grbl-LPC-CoreXY/spindle_control.h
Sonny Jeon 8b5f306851 Cleaned up variable spindle output (PWM). Code and config comments.
- Variable spindle speed output as a configuration option. Thanks
@EliteEng! When enabled, the Z-limit (D11) and spindle enable(D12) pins
switch to allow access to the hardware PWM output on pin D11.
Otherwise, everything should work as it does.

- Removed option for inverting the spindle and coolant enable pins.
This is a safety hazard, especially for the spindle. When Grbl
initializes, all pins are momentarily low until it finishes booting. If
an invert is enabled, this means the spindles can be energized briefly
during this time. If users need signal inversion, it’s recommended to
just wire in an inversion circuit instead.

- Cleared out references to spindle variable output in terms of step
signal. This isn’t complete and requires more deliberation before
installing.

- Cleared up and cleaned up some code and config comments.
2014-01-04 12:12:44 -07:00

37 lines
1.1 KiB
C

/*
spindle_control.h - spindle control methods
Part of Grbl
Copyright (c) 2012-2014 Sungeun K. Jeon
Copyright (c) 2009-2011 Simen Svale Skogsrud
Grbl is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Grbl is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Grbl. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef spindle_control_h
#define spindle_control_h
#include <avr/io.h>
// Initializes spindle pins and hardware PWM, if enabled.
void spindle_init();
// Sets spindle direction and spindle rpm via PWM, if enabled.
void spindle_run(int8_t direction, uint16_t rpm);
// Kills spindle.
void spindle_stop();
#endif