[gnea/grbl-Mega Issue#25] jog after probe problem About GRBL HAL

Issue #25 | 状态: 进行中 | 作者: langwadt | 创建时间: 2017-05-28

I’m running the code on an STM32 so it entirely possible I screwed something up porting, but before
I start digging I’d like to know if it is a common issue.

The first jog following a probe, set the state to “run” rather than “jog” which means jog cancel is ignored
once it’s back to idle any following jog works as expected, setting the state to jog and respecting cancel

after further investigation: after probing sys.step_control is 3, i.e. END and HOLD, to make the following jog work correctly I either have to issue a cycle start or a regular move

#1 – ghost 于 2018-12-17

I can confirm this. I also have to issue a Cycle Start / Resume after probing to make jogging work as expected again (machine state JOG instead of RUN).

#2 – fra589 于 2021-09-26

Hi all,
I found the initial cause of this (old) bug
The sys.stepcontrol was not restored after the end of the probe cycle in motioncontrol.c because the probe cycle is initialized in the motion_control.c file and not in the protocol.c file.

The correction consist of adding this line after the line 306 of motion_control.c:
sys.stepcontrol = STEPCONTROLNORMALOP; // Fix #25 issue: restore step control to normal operation

@chamnit
I can’t make a pull request since my own fork grbl_Mega-5X is too far away of this version.
If you want, I added the diff file of motioncontrol.c (motioncontrol.diff.txt) so you can use it to fix your version.

https://github.com/gnea/grbl-Mega/issues/25

[gnea/grbl-Mega Issue#25] jog after probe problem

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