, > > that is almost entirely related to _simulating_ home switches.) > > Almost there. There isn't a gantry.hal file on github that I can find > to reference. I set up the Kinematics and added the new switch being > careful to not have a name conflict. I copy/pasted the joint for the > current Y axis (JOINT_1) creating JOINT_3. I then replaced the 1 in > that section with 3 to create the new joint. When I start LinuxCNC I > get an exit because ypos-cmd, ypos-fb, ystep and yenable have already > been assigned during the JOINT_1 setup. With those lines commented > out I can get a startup and 4 joints showing on the screen. > > The relevant hal section, a copy of JOINT_1 is: > setp stepgen.3.position-scale [JOINT_3]SCALE > setp stepgen.3.steplen 1 > setp stepgen.3.stepspace 0 > setp stepgen.3.dirhold 65000 > setp stepgen.3.dirsetup 65000 > setp stepgen.3.maxaccel [JOINT_3]STEPGEN_MAXACCEL > net ypos-cmd joint.3.motor-pos-cmd => stepgen.3.position-cmd > net ypos-fb stepgen.3.position-fb => joint.3.motor-pos-fb > net ystep <= stepgen.3.step > net ydir <= stepgen.3.dir > net yenable joint.3.amp-enable-out => stepgen.3.enable > net home-y-right => joint.3.home-sw-in > > I am not finding the place in the docs telling me what to do with > these lines. Delete them? Rename the variables? I didn't do this > as I couldn't find other references which leads me to think they may > be fixed names used by the code. > > Dave
One of the rules for the net command is that only the first of that name in your hal file, is allowed to be an input. Re-use of a given name is assumed to be a link to send that signal to another target, like your joint 3 stuff. A way to send a given signal to many places. Your net ystep lines arrows are backwards IOW. And its confusing because at one point, those <= and => were ignored. only there to help us humans understand. But with two-pass enabled, I'm not so sure, so someone should clarify that. So scan the file, and make sure the first use of a signals name, assigns the source of that signal. > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
