1fa3dad206
- Increased g-code parser line buffer to 70 characters (from 50) to prevent some long arc commands from getting truncated. - Decreased planner buffer from 18 to 17 blocks to free up memory for line buffer. - Added a line buffer overflow feedback error (Thanks @BHSPitMonkey!)
249 lines
14 KiB
C
249 lines
14 KiB
C
/*
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config.h - compile time configuration
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Part of Grbl
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Copyright (c) 2009-2011 Simen Svale Skogsrud
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Copyright (c) 2011-2013 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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#ifndef config_h
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#define config_h
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// IMPORTANT: Any changes here requires a full re-compiling of the source code to propagate them.
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// Default settings. Used when resetting EEPROM. Change to desired name in defaults.h
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#define DEFAULTS_GENERIC
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// Serial baud rate
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#define BAUD_RATE 9600
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// Define pin-assignments
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// NOTE: All step bit and direction pins must be on the same port.
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#define STEPPING_DDR DDRD
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#define STEPPING_PORT PORTD
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#define X_STEP_BIT 2 // Uno Digital Pin 2
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#define Y_STEP_BIT 3 // Uno Digital Pin 3
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#define Z_STEP_BIT 4 // Uno Digital Pin 4
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#define X_DIRECTION_BIT 5 // Uno Digital Pin 5
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#define Y_DIRECTION_BIT 6 // Uno Digital Pin 6
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#define Z_DIRECTION_BIT 7 // Uno Digital Pin 7
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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 DIRECTION_MASK ((1<<X_DIRECTION_BIT)|(1<<Y_DIRECTION_BIT)|(1<<Z_DIRECTION_BIT)) // All direction bits
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#define STEPPING_MASK (STEP_MASK | DIRECTION_MASK) // All stepping-related bits (step/direction)
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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 0 // Uno Digital Pin 8
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#define STEPPERS_DISABLE_MASK (1<<STEPPERS_DISABLE_BIT)
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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_PIN PINB
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#define LIMIT_PORT PORTB
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#define X_LIMIT_BIT 1 // Uno Digital Pin 9
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#define Y_LIMIT_BIT 2 // Uno Digital Pin 10
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#define Z_LIMIT_BIT 3 // Uno Digital Pin 11
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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_DDR DDRB
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#define SPINDLE_ENABLE_PORT PORTB
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#define SPINDLE_ENABLE_BIT 4 // Uno Digital Pin 12
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#define SPINDLE_DIRECTION_DDR DDRB
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#define SPINDLE_DIRECTION_PORT PORTB
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#define SPINDLE_DIRECTION_BIT 5 // Uno Digital Pin 13 (NOTE: D13 can't be pulled-high input due to LED.)
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#define COOLANT_FLOOD_DDR DDRC
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#define COOLANT_FLOOD_PORT PORTC
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#define COOLANT_FLOOD_BIT 3 // Uno Analog Pin 3
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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 ENABLE_M7 // Mist coolant disabled by default. Uncomment to enable.
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#ifdef ENABLE_M7
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#define COOLANT_MIST_DDR DDRC
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#define COOLANT_MIST_PORT PORTC
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#define COOLANT_MIST_BIT 4 // Uno Analog Pin 4
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#endif
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// NOTE: All pinouts pins must be on the same port
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#define PINOUT_DDR DDRC
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#define PINOUT_PIN PINC
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#define PINOUT_PORT PORTC
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#define PIN_RESET 0 // Uno Analog Pin 0
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#define PIN_FEED_HOLD 1 // Uno Analog Pin 1
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#define PIN_CYCLE_START 2 // Uno Analog Pin 2
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#define PINOUT_INT PCIE1 // Pin change interrupt enable pin
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#define PINOUT_INT_vect PCINT1_vect
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#define PINOUT_PCMSK PCMSK1 // Pin change interrupt register
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#define PINOUT_MASK ((1<<PIN_RESET)|(1<<PIN_FEED_HOLD)|(1<<PIN_CYCLE_START))
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// Define runtime command special characters. These characters are 'picked-off' directly from the
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// serial read data stream and are not passed to the grbl line execution parser. Select characters
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// that do not and must not exist in the streamed g-code program. ASCII control characters may be
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// used, if they are available per user setup. Also, extended ASCII codes (>127), which are never in
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// g-code programs, maybe selected for interface programs.
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// NOTE: If changed, manually update help message in report.c.
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#define CMD_STATUS_REPORT '?'
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#define CMD_FEED_HOLD '!'
