1364 lines
40 KiB
C++
1364 lines
40 KiB
C++
/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program 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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*
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* This program 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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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/**
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* stepper.cpp - A singleton object to execute motion plans using stepper motors
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* Marlin Firmware
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*
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* Derived from Grbl
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* Copyright (c) 2009-2011 Simen Svale Skogsrud
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*
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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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*
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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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*
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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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/* The timer calculations of this module informed by the 'RepRap cartesian firmware' by Zack Smith
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and Philipp Tiefenbacher. */
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#include "Marlin.h"
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#include "stepper.h"
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#include "endstops.h"
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#include "planner.h"
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#include "temperature.h"
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#include "ultralcd.h"
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#include "language.h"
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#include "cardreader.h"
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#include "speed_lookuptable.h"
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#if HAS_DIGIPOTSS
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#include <SPI.h>
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#endif
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Stepper stepper; // Singleton
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// public:
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block_t* Stepper::current_block = NULL; // A pointer to the block currently being traced
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#if ENABLED(ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED)
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bool Stepper::abort_on_endstop_hit = false;
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#endif
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#if ENABLED(Z_DUAL_ENDSTOPS)
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bool Stepper::performing_homing = false;
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#endif
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// private:
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unsigned char Stepper::last_direction_bits = 0; // The next stepping-bits to be output
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unsigned int Stepper::cleaning_buffer_counter = 0;
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#if ENABLED(Z_DUAL_ENDSTOPS)
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bool Stepper::locked_z_motor = false;
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bool Stepper::locked_z2_motor = false;
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#endif
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long Stepper::counter_X = 0,
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Stepper::counter_Y = 0,
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Stepper::counter_Z = 0,
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Stepper::counter_E = 0;
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volatile uint32_t Stepper::step_events_completed = 0; // The number of step events executed in the current block
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#if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
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unsigned char Stepper::old_OCR0A = 0;
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volatile unsigned char Stepper::eISR_Rate = 200; // Keep the ISR at a low rate until needed
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#if ENABLED(LIN_ADVANCE)
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volatile int Stepper::e_steps[E_STEPPERS];
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int Stepper::extruder_advance_k = LIN_ADVANCE_K,
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Stepper::final_estep_rate,
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Stepper::current_estep_rate[E_STEPPERS],
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Stepper::current_adv_steps[E_STEPPERS];
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#else
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long Stepper::e_steps[E_STEPPERS],
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Stepper::final_advance = 0,
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Stepper::old_advance = 0,
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Stepper::advance_rate,
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Stepper::advance;
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#endif
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#endif
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long Stepper::acceleration_time, Stepper::deceleration_time;
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volatile long Stepper::count_position[NUM_AXIS] = { 0 };
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volatile signed char Stepper::count_direction[NUM_AXIS] = { 1, 1, 1, 1 };
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#if ENABLED(MIXING_EXTRUDER)
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long Stepper::counter_m[MIXING_STEPPERS];
