On 12/7/22 06:51, andy pugh wrote:
In February I fixed this bug:
https://github.com/LinuxCNC/linuxcnc/issues/1528
But, it seems, I failed to properly consider full-circle spiral arcs, and
the test was wrong.
https://github.com/LinuxCNC/linuxcnc/issues/2169
(Note that this issue report was _not_ raised by the original reporter, and
furthermore seems to show a _different_ issue.
I investigated and found a test case that I could reproduce, and put in a
fix for that. (linked in the issue report above)
However it is reported that the original bug (that I have never reproduced)
still exists.
Here is the problem description:
"if open axis.
Comand g2 x0 y0 j5 z-2 f1000.
The machine not execution g2 , but only Z-2."
I think that the system needs to be set up for immediate homing to 0,0,0 as
I have an unconfirmed report that this specific problem does not occur if
the axes have moved.
(But then the test cases that Tom_L shows in the bug report has the third
arc going wrong too)
The problem that I have is that my system appears to be working perfectly,
so I can't investigate the issue here.
I could revert the original patch, but then that reintroduces a known bug,
so I don't want to do that.
So, first help needed, someone who can compile from source _and_ can
reproduce the reported problems. (think that there might be two, and one
might well be an uninitialised "start" for the arc in the just-homed case)
This clearly can't go out as-is, I am only glad that I didn't put the
original fix in 2.8 (I thought that I had, actually)
I'm running that now, on the rpi4, takes about an hour on the rpi4b, and
I have bash set for lots of history. Script does a fresh pull so its
about 5 minutes old right now.
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, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/>
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