[LinuxCNC/linuxcnc Issue#23] joints _axes: cannot home in Axis GUI About GRBL HAL

Issue #23 | 状态: 已关闭 | 作者: SebKuzminsky | 创建时间: 2016-01-06

Ever since commit f2551bbaf05a8b41b0d162a964d82f57e94566af (“joints_axes9: joint jogging and axis gui updates”), i can not home the joints of my non-trivkins robot arm. I select the joint I want to home by clicking on it with the mouse, then hit the Home button on my keyboard, and Axis prints this:

Exception in Tkinter callback
Traceback (most recent call last):
  File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1437, in call
    return self.func(*args)
  File "/home/seb/linuxcnc-dev/bin/axis", line 2471, in home_joint
    if s.homed[trajcoordinates.index(vars.ja_rbutton.get())]:
ValueError: substring not found

The code in question is the home_joint function:

    def home_joint(event=None):
        if not manual_ok(): return
        doHoming=True
        if s.homed[trajcoordinates.index(vars.ja_rbutton.get())]:
            doHoming=promptareyousure(("Warning"),_("This joint is already homed, are you sure you want to re-home?"))
        if doHoming:
            ensuremode(linuxcnc.MODEMANUAL)
            gohome(trajcoordinates.index(vars.jarbutton.get()))

The problem is that the vars.ja_rbutton.get() function returns “0” when I have joint 0 selected and am in Free mode, but it’s trying to match is with an axis name (like “X” or “Y”) from the ini file.

#1 – SebKuzminsky 于 2016-01-06

Jeff identified the matching commit in ja10 as 6171b65.

#2 – SebKuzminsky 于 2016-01-06

As noted in #22: Home All works, but homing an individual joint does not work due to this issue.

#3 – SebKuzminsky 于 2016-01-07

Fixed by Dewey in 7f68abe5431 (joints_axes10).

#4 – cradek 于 2016-08-18

Reopening.

ctjctj on irc reports this is happening on ubuntu16/amd64 in 2.7 when trying to home Y. He reports that opening a gcode file fixes homing of Y.

I can’t find either 6171b65 or 7f68abe.

Machinekit has a related fix, b188548, but it seems incomplete because this idiom is used in more than one place (homing and touch off?)

I think we assumed this was a tcl version problem, but M. Buesch says it’s an amd64 problem. ctjctj reports it on amd64.

ctjctj’s backtrace:

cjohnson@whiteboard:~$ linuxcnc linuxcnc/configs/jgro2/jgro2.ini
LINUXCNC - 2.7.5
Machine configuration directory is '/home/cjohnson/linuxcnc/configs/jgro2'
Machine configuration file is 'jgro2.ini'
Starting LinuxCNC...
Found file(lib): /home/cjohnson/git/linuxcnc-dev/lib/hallib/core_sim.hal
Note: Using POSIX non-realtime
Found file(lib): /home/cjohnson/git/linuxcnc-dev/lib/hallib/simspindleencoder.hal
Found file(lib): /home/cjohnson/git/linuxcnc-dev/lib/hallib/axis_manualtoolchange.hal
Found file(lib): /home/cjohnson/git/linuxcnc-dev/lib/hallib/simulated_home.hal
Exception in Tkinter callback
Traceback (most recent call last):
  File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1540, in call
    return self.func(*args)
  File "/home/cjohnson/git/linuxcnc-dev/bin/axis", line 2356, in home_axis
    if s.homed["xyzabcuvw".index(vars.current_axis.get())]:
ValueError: substring not found
Shutting down and cleaning up LinuxCNC...

#5 – jepler 于 2016-08-19

The ‘substring not found’ bug is different, see #146

原始Issue: https://github.com/LinuxCNC/linuxcnc/issues/23

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