- Added acceleration to the homing routine.
- Homing now accounts for different step rates when moving multiple
axes without exceeding acceleration limits.
- Homing now updates all internal positioning variables to machine zero
after completion.
- "Poor-man's" debounce delay added.
- Updated the delay_us() function to perform faster and more accurate
microsecond delays. Previously, the single increments would add
noticeable time drift for larger delays.
- Fix a bug in the stepper.c prescalar calculations that was changed in
the last commit.
- Other minor fixes.
- Updated makefile to be more universally compatible by not requiring
grep or ruby.
- Edited XON/XOFF flow control usage, noting that FTDI-based Arduinos
are known to work, but not Atmega8U2-based Arduino. Still officially
not supported, but added for advanced users.
- Minor edits.
- G54 work coordinate system support. Up to 6 work coordinate systems
(G54-G59) available as a compile-time option.
- G10 command added to set work coordinate offsets from machine
position.
- G92/G92.1 position offsets and cancellation support. Properly follows
NIST standard rules with other systems.
- G53 absolute override now works correctly with new coordinate systems.
- Revamped g-code parser with robust error checking. Providing user
feedback with bad commands. Follows NIST standards.
- Planner module slightly changed to only expected position movements
in terms of machine coordinates only. This was to simplify coordinate
system handling, which is done solely by the g-code parser.
- Upon grbl system abort, machine position and work positions are
retained, while G92 offsets are reset per NIST standards.
- Compiler compatibility update for _delay_us().
- Updated README.
- Grbl now tracks both home and work (G92) coordinate systems and does
live updates when G92 is called.
- Rudimentary home and work position status reporting. Works but still
under major construction.
- Updated the main streaming script. Has a disabled periodic timer for
querying status reports, disabled only because the Python timer doesn't
consistently restart after the script exits. Add here only for user
testing.
- Fixed a bug to prevent an endless serial_write loop during status
reports.
- Refactored the planner variables to make it more clear what they are
and make it easier for clear them.
- ALPHA status. - Multitasking ability with run-time command executions
for real-time control and feedback. - Decelerating feed hold and resume
during operation. - System abort/reset, which immediately kills all
movement and re-initializes grbl. - Re-structured grbl to easily allow
for new features: Status reporting, jogging, backlash compensation. (To
be completed in the following releases.) - Resized TX/RX serial buffers
(32/128 bytes) - Increased planner buffer size to 20 blocks. - Updated
documentation.
