/*
  spindle_control.h - spindle control methods
  Part of Grbl

  Copyright (c) 2012-2016 Sungeun K. Jeon for Gnea Research LLC
  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


// Initializes spindle pins and hardware PWM, if enabled.
void spindle_init();

// Called by g-code parser when setting spindle state and requires a buffer sync.
void spindle_run(uint8_t direction, float rpm);

// Immediately sets spindle running state with direction and spindle rpm via PWM, if enabled.
// Called by spindle_run() after sync and parking motion/spindle stop override during restore.
void spindle_set_state(uint8_t state, uint8_t pwm_value);

// Stop and start spindle routines. Called by all spindle routines and stepper ISR.
inline void spindle_stop();
inline void spindle_set_speed(uint8_t pwm_value); // Variable spindle only.

uint8_t spindle_compute_pwm_value(float rpm); // 328p PWM register is 8-bit. Variable spindle only.


#endif