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#define CMD_CYCLE_START '~'
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#define CMD_RESET 0x18 // ctrl-x
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// The "Stepper Driver Interrupt" employs the Pramod Ranade inverse time algorithm to manage the
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// Bresenham line stepping algorithm. The value ISR_TICKS_PER_SECOND is the frequency(Hz) at which
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// the Ranade algorithm ticks at. Recommended step frequencies are limited by the Ranade frequency by
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// approximately 0.75-0.9 * ISR_TICK_PER_SECOND. Meaning for 30kHz, the max step frequency is roughly
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// 22.5-27kHz, but 30kHz is still possible, just not optimal. An Arduino can safely complete a single
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// interrupt of the current stepper driver algorithm theoretically up to a frequency of 35-40kHz, but
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// CPU overhead increases exponentially as this frequency goes up. So there will be little left for
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// other processes like arcs.
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#define ISR_TICKS_PER_SECOND 30000L // Integer (Hz)
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// The temporal resolution of the acceleration management subsystem. Higher number give smoother
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// acceleration but may impact performance. If you run at very high feedrates (>15kHz or so) and
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// very high accelerations, this will reduce the error between how the planner plans the velocity
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// profiles and how the stepper program actually performs them. The correct value for this parameter
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// is machine dependent, so it's advised to set this only as high as needed. Approximate successful
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// values can widely range from 50 to 200 or more. Cannot be greater than ISR_TICKS_PER_SECOND/2.
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#define ACCELERATION_TICKS_PER_SECOND 120L
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// NOTE: Make sure this value is less than 256, when adjusting both dependent parameters.
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#define ISR_TICKS_PER_ACCELERATION_TICK (ISR_TICKS_PER_SECOND/ACCELERATION_TICKS_PER_SECOND)
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// The Ranade algorithm can use either floating point or long integers for its counters, but for
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// integers the counter values must be scaled since these values can be very small (10^-6). This
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// multiplier value scales the floating point counter values for use in a long integer. Long integers
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// are finite so select the multiplier value high enough to avoid any numerical round-off issues and
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// still have enough range to account for all motion types. However, in most all imaginable CNC
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// applications, the following multiplier value will work more than well enough. If you do have
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// happened to weird stepper motion issues, try modifying this value by adding or subtracting a
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// zero and report it to the Grbl administrators.
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#define RANADE_MULTIPLIER 100000000.0
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// Minimum planner junction speed. Sets the default minimum speed the planner plans for at the end
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// of the buffer and all stops. This should not be much greater than zero and should only be changed
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// if unwanted behavior is observed on a user's machine when running at very slow speeds.
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#define MINIMUM_PLANNER_SPEED 0.0 // (mm/min)
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// Minimum stepper rate for the "Stepper Driver Interrupt". Sets the absolute minimum stepper rate
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// in the stepper program and never runs slower than this value. If the RANADE_MULTIPLIER value
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// changes, it will affect how this value works. So, if a zero is add/subtracted from the
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// RANADE_MULTIPLIER value, do the same to this value if you want to same response.
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// NOTE: Compute by (desired_step_rate/60) * RANADE_MULTIPLIER/ISR_TICKS_PER_SECOND. (mm/min)
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#define MINIMUM_STEP_RATE 1000L // Integer (mult*mm/isr_tic)
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// Minimum stepper rate. Only used by homing at this point. May be removed in later releases.
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#define MINIMUM_STEPS_PER_MINUTE 800 // (steps/min) - Integer value only
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// Time delay increments performed during a dwell. The default value is set at 50ms, which provides
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// a maximum time delay of roughly 55 minutes, more than enough for most any application. Increasing
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// this delay will increase the maximum dwell time linearly, but also reduces the responsiveness of
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// run-time command executions, like status reports, since these are performed between each dwell
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// time step. Also, keep in mind that the Arduino delay timer is not very accurate for long delays.
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#define DWELL_TIME_STEP 50 // Integer (1-255) (milliseconds)
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// If homing is enabled, homing init lock sets Grbl into an alarm state upon power up. This forces
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// the user to perform the homing cycle (or override the locks) before doing anything else. This is
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// mainly a safety feature to remind the user to home, since position is unknown to Grbl.
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#define HOMING_INIT_LOCK // Comment to disable
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// The homing cycle seek and feed rates will adjust so all axes independently move at the homing
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// seek and feed rates regardless of how many axes are in motion simultaneously. If disabled, rates
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// are point-to-point rates, as done in normal operation. For example in an XY diagonal motion, the
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// diagonal motion moves at the intended rate, but the individual axes move at 70% speed. This option
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// just moves them all at 100% speed.
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#define HOMING_RATE_ADJUST // Comment to disable
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// Define the homing cycle search patterns with bitmasks. The homing cycle first performs a search
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// to engage the limit switches. HOMING_SEARCH_CYCLE_x are executed in order starting with suffix 0
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// and searches the enabled axes in the bitmask. This allows for users with non-standard cartesian
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// machines, such as a lathe (x then z), to configure the homing cycle behavior to their needs.
