ManuelW/grbl-LPC-CoreXY
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Sonny J 110faae986 More '%' modulo opertor removals and some housecleaning. 
- Serial functions contained quite a few modulo operations that would
be executed with high frequency when streaming. AVR processors are very
slow when operating these. In one test on the Arduino forums, it showed
about a 15x slow down compared to a simple if-then statement. -
Clarified some variable names and types and comments.
2011-09-15 20:32:15 -06:00
doc cleaned up serial completing support for non blocking tx and refactoring formatting functions into a new module 'print' 2011-06-03 15:28:14 +02:00
script Further planner improvements and misc minor bug fixes. Memory savings and increased buffer size. 2011-09-13 21:57:16 -06:00
.gitignore merged master 2011-01-31 19:42:56 +01:00
config.h converted the STEPPER_ENABLE_PIN to a STEPPER_DISABLE_PIN as per the request of Alden Hart of Grbl Shield fame. 2011-05-31 13:08:42 +02:00
COPYING renamed file 2009-01-26 10:51:02 +01:00
eeprom.c formatting 2011-01-31 23:04:39 +01:00
eeprom.h Added runtime configurable global settings with eeprom persitence 2010-03-07 20:29:18 +01:00
gcode.c More '%' modulo opertor removals and some housecleaning. 2011-09-15 20:32:15 -06:00
gcode.h refactored handling of settings '$' command out of gcode module and into settings module 2011-02-18 22:59:16 +01:00
limits.c added support for limit switches and homing action 2011-02-20 00:29:56 +01:00
limits.h added support for limit switches and homing action 2011-02-20 00:29:56 +01:00
main.c Fixed serial.c after tests on real hardware 2011-06-05 20:54:23 +02:00
Makefile cleaned up serial completing support for non blocking tx and refactoring formatting functions into a new module 'print' 2011-06-03 15:28:14 +02:00
motion_control.c More '%' modulo opertor removals and some housecleaning. 2011-09-15 20:32:15 -06:00
motion_control.h More '%' modulo opertor removals and some housecleaning. 2011-09-15 20:32:15 -06:00
nuts_bolts.c cleaned up handling of number parsing in settings_execute_command 2011-02-18 23:08:06 +01:00
nuts_bolts.h Further planner improvements and misc minor bug fixes. Memory savings and increased buffer size. 2011-09-13 21:57:16 -06:00
planner.c Further planner improvements and misc minor bug fixes. Memory savings and increased buffer size. 2011-09-13 21:57:16 -06:00
planner.h Further planner improvements and misc minor bug fixes. Memory savings and increased buffer size. 2011-09-13 21:57:16 -06:00
print.c changed default fp decimal places to 3 2011-06-05 20:58:21 +02:00
print.h cleaned up function definitions for serial and print modules and added a comment about the deeply flawed printFloat method 2011-06-03 15:36:14 +02:00
protocol.c Further planner improvements and misc minor bug fixes. Memory savings and increased buffer size. 2011-09-13 21:57:16 -06:00
protocol.h renamed wiring_serial to serial to reflect its complete remake 2011-05-31 22:45:38 +02:00
readme.textile updated readme to reflect real state of 168-compatibility 2011-06-05 21:12:56 +02:00
serial.c More '%' modulo opertor removals and some housecleaning. 2011-09-15 20:32:15 -06:00
serial.h refactored printIntegerInBase to work without a buffer + minor cleanup 2011-06-03 21:50:02 +02:00
settings.c More '%' modulo opertor removals and some housecleaning. 2011-09-15 20:32:15 -06:00
settings.h Further planner improvements and misc minor bug fixes. Memory savings and increased buffer size. 2011-09-13 21:57:16 -06:00
spindle_control.c spindle could not be stopped. Thanks again to Etienne for reporting 2011-02-25 15:00:47 +01:00
spindle_control.h refactored block buffer into separate module motion_plan pending the addition of the actual look ahead planner 2011-01-14 16:45:18 +01:00
stepper.c cleaned up serial completing support for non blocking tx and refactoring formatting functions into a new module 'print' 2011-06-03 15:28:14 +02:00
stepper.h added support for limit switches and homing action 2011-02-20 00:29:56 +01:00

readme.textile

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h1. Grbl - An embedded g-code interpreter and motion-controller for the Arduino/AVR328 microcontroller
    
Grbl is a no-compromise, high performance, low cost alternative to parallel-port-based motion control for CNC milling. It will run on a vanilla Arduino (Duemillanove/Uno) as long as it sports an Atmega 328. 

The controller is written in highly optimized C utilizing every clever feature of the AVR-chips to achieve precise timing and asynchronous operation. It is able to maintain more than 30kHz of stable, jitter free control pulses.

It accepts standards-compliant G-code and has been tested with the output of several CAM tools with no problems. Arcs, circles and helical motion are fully supported - but no support for tool offsets, functions or variables as these are apocryphal and fell into disuse after humans left G-code authoring to machines some time in the 80s.

Grbl includes full acceleration management with look ahead. That means the controller will look up to 20 motions into the future and plan its velocities ahead to deliver smooth acceleration and jerk-free cornering.

*Important note for Atmega 168 users:* Grbl used to be compatible with both the older Ardunios running atmega 168 and the newer with 328p. The full version of Grbl now compiles without support for circles/arcs if you target 168. If you need arcs, but not acceleration-management I am still maintaining Grbl 0.51 "in the branch called 'v0_51'":https://github.com/simen/grbl/tree/v0_51.

*Note for users upgrading from 0.51 to 0.6:* The new version has new and improved default pin-out. If nothing works when you upgrade, that is because the pulse trains are coming from the wrong pins. This is a simple matter of editing config.h – the whole legacy pin assignment is there for you to uncomment.

_The project was initially inspired by the Arduino GCode Interpreter by Mike Ellery_