Made the double touch portion a conditional compile based on the
PROBE_DOUBLE_TOUCH flag.
==============================================
Bugfix
The current G38 only stopped a move if it involved the Z axis.
Moved all the G38 code to it's own section and put it where it would
always be executed no matter what axis was moving or if the endstop was
enabled.
Also added a comment to configuration_adv to alert the user the double
tap had to be turned on.
==============================================
Change G38 back to using Z_MIN_PROBE
There's no Z_MIN endstop if Z_DUAL_ENDSTOPS is enabled and you have them
set to the top of the gantry.
G38 started out as using the Z_MIN_PROBE pin. I don't remember why we
changed it to the Z_MIN endstop.
The tool_change function saves the current_position to the destination
array soon after starting. Later in the switching extruder section, the
destination array is modified when moving the Z axis up & down. A later
section of tool_change moves the head back to the “original location”
using the destination array. This later section assumes that the
destination array hasn’t been modified.
The fix is to save the destination Z position and then restore it after
the Z movements have completed.
Going back to using the current_position array for the switching
extruder Z axis moves (and leaving the destination array untouched)
doesn’t fix the problem.
This bug was introduced by the “Make tool_change kinematic compatible”
commit # 847429eff4 which was merged on 10
Oct 2016 as part of PR 4982.
This bug was discovered in Issue 5966.
In the endstop testing section, add the "reverse" logic in addition to "normal" core handling.
In CoreXY/YZ/XZ steppers rotating the same direction gives X movement. Opposing directions produces Y movement.
In CoreYX/ZY/ZX this is reversed. Same = Y, Opposite = X.
----
Fixes the issue where the Y endstop was being checked when moving in the X direction, etc.
To guarantee that the 5mS pulse from a BLTouch is recognized you need to
have the endstops.update() routine run twice in that 5mS period.
At 200 steps per mm, my system has problems below a feedrate of 120 mm
per minute.
Two things were done to guarantee the two updates within 5mS:
1) In interrupt mode, a check was added to the temperature ISR. If the
endstop interrupt flag/counter is active then it'll kick off the endstop
update routine every 1mS until the flag/counter is zero. This
flag/counter is decremented by the temperature ISR AND by the stepper
ISR.
2) In poling mode, code was added to the stepper ISR that will make sure
the ISR runs about every 1.5mS. The "extra" ISR runs only check the
endstops. This was done by grabbing the intended ISR delay and, if it's
over 2.0mS, splitting the intended delay into multiple smaller delays.
The first delay can be up to 2.0mS, the next ones 1.5mS (as needed) and
the last no less than 0.5mS.
=========================================
BLTouch error state recovery
If BLTouch already active when deploying the probe then try to reset it
& clear the probe.
If that doesn't fix it then declare an error.
Also added BLTouch init routine to startup section
added conditional compilation for PWMs 1C & 3C
add Teensyduino compatibility
==========================================
changes per review - minor formatting changes
1) remove non-printable character at the end of line 687
2) split a really long comment into two lines
3) got rid of some trailing spaces
============================================
Made pinsDebug_Teensyduino.h the same between this PR and PR 5668 which
is for a re-written pinsDebug.h file.
The changes were:
1) added copyright @ GNU license header
2) a blank line crept in.
1) modified 3 code files
Marlin.h
Marlin_main.cpp
endstops.cpp
2) modified config files so I could test on my machine
Testing was done on an AzteegX3pro based machine.
The probe was hooked to the Z_MIN endstop.
My controller doesn't have a dedicated Z_PROBE input so I couldn't test
that functionality.
Verified that a large file (without any G38 commands) executed the same
before and after the changes.
Verified that the head moves as expected when G38.2 and G38.3 commands
are issued. Single & multiple axis moves were tested along with + and -
directions.
Code was added to the main ISR. In normal operation only one extra IF
statement is evaluated. I didn't notice any performance degradation
because of the added code.
The G38 commands are expected to be issued manually by the operator
during machine setup. The G38 commands wait until the machine is idle
before proceeding. That way the other commands are minimally impacted
by the extra ISR overhead when a G38 command is in the queue.
The G38 commands are very similar to the G28 commands except 1) only the
Z_PROBE is used and movement can be in the + or - direction.
See issue 4677 for a discussion on adding G38 commands to Marlin.
Feature request: add ability to use G38.2 command (CNC)
MarlinFirmware/Marlin#4677
Bob-the-KuhnandScott Lahteine