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// Search cycle 0 is required, but cycles 1 and 2 are both optional and may be commented to disable.
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// After the search cycle, homing then performs a series of locating about the limit switches to hone
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// in on machine zero, followed by a pull-off maneuver. HOMING_LOCATE_CYCLE governs these final moves,
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// and this mask must contain all axes in the search.
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// NOTE: Later versions may have this installed in settings.
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#define HOMING_SEARCH_CYCLE_0 (1<<Z_AXIS) // First move Z to clear workspace.
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#define HOMING_SEARCH_CYCLE_1 ((1<<X_AXIS)|(1<<Y_AXIS)) // Then move X,Y at the same time.
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// #define HOMING_SEARCH_CYCLE_2 // Uncomment and add axes mask to enable
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#define HOMING_LOCATE_CYCLE ((1<<X_AXIS)|(1<<Y_AXIS)|(1<<Z_AXIS)) // Must contain ALL search axes
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// Number of homing cycles performed after when the machine initially jogs to limit switches.
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// This help in preventing overshoot and should improve repeatability. This value should be one or
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// greater.
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#define N_HOMING_LOCATE_CYCLE 2 // Integer (1-128)
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// Number of blocks Grbl executes upon startup. These blocks are stored in EEPROM, where the size
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// and addresses are defined in settings.h. With the current settings, up to 5 startup blocks may
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// be stored and executed in order. These startup blocks would typically be used to set the g-code
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// parser state depending on user preferences.
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#define N_STARTUP_LINE 2 // Integer (1-5)
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// Number of arc generation iterations by small angle approximation before exact arc trajectory
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// correction. This parameter maybe decreased if there are issues with the accuracy of the arc
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// generations. In general, the default value is more than enough for the intended CNC applications
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// of grbl, and should be on the order or greater than the size of the buffer to help with the
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// computational efficiency of generating arcs.
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#define N_ARC_CORRECTION 20 // Integer (1-255)
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// ---------------------------------------------------------------------------------------
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// FOR ADVANCED USERS ONLY:
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// The number of linear motions in the planner buffer to be planned at any give time. The vast
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// majority of RAM that Grbl uses is based on this buffer size. Only increase if there is extra
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// available RAM, like when re-compiling for a Mega or Sanguino. Or decrease if the Arduino
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// begins to crash due to the lack of available RAM or if the CPU is having trouble keeping
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// up with planning new incoming motions as they are executed.
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// #define BLOCK_BUFFER_SIZE 17 // Uncomment to override default in planner.h.
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// Line buffer size from the serial input stream to be executed. Also, governs the size of
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// each of the startup blocks, as they are each stored as a string of this size. Make sure
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// to account for the available EEPROM at the defined memory address in settings.h and for
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// the number of desired startup blocks.
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// NOTE: 50 characters is not a problem except for extreme cases, but the line buffer size
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// can be too small and g-code blocks can get truncated. Officially, the g-code standards
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// support up to 256 characters. In future versions, this default will be increased, when
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// we know how much extra memory space we can re-invest into this.
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// #define LINE_BUFFER_SIZE 70 // Uncomment to override default in protocol.h
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// Serial send and receive buffer size. The receive buffer is often used as another streaming
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// buffer to store incoming blocks to be processed by Grbl when its ready. Most streaming
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// interfaces will character count and track each block send to each block response. So,
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// increase the receive buffer if a deeper receive buffer is needed for streaming and avaiable
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// memory allows. The send buffer primarily handles messages in Grbl. Only increase if large
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// messages are sent and Grbl begins to stall, waiting to send the rest of the message.
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// #define RX_BUFFER_SIZE 128 // Uncomment to override defaults in serial.h
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// #define TX_BUFFER_SIZE 64
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// Toggles XON/XOFF software flow control for serial communications. Not officially supported
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// due to problems involving the Atmega8U2 USB-to-serial chips on current Arduinos. The firmware
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// on these chips do not support XON/XOFF flow control characters and the intermediate buffer
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// in the chips cause latency and overflow problems with standard terminal programs. However,
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// using specifically-programmed UI's to manage this latency problem has been confirmed to work.
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// As well as, older FTDI FT232RL-based Arduinos(Duemilanove) are known to work with standard
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// terminal programs since their firmware correctly manage these XON/XOFF characters. In any
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// case, please report any successes to grbl administrators!
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// #define ENABLE_XONXOFF // Default disabled. Uncomment to enable.
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// ---------------------------------------------------------------------------------------
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// TODO: Install compile-time option to send numeric status codes rather than strings.
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#endif
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