ManuelW/grbl-LPC-CoreXY
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Sonny Jeon ff82489da7 Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 
- Limit pin internal pull-resistors now enabled. Normal high operation.
This will be the standard going forward.

- Updated all of the 'double' variable types to 'float' to reflect what
happens when compiled for the Arduino. Also done for compatibility
reasons to @jgeisler0303 's Grbl simulator code.

- G-code parser will now ignore 'E' exponent values, since they are
reserved g-code characters for some machines. Thanks @csdexter!

- The read_double() function was re-written and optimized for use in
Grbl. The strtod() avr lib was removed.
2012-10-08 15:57:58 -06:00
doc No changes. Github commit bug. 2012-06-27 07:06:24 -06:00
script No changes. Github commit bug. 2012-06-27 07:06:24 -06:00
.gitignore merged master 2011-01-31 19:42:56 +01:00
config.h Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
coolant_control.c Minor prescalar optimization. Changed up some defines. 2012-09-21 17:55:02 -06:00
coolant_control.h Added coolant control (M7*, M8, M9). Mist control can be enabled via config.h. 2012-09-21 11:14:13 -06:00
COPYING No changes. Github commit bug. 2012-06-27 07:06:24 -06:00
eeprom.c formatting 2011-01-31 23:04:39 +01:00
eeprom.h No changes. Github commit bug. 2012-06-27 07:06:24 -06:00
gcode.c Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
gcode.h Updated limit/homing routine. Works, but needs more TLC. 2012-09-30 19:57:10 -06:00
limits.c Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
limits.h No changes. Github commit bug. 2012-06-27 07:06:24 -06:00
main.c Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
Makefile Added coolant control (M7*, M8, M9). Mist control can be enabled via config.h. 2012-09-21 11:14:13 -06:00
motion_control.c Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
motion_control.h Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
nuts_bolts.c Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
nuts_bolts.h Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
planner.c Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
planner.h Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
print.c Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
print.h Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
protocol.c Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
protocol.h No changes. Github commit bug. 2012-06-27 07:06:24 -06:00
readme.textile Added step pulse delay after direction set (Compile-time option only). Updated read me. 2012-06-26 21:48:42 -06:00
serial.c Updated limit/homing routine. Works, but needs more TLC. 2012-09-30 19:57:10 -06:00
serial.h No changes. Github commit bug. 2012-06-27 07:06:24 -06:00
settings.c Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
settings.h Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
spindle_control.c Added coolant control (M7*, M8, M9). Mist control can be enabled via config.h. 2012-09-21 11:14:13 -06:00
spindle_control.h Added coolant control (M7*, M8, M9). Mist control can be enabled via config.h. 2012-09-21 11:14:13 -06:00
stepper.c Limit pin internal pull-resistors enabled. Re-wrote read_double() function. Correctly changed all 'double's to 'float's. 2012-10-08 15:57:58 -06:00
stepper.h No changes. Github commit bug. 2012-06-27 07:06:24 -06:00

readme.textile 

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, as well as, other basic functional g-code commands. Functions and variables are not currently supported, but may be included in future releases in a form of a pre-processor.

Grbl includes full acceleration management with look ahead. That means the controller will look up to 18 motions into the future and plan its velocities ahead to deliver smooth acceleration and jerk-free cornering.

*Changelog for v0.8 from v0.7:*
  - *ALPHA status: _Under heavy development. Code state may significantly change with each push as new features are integrated._*
  - Major structural overhaul to allow for multi-tasking events and new feature sets
  - New run-time command control: Feed hold (pause), Cycle start (resume), Reset (abort), Status reporting
  - Controlled feed hold with deceleration to ensure no skipped steps and loss of location.
  - After feed hold, cycle accelerations are re-planned and may be resumed.
  - Re-factored g-code parser with robust error-checking.
  - Work coordinate system (G54), offsets(G92), and machine coordinate system support. G10 work coordinate settings support. (Up to 6 work coordinate systems(G54-G59) available as a compile-time option.)
  - Program stop(M0,M1*,M2,M30) initial support. Optional stop to do.
  - System reset re-initializes grbl without resetting the Arduino and retains machine/home position and work coordinates.
  - Restructured planner and stepper modules to become independent and ready for future features.
  - Reduced serial read buffer to 128 characters and increased write buffer to 64 characters.
  - Misc bug fixes and removed deprecated acceleration enabled code.  
  - Planned features: Jog mode, full-featured status reporting, runtime settings such as toggling block delete.
  - Advanced compile-time options: Up to 6 work coordinate systems(G54-G59), XON/XOFF flow control (limited support), direction and step pulse time delay.
  

*Important note for Atmega 168 users:* Going forward, support for Atmega 168 will be dropped due to its limited memory and speed. However, legacy Grbl v0.51 "in the branch called 'v0_51' is still available for use.

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