Initial v0.8 ALPHA commit. Features multi-tasking run-time command execution (feed hold, cycle start, reset, status query). Extensive re-structuring of code for future features.
- ALPHA status. - Multitasking ability with run-time command executions for real-time control and feedback. - Decelerating feed hold and resume during operation. - System abort/reset, which immediately kills all movement and re-initializes grbl. - Re-structured grbl to easily allow for new features: Status reporting, jogging, backlash compensation. (To be completed in the following releases.) - Resized TX/RX serial buffers (32/128 bytes) - Increased planner buffer size to 20 blocks. - Updated documentation.
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50
config.h
50
config.h
@ -26,9 +26,7 @@
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#define BAUD_RATE 9600
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// Updated default pin-assignments from 0.6 onwards
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// (see bottom of file for a copy of the old config)
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// Define pin-assignments
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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
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@ -56,6 +54,16 @@
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#define SPINDLE_DIRECTION_PORT PORTB
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#define SPINDLE_DIRECTION_BIT 5
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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.
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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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@ -94,33 +102,11 @@
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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 (milliseconds)
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#endif
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// Pin-assignments from Grbl 0.5
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// #define STEPPERS_DISABLE_DDR DDRD
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// #define STEPPERS_DISABLE_PORT PORTD
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// #define STEPPERS_DISABLE_BIT 2
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//
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// #define STEPPING_DDR DDRC
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// #define STEPPING_PORT PORTC
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// #define X_STEP_BIT 0
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// #define Y_STEP_BIT 1
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// #define Z_STEP_BIT 2
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// #define X_DIRECTION_BIT 3
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// #define Y_DIRECTION_BIT 4
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// #define Z_DIRECTION_BIT 5
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//
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// #define LIMIT_DDR DDRD
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// #define LIMIT_PORT PORTD
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// #define X_LIMIT_BIT 3
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// #define Y_LIMIT_BIT 4
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// #define Z_LIMIT_BIT 5
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//
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// #define SPINDLE_ENABLE_DDR DDRD
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// #define SPINDLE_ENABLE_PORT PORTD
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// #define SPINDLE_ENABLE_BIT 6
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//
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// #define SPINDLE_DIRECTION_DDR DDRD
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// #define SPINDLE_DIRECTION_PORT PORTD
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// #define SPINDLE_DIRECTION_BIT 7
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