df5bb70b25
- Thank you statement added for Alden Hart of Synthetos. - Hard limits option added, which also works with homing by pulling off the switches to help prevent unintended triggering. Hard limits use a interrupt to sense a falling edge pin change and immediately go into alarm mode, which stops everything and forces the user to issue a reset (Ctrl-x) or reboot. - Auto cycle start now a configuration option. - Alarm mode: A new method to kill all Grbl processes in the event of something catastrophic or potentially catastropic. Just works with hard limits for now, but will be expanded to include g-code errors (most likely) and other events. - Updated status reports to be configurable in inches or mm mode. Much more to do here, but this is the first step. - New settings: auto cycle start, hard limit enable, homing direction mask (which works the same as the stepper mask), homing pulloff distance (or distance traveled from homed machine zero to prevent accidental limit trip). - Minor memory liberation and calculation speed ups.
175 lines
9.4 KiB
C
Executable File
175 lines
9.4 KiB
C
Executable File
/*
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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) 2011-2012 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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#define BAUD_RATE 9600
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// Define pin-assignments
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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 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 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 settings
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#define LIMIT_INT_vect PCINT0_vect
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#define LIMIT_PCMSK PCMSK0
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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
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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 0 // Uno Analog Pin 0
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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 1 // Uno Analog Pin 1
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#endif
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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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// TODO: Solidify these default characters. Temporary for now.
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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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// Specifies the number of work coordinate systems grbl will support (G54 - G59).
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// This parameter must be one or greater, currently supporting up to a value of 6.
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#define N_COORDINATE_SYSTEM 1
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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.
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// NOTE: Increasing this parameter will help any resolution related issues, especially with machines
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// requiring very high accelerations and/or very fast feedrates. In general, this will reduce the
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// error between how the planner plans the motions and how the stepper program actually performs them.
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// However, at some point, the resolution can be high enough, where the errors related to numerical
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// round-off can be great enough to cause problems and/or it's too fast for the Arduino. The correct
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// value for this parameter is machine dependent, so it's advised to set this only as high as needed.
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// Approximate successful values can range from 30L to 100L or more.
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#define ACCELERATION_TICKS_PER_SECOND 60L
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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. Sets the absolute minimum stepper rate in the stepper program and never runs
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// slower than this value, except when sleeping. This parameter overrides the minimum planner speed.
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// This is primarily used to guarantee that the end of a movement is always reached and not stop to
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// never reach its target. This parameter should always be greater than zero.
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#define MINIMUM_STEPS_PER_MINUTE 800 // (steps/min) - Integer value only
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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 25 // Integer (1-255)
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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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// 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_CYCLE 2 // Integer (1-128)
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// ---------------------------------------------------------------------------------------
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// FOR ADVANCED USERS ONLY:
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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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// Creates a delay between the direction pin setting and corresponding step pulse by creating
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// another interrupt (Timer2 compare) to manage it. The main Grbl interrupt (Timer1 compare)
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// sets the direction pins, and does not immediately set the stepper pins, as it would in
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// normal operation. The Timer2 compare fires next to set the stepper pins after the step
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// pulse delay time, and Timer2 overflow will complete the step pulse, except now delayed
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// by the step pulse time plus the step pulse delay. (Thanks langwadt for the idea!)
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// This is an experimental feature that should only be used if your setup requires a longer
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// delay between direction and step pin settings (some opto coupler based drivers), as it may
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// adversely effect Grbl's high-end performance (>10kHz). Please notify Grbl administrators
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// of your successes or difficulties, as we will monitor this and possibly integrate this as a
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// standard feature for future releases. However, we suggest to first try our direction delay
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// hack/solution posted in the Wiki involving inverting the stepper pin mask.
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// NOTE: Uncomment to enable. The recommended delay should be > 3us and the total step pulse
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// time, which includes the Grbl settings pulse microseconds, should not exceed 127us.
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// #define STEP_PULSE_DELAY 5 // Step pulse delay in microseconds. Default disabled.
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// ---------------------------------------------------------------------------------------
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// TODO: The following options are set as compile-time options for now, until the next EEPROM
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// settings version has solidified. This is to prevent having to support dozens of different
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// incremental settings versions.
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#define BLOCK_DELETE_ENABLE 0 // Block delete enable/disable flag during g-code parsing
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// This parameter sets the delay time before disabling the steppers after the final block of movement.
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// A short delay ensures the steppers come to a complete stop and the residual inertial force in the
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// CNC axes don't cause the axes to drift off position. This is particularly important when manually
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// entering g-code into grbl, i.e. locating part zero or simple manual machining. If the axes drift,
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// grbl has no way to know this has happened, since stepper motors are open-loop control. Depending
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// on the machine, this parameter may need to be larger or smaller than the default time.
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// NOTE: If the define commented, the stepper lock will be disabled upon compiling.
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// -> NOW INSTALLED IN SETTINGS #define STEPPER_IDLE_LOCK_TIME 25 // (milliseconds) - Integer > 0
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#endif
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