137 lines
5.3 KiB
C
137 lines
5.3 KiB
C
/*
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cpu_map_atmega2560.h - CPU and pin mapping configuration file
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Part of Grbl
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Copyright (c) 2012-2015 Sungeun K. Jeon
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Grbl is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Grbl is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Grbl. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* This cpu_map file serves as a central pin mapping settings file for AVR Mega 2560 */
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#ifdef GRBL_PLATFORM
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#error "cpu_map already defined: GRBL_PLATFORM=" GRBL_PLATFORM
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#endif
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#define GRBL_PLATFORM "Atmega2560"
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// Serial port pins
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#define SERIAL_RX USART0_RX_vect
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#define SERIAL_UDRE USART0_UDRE_vect
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// Increase Buffers to make use of extra SRAM
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//#define RX_BUFFER_SIZE 256
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//#define TX_BUFFER_SIZE 128
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//#define BLOCK_BUFFER_SIZE 36
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//#define LINE_BUFFER_SIZE 100
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// Define step pulse output pins. NOTE: All step bit pins must be on the same port.
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#define STEP_DDR DDRA
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#define STEP_PORT PORTA
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#define STEP_PIN PINA
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#define X_STEP_BIT 2 // MEGA2560 Digital Pin 24
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#define Y_STEP_BIT 3 // MEGA2560 Digital Pin 25
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#define Z_STEP_BIT 4 // MEGA2560 Digital Pin 26
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#define STEP_MASK ((1<<X_STEP_BIT)|(1<<Y_STEP_BIT)|(1<<Z_STEP_BIT)) // All step bits
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// Define step direction output pins. NOTE: All direction pins must be on the same port.
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#define DIRECTION_DDR DDRC
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#define DIRECTION_PORT PORTC
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#define DIRECTION_PIN PINC
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#define X_DIRECTION_BIT 7 // MEGA2560 Digital Pin 30
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#define Y_DIRECTION_BIT 6 // MEGA2560 Digital Pin 31
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#define Z_DIRECTION_BIT 5 // MEGA2560 Digital Pin 32
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#define DIRECTION_MASK ((1<<X_DIRECTION_BIT)|(1<<Y_DIRECTION_BIT)|(1<<Z_DIRECTION_BIT)) // All direction bits
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// Define stepper driver enable/disable output pin.
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#define STEPPERS_DISABLE_DDR DDRB
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#define STEPPERS_DISABLE_PORT PORTB
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#define STEPPERS_DISABLE_BIT 7 // MEGA2560 Digital Pin 13
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#define STEPPERS_DISABLE_MASK (1<<STEPPERS_DISABLE_BIT)
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// Define homing/hard limit switch input pins and limit interrupt vectors.
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// NOTE: All limit bit pins must be on the same port
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#define LIMIT_DDR DDRB
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#define LIMIT_PORT PORTB
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#define LIMIT_PIN PINB
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#define X_LIMIT_BIT 4 // MEGA2560 Digital Pin 10
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#define Y_LIMIT_BIT 5 // MEGA2560 Digital Pin 11
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#define Z_LIMIT_BIT 6 // MEGA2560 Digital Pin 12
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#define LIMIT_INT PCIE0 // Pin change interrupt enable pin
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#define LIMIT_INT_vect PCINT0_vect
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#define LIMIT_PCMSK PCMSK0 // Pin change interrupt register
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#define LIMIT_MASK ((1<<X_LIMIT_BIT)|(1<<Y_LIMIT_BIT)|(1<<Z_LIMIT_BIT)) // All limit bits
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// Define spindle enable and spindle direction output pins.
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#define SPINDLE_ENABLE_DDR DDRH
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#define SPINDLE_ENABLE_PORT PORTH
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#define SPINDLE_ENABLE_BIT 3 // MEGA2560 Digital Pin 6
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#define SPINDLE_DIRECTION_DDR DDRE
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#define SPINDLE_DIRECTION_PORT PORTE
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#define SPINDLE_DIRECTION_BIT 3 // MEGA2560 Digital Pin 5
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// Define flood and mist coolant enable output pins.
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// NOTE: Uno analog pins 4 and 5 are reserved for an i2c interface, and may be installed at
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// a later date if flash and memory space allows.
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#define COOLANT_FLOOD_DDR DDRH
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#define COOLANT_FLOOD_PORT PORTH
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#define COOLANT_FLOOD_BIT 5 // MEGA2560 Digital Pin 8
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#ifdef ENABLE_M7 // Mist coolant disabled by default. See config.h to enable/disable.
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#define COOLANT_MIST_DDR DDRH
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#define COOLANT_MIST_PORT PORTH
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#define COOLANT_MIST_BIT 6 // MEGA2560 Digital Pin 9
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#endif
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// Define user-control CONTROLs (cycle start, reset, feed hold) input pins.
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// NOTE: All CONTROLs pins must be on the same port and not on a port with other input pins (limits).
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#define CONTROL_DDR DDRK
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#define CONTROL_PIN PINK
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#define CONTROL_PORT PORTK
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#define RESET_BIT 0 // MEGA2560 Analog Pin 8
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#define FEED_HOLD_BIT 1 // MEGA2560 Analog Pin 9
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#define CYCLE_START_BIT 2 // MEGA2560 Analog Pin 10
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#define SAFETY_DOOR_BIT 3 // MEGA2560 Analog Pin 11
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#define CONTROL_INT PCIE2 // Pin change interrupt enable pin
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#define CONTROL_INT_vect PCINT2_vect
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#define CONTROL_PCMSK PCMSK2 // Pin change interrupt register
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#define CONTROL_MASK ((1<<RESET_BIT)|(1<<FEED_HOLD_BIT)|(1<<CYCLE_START_BIT)|(1<<SAFETY_DOOR_BIT))
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// Define probe switch input pin.
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#define PROBE_DDR DDRK
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#define PROBE_PIN PINK
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#define PROBE_PORT PORTK
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#define PROBE_BIT 7 // MEGA2560 Analog Pin 15
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#define PROBE_MASK (1<<PROBE_BIT)
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// Start of PWM & Stepper Enabled Spindle
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#ifdef VARIABLE_SPINDLE
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// Advanced Configuration Below You should not need to touch these variables
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// Set Timer up to use TIMER4B which is attached to Digital Pin 7
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#define PWM_MAX_VALUE 65535.0
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#define TCCRA_REGISTER TCCR4A
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#define TCCRB_REGISTER TCCR4B
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#define OCR_REGISTER OCR4B
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#define COMB_BIT COM4B1
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#define WAVE0_REGISTER WGM40
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#define WAVE1_REGISTER WGM41
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#define WAVE2_REGISTER WGM42
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#define WAVE3_REGISTER WGM43
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#define SPINDLE_PWM_DDR DDRH
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#define SPINDLE_PWM_PORT PORTH
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#define SPINDLE_PWM_BIT 4 // MEGA2560 Digital Pin 97
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#endif // End of VARIABLE_SPINDLE
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