[Emc-commit] [LinuxCNC/linuxcnc] 9ed4eb: motion: ramp a jog down to a lowered speed on the ...

[Luca T. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/LinuxCNC/linuxcnc
  Commit: 9ed4ebcf8236a101f61f5a7efd3c12e0620ed731
      https://github.com/LinuxCNC/linuxcnc/commit/9ed4ebcf8236a101f61f5a7efd3c12e0620ed731
  Author: Luca Toniolo <107...@us...>
  Date:   2026-10-11 (Sun, 11 Oct 2026)

  Changed paths:
    M src/emc/motion/simple_tp.c
    A tests/jog-speed-change/README
    A tests/jog-speed-change/checkresult
    A tests/jog-speed-change/sim.hal
    A tests/jog-speed-change/test-ui.py
    A tests/jog-speed-change/test.ini
    A tests/jog-speed-change/test.sh
    A tests/jog-speed-change/tool.tbl

  Log Message:
  -----------
  motion: ramp a jog down to a lowered speed on the S-curve planner

A continuous jog asked again at a lower speed while it runs, as halui
does when its jog-speed pin changes while a jog pin is held, dropped to
the new speed in one servo cycle on the S-curve planner: the ramp toward
max_vel was computed, then the speed was clamped to max_vel anyway.
>From 80 to 10 mm/s that is 70000 mm/s^2 against an 800 limit, on a
joint jog and on a world jog alike.  The trapezoid planner ramps.

Clamp only while the speed is within max_vel; above it the ramp brings
it down within the acceleration and jerk limits.

tests/jog-speed-change samples every servo cycle of both jogs on both
planners.


  Commit: 2655e62fe6aa38a6a6fa158aab9655911a393c39
      https://github.com/LinuxCNC/linuxcnc/commit/2655e62fe6aa38a6a6fa158aab9655911a393c39
  Author: Luca Toniolo <107...@us...>
  Date:   2026-10-12 (Mon, 12 Oct 2026)

  Changed paths:
    M src/emc/motion/simple_tp.c
    A tests/jog-speed-change/README
    A tests/jog-speed-change/checkresult
    A tests/jog-speed-change/sim.hal
    A tests/jog-speed-change/test-ui.py
    A tests/jog-speed-change/test.ini
    A tests/jog-speed-change/test.sh
    A tests/jog-speed-change/tool.tbl

  Log Message:
  -----------
  Merge pull request #4667 from grandixximo/scurve-jog-slowdown

motion: ramp a jog down to a lowered speed on the S-curve planner


Compare: https://github.com/LinuxCNC/linuxcnc/compare/c67a718de50d...2655e62fe6aa

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