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/*
stepper.h - stepper motor driver: executes motion plans of planner.c using the stepper motors
Part of Grbl
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 stepper_h
#define stepper_h
#include "planner.h"
#if EXTRUDERS > 2
#define WRITE_E_STEP(v) { if(current_block->active_extruder == 2) { WRITE(E2_STEP_PIN, v); } else { if(current_block->active_extruder == 1) { WRITE(E1_STEP_PIN, v); } else { WRITE(E0_STEP_PIN, v); }}}
#define NORM_E_DIR() { if(current_block->active_extruder == 2) { WRITE(E2_DIR_PIN, !INVERT_E2_DIR); } else { if(current_block->active_extruder == 1) { WRITE(E1_DIR_PIN, !INVERT_E1_DIR); } else { WRITE(E0_DIR_PIN, !INVERT_E0_DIR); }}}
#define REV_E_DIR() { if(current_block->active_extruder == 2) { WRITE(E2_DIR_PIN, INVERT_E2_DIR); } else { if(current_block->active_extruder == 1) { WRITE(E1_DIR_PIN, INVERT_E1_DIR); } else { WRITE(E0_DIR_PIN, INVERT_E0_DIR); }}}
#elif EXTRUDERS > 1
#define WRITE_E_STEP(v) { if(current_block->active_extruder == 1) { WRITE(E1_STEP_PIN, v); } else { WRITE(E0_STEP_PIN, v); }}
#define NORM_E_DIR() { if(current_block->active_extruder == 1) { WRITE(E1_DIR_PIN, !INVERT_E1_DIR); } else { WRITE(E0_DIR_PIN, !INVERT_E0_DIR); }}
#define REV_E_DIR() { if(current_block->active_extruder == 1) { WRITE(E1_DIR_PIN, INVERT_E1_DIR); } else { WRITE(E0_DIR_PIN, INVERT_E0_DIR); }}
#else
#define WRITE_E_STEP(v) WRITE(E0_STEP_PIN, v)
#define NORM_E_DIR() WRITE(E0_DIR_PIN, !INVERT_E0_DIR)
#define REV_E_DIR() WRITE(E0_DIR_PIN, INVERT_E0_DIR)
#endif
#ifdef ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
extern bool abort_on_endstop_hit;
#endif
// Initialize and start the stepper motor subsystem
void st_init();
// Block until all buffered steps are executed
void st_synchronize();
// Set current position in steps
void st_set_position(const long &x, const long &y, const long &z, const long &e);
void st_set_e_position(const long &e);
// Get current position in steps
long st_get_position(uint8_t axis);
// Get current x and y position in steps
void st_get_position_xy(long &x, long &y);
// Get current position in mm
float st_get_position_mm(uint8_t axis);
// The stepper subsystem goes to sleep when it runs out of things to execute. Call this
// to notify the subsystem that it is time to go to work.
void st_wake_up();
void checkHitEndstops(); //call from somewhere to create an serial error message with the locations the endstops where hit, in case they were triggered
bool endstops_hit_on_purpose(); //avoid creation of the message, i.e. after homing and before a routine call of checkHitEndstops();
bool endstop_z_hit_on_purpose();
bool enable_endstops(bool check); // Enable/disable endstop checking. Return the old value.
bool enable_z_endstop(bool check);
void checkStepperErrors(); //Print errors detected by the stepper
void finishAndDisableSteppers();
extern block_t *current_block; // A pointer to the block currently being traced
void quickStop();
void digitalPotWrite(int address, int value);
void microstep_ms(uint8_t driver, int8_t ms1, int8_t ms2);
void microstep_mode(uint8_t driver, uint8_t stepping);
void digipot_init();
void digipot_current(uint8_t driver, int current);
void microstep_init();
void microstep_readings();
static void check_fans();
#ifdef BABYSTEPPING
void babystep(const uint8_t axis,const bool direction); // perform a short step with a single stepper motor, outside of any convention
#endif
#endif
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