config.h

/*
  config.h - compile time configuration
  Part of Grbl

  Copyright (c) 2009-2011 Simen Svale Skogsrud

  Grbl is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  Grbl is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with Grbl.  If not, see <http://www.gnu.org/licenses/>.
*/

/*
Specifics for the CCHS CNC machine:

The X and Y axes:
Steppers have a 1.8degree step: 200 steps per revolution.
The lead of the screw: 0.125inches = 3.175mm.
3.175 is one turn.
So, turns_per_mm = 1/3.175 = 0.3149606299212598.
steps_per_mm = (steps_per_revolution*microsteps)/turns_per_mm
             = (200*1)/0.3149606299212598.
             = 635, very close to exact.
             
The Z axis: 
*/

#ifndef config_h
#define config_h


#ifndef __AVR_ATmega328P__
#define __AVR_ATmega328P__
#endif

#define BAUD_RATE 9600

// Updated default pin-assignments from 0.6 onwards 
// (see bottom of file for a copy of the old config)

#define STEPPERS_ENABLE_DDR     DDRC
#define STEPPERS_ENABLE_PORT    PORTC
#define STEPPERS_ENABLE_BIT         3 //PC3

#define STEPPERS_RESET_DDR     DDRC
#define STEPPERS_RESET_PORT    PORTC
#define STEPPERS_RESET_BIT         4 //PC4

#define STEPPING_DDR       DDRC
#define STEPPING_PORT      PORTC
#define X_STEP_BIT           5 //PC5
#define Y_STEP_BIT           6 //PC6
#define Z_STEP_BIT           7 //PC7
#define X_DIRECTION_BIT      2 //PC2
#define Y_DIRECTION_BIT      1 //PC1
#define Z_DIRECTION_BIT      0 //PC0

//as a default it goes 11000000.
//when X is going down, 11100000.

//#define LIMIT_DDR      DDRA
//#define LIMIT_PORT     PORTA
//#define X_LIMIT_BIT          1
//#define Y_LIMIT_BIT          2
//#define Z_LIMIT_BIT          3

#define SPINDLE_ENABLE_DDR DDRB
#define SPINDLE_ENABLE_PORT PORTB
#define SPINDLE_ENABLE_BIT 4

#define SPINDLE_DIRECTION_DDR DDRB
#define SPINDLE_DIRECTION_PORT PORTB
#define SPINDLE_DIRECTION_BIT 5

// The temporal resolution of the acceleration management subsystem. Higher number
// give smoother acceleration but may impact performance
#define ACCELERATION_TICKS_PER_SECOND 40L

#endif