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#endif
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unsigned short Stepper::acc_step_rate; // needed for deceleration start point
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uint8_t Stepper::step_loops, Stepper::step_loops_nominal;
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unsigned short Stepper::OCR1A_nominal;
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volatile long Stepper::endstops_trigsteps[XYZ];
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#if ENABLED(X_DUAL_STEPPER_DRIVERS)
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#define X_APPLY_DIR(v,Q) do{ X_DIR_WRITE(v); X2_DIR_WRITE((v) != INVERT_X2_VS_X_DIR); }while(0)
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#define X_APPLY_STEP(v,Q) do{ X_STEP_WRITE(v); X2_STEP_WRITE(v); }while(0)
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#elif ENABLED(DUAL_X_CARRIAGE)
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#define X_APPLY_DIR(v,ALWAYS) \
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if (extruder_duplication_enabled || ALWAYS) { \
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X_DIR_WRITE(v); \
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X2_DIR_WRITE(v); \
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} \
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else { \
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if (current_block->active_extruder) X2_DIR_WRITE(v); else X_DIR_WRITE(v); \
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}
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#define X_APPLY_STEP(v,ALWAYS) \
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if (extruder_duplication_enabled || ALWAYS) { \
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X_STEP_WRITE(v); \
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X2_STEP_WRITE(v); \
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} \
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else { \
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if (current_block->active_extruder != 0) X2_STEP_WRITE(v); else X_STEP_WRITE(v); \
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}
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#else
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#define X_APPLY_DIR(v,Q) X_DIR_WRITE(v)
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#define X_APPLY_STEP(v,Q) X_STEP_WRITE(v)
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#endif
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#if ENABLED(Y_DUAL_STEPPER_DRIVERS)
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#define Y_APPLY_DIR(v,Q) do{ Y_DIR_WRITE(v); Y2_DIR_WRITE((v) != INVERT_Y2_VS_Y_DIR); }while(0)
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#define Y_APPLY_STEP(v,Q) do{ Y_STEP_WRITE(v); Y2_STEP_WRITE(v); }while(0)
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#else
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#define Y_APPLY_DIR(v,Q) Y_DIR_WRITE(v)
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#define Y_APPLY_STEP(v,Q) Y_STEP_WRITE(v)
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#endif
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#if ENABLED(Z_DUAL_STEPPER_DRIVERS)
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#define Z_APPLY_DIR(v,Q) do{ Z_DIR_WRITE(v); Z2_DIR_WRITE(v); }while(0)
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#if ENABLED(Z_DUAL_ENDSTOPS)
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#define Z_APPLY_STEP(v,Q) \
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if (performing_homing) { \
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if (Z_HOME_DIR > 0) {\
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if (!(TEST(endstops.old_endstop_bits, Z_MAX) && (count_direction[Z_AXIS] > 0)) && !locked_z_motor) Z_STEP_WRITE(v); \
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if (!(TEST(endstops.old_endstop_bits, Z2_MAX) && (count_direction[Z_AXIS] > 0)) && !locked_z2_motor) Z2_STEP_WRITE(v); \
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} \
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else { \
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if (!(TEST(endstops.old_endstop_bits, Z_MIN) && (count_direction[Z_AXIS] < 0)) && !locked_z_motor) Z_STEP_WRITE(v); \
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if (!(TEST(endstops.old_endstop_bits, Z2_MIN) && (count_direction[Z_AXIS] < 0)) && !locked_z2_motor) Z2_STEP_WRITE(v); \
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} \
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} \
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else { \
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Z_STEP_WRITE(v); \
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Z2_STEP_WRITE(v); \
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}
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#else
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#define Z_APPLY_STEP(v,Q) do{ Z_STEP_WRITE(v); Z2_STEP_WRITE(v); }while(0)
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#endif
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#else
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#define Z_APPLY_DIR(v,Q) Z_DIR_WRITE(v)
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#define Z_APPLY_STEP(v,Q) Z_STEP_WRITE(v)
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#endif
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#if DISABLED(MIXING_EXTRUDER)
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#define E_APPLY_STEP(v,Q) E_STEP_WRITE(v)
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#endif
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// intRes = longIn1 * longIn2 >> 24
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// uses:
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// r26 to store 0
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// r27 to store bits 16-23 of the 48bit result. The top bit is used to round the two byte result.
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// note that the lower two bytes and the upper byte of the 48bit result are not calculated.
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// this can cause the result to be out by one as the lower bytes may cause carries into the upper ones.
