d27dd13a54
- Fixed a premature step end bug dating back to Simen's 0.7b edge version is fixed, from which this code is forked from. Caused by Timer2 constantly overflowing calling the Step Reset Interrupt every 128usec. Now Timer2 is always disabled after a step end and should free up some cycles for the main program. Could be more than one way to fix this problem. I'm open to suggestions. - _delay_ms() refactored to accept only constants to comply with current compilers. square() removed since not available with some compilers.
130 lines
6.4 KiB
C
130 lines
6.4 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 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 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 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 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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// 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 commented out, the delay will not be compiled.
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#define STEPPER_IDLE_LOCK_TIME 25 // (milliseconds) - Integer > 0
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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 50L
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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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// -----------------------------------------------
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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.
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#define CYCLE_AUTO_START 1 // Cycle auto-start boolean flag for the planner.
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#define BLOCK_DELETE_ENABLE 0 // Block delete enable/disable flag during g-code parsing
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#define REPORT_INCH_MODE 0 // Status reporting unit mode (1 = inch, 0 = mm)
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#if REPORT_INCH_MODE
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#define DECIMAL_PLACES 3
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#define DECIMAL_MULTIPLIER 1000 // 10^DECIMAL_PLACES
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#else
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#define DECIMAL_PLACES 2 // mm-mode
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#define DECIMAL_MULTIPLIER 100
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#endif
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#endif
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