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// B0 A0 are bits 24-39 and are the returned value
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// C1 B1 A1 is longIn1
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// D2 C2 B2 A2 is longIn2
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//
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#define MultiU24X32toH16(intRes, longIn1, longIn2) \
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asm volatile ( \
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"clr r26 \n\t" \
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"mul %A1, %B2 \n\t" \
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"mov r27, r1 \n\t" \
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"mul %B1, %C2 \n\t" \
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"movw %A0, r0 \n\t" \
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"mul %C1, %C2 \n\t" \
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"add %B0, r0 \n\t" \
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"mul %C1, %B2 \n\t" \
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"add %A0, r0 \n\t" \
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"adc %B0, r1 \n\t" \
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"mul %A1, %C2 \n\t" \
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"add r27, r0 \n\t" \
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"adc %A0, r1 \n\t" \
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"adc %B0, r26 \n\t" \
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"mul %B1, %B2 \n\t" \
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"add r27, r0 \n\t" \
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"adc %A0, r1 \n\t" \
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"adc %B0, r26 \n\t" \
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"mul %C1, %A2 \n\t" \
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"add r27, r0 \n\t" \
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"adc %A0, r1 \n\t" \
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"adc %B0, r26 \n\t" \
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"mul %B1, %A2 \n\t" \
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"add r27, r1 \n\t" \
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"adc %A0, r26 \n\t" \
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"adc %B0, r26 \n\t" \
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"lsr r27 \n\t" \
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"adc %A0, r26 \n\t" \
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"adc %B0, r26 \n\t" \
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"mul %D2, %A1 \n\t" \
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"add %A0, r0 \n\t" \
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"adc %B0, r1 \n\t" \
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"mul %D2, %B1 \n\t" \
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"add %B0, r0 \n\t" \
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"clr r1 \n\t" \
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: \
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"=&r" (intRes) \
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: \
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"d" (longIn1), \
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"d" (longIn2) \
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: \
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"r26" , "r27" \
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)
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// Some useful constants
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#define ENABLE_STEPPER_DRIVER_INTERRUPT() SBI(TIMSK1, OCIE1A)
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#define DISABLE_STEPPER_DRIVER_INTERRUPT() CBI(TIMSK1, OCIE1A)
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/**
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* __________________________
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* /| |\ _________________ ^
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* / | | \ /| |\ |
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* / | | \ / | | \ s
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* / | | | | | \ p
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* / | | | | | \ e
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* +-----+------------------------+---+--+---------------+----+ e
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* | BLOCK 1 | BLOCK 2 | d
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*
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* time ----->
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*
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* The trapezoid is the shape the speed curve over time. It starts at block->initial_rate, accelerates
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* first block->accelerate_until step_events_completed, then keeps going at constant speed until
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* step_events_completed reaches block->decelerate_after after which it decelerates until the trapezoid generator is reset.
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* The slope of acceleration is calculated using v = u + at where t is the accumulated timer values of the steps so far.
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*/
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void Stepper::wake_up() {
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// TCNT1 = 0;
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ENABLE_STEPPER_DRIVER_INTERRUPT();
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}
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/**
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* Set the stepper direction of each axis
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*
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* COREXY: X_AXIS=A_AXIS and Y_AXIS=B_AXIS
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* COREXZ: X_AXIS=A_AXIS and Z_AXIS=C_AXIS
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* COREYZ: Y_AXIS=B_AXIS and Z_AXIS=C_AXIS
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*/
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void Stepper::set_directions() {
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#define SET_STEP_DIR(AXIS) \
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if (motor_direction(AXIS ##_AXIS)) { \
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AXIS ##_APPLY_DIR(INVERT_## AXIS ##_DIR, false); \
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count_direction[AXIS ##_AXIS] = -1; \
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} \
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else { \
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AXIS ##_APPLY_DIR(!INVERT_## AXIS ##_DIR, false); \
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count_direction[AXIS ##_AXIS] = 1; \
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}
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#if HAS_X_DIR
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SET_STEP_DIR(X); // A
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#endif
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#if HAS_Y_DIR
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SET_STEP_DIR(Y); // B
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#endif
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#if HAS_Z_DIR
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SET_STEP_DIR(Z); // C
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#endif
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#if DISABLED(ADVANCE) && DISABLED(LIN_ADVANCE)
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if (motor_direction(E_AXIS)) {
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REV_E_DIR();
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count_direction[E_AXIS] = -1;
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}
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else {
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NORM_E_DIR();
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count_direction[E_AXIS] = 1;
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}
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#endif // !ADVANCE && !LIN_ADVANCE
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}
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/**
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* Stepper Driver Interrupt
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*
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* Directly pulses the stepper motors at high frequency.
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* Timer 1 runs at a base frequency of 2MHz, with this ISR using OCR1A compare mode.
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*
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* OCR1A Frequency
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* 1 2 MHz
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* 50 40 KHz
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* 100 20 KHz - capped max rate
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* 200 10 KHz - nominal max rate
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* 2000 1 KHz - sleep rate
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* 4000 500 Hz - init rate
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*/
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ISR(TIMER1_COMPA_vect) { Stepper::isr(); }
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void Stepper::isr() {
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if (cleaning_buffer_counter) {
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current_block = NULL;
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planner.discard_current_block();
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#ifdef SD_FINISHED_RELEASECOMMAND
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if ((cleaning_buffer_counter == 1) && (SD_FINISHED_STEPPERRELEASE)) enqueue_and_echo_commands_P(PSTR(SD_FINISHED_RELEASECOMMAND));
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#endif
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cleaning_buffer_counter--;
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OCR1A = 200; // Run at max speed - 10 KHz
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return;
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}
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// If there is no current block, attempt to pop one from the buffer
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if (!current_block) {
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// Anything in the buffer?
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current_block = planner.get_current_block();
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if (current_block) {
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current_block->busy = true;
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trapezoid_generator_reset();
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// Initialize Bresenham counters to 1/2 the ceiling
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counter_X = counter_Y = counter_Z = counter_E = -(current_block->step_event_count >> 1);
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#if ENABLED(MIXING_EXTRUDER)
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MIXING_STEPPERS_LOOP(i)
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counter_m[i] = -(current_block->mix_event_count[i] >> 1);
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#endif
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step_events_completed = 0;
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#if ENABLED(Z_LATE_ENABLE)
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if (current_block->steps[Z_AXIS] > 0) {
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enable_z();
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OCR1A = 2000; // Run at slow speed - 1 KHz
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return;
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}
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#endif
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// #if ENABLED(ADVANCE)
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// e_steps[TOOL_E_INDEX] = 0;
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// #endif
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}
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else {
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OCR1A = 2000; // Run at slow speed - 1 KHz
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return;
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}
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}
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// Update endstops state, if enabled
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if (endstops.enabled
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#if HAS_BED_PROBE
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|| endstops.z_probe_enabled
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#endif
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) endstops.update();
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// Take multiple steps per interrupt (For high speed moves)
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bool all_steps_done = false;
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for (int8_t i = 0; i < step_loops; i++) {
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#ifndef USBCON
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customizedSerial.checkRx(); // Check for serial chars.
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#endif
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#if ENABLED(LIN_ADVANCE)
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counter_E += current_block->steps[E_AXIS];
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if (counter_E > 0) {
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counter_E -= current_block->step_event_count;
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#if DISABLED(MIXING_EXTRUDER)
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// Don't step E here for mixing extruder
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count_position[E_AXIS] += count_direction[E_AXIS];
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motor_direction(E_AXIS) ? --e_steps[TOOL_E_INDEX] : ++e_steps[TOOL_E_INDEX];
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#endif
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}
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#if ENABLED(MIXING_EXTRUDER)
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// Step mixing steppers proportionally
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const bool dir = motor_direction(E_AXIS);
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MIXING_STEPPERS_LOOP(j) {
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counter_m[j] += current_block->steps[E_AXIS];
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if (counter_m[j] > 0) {
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counter_m[j] -= current_block->mix_event_count[j];
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dir ? --e_steps[j] : ++e_steps[j];
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}
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}
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#endif
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#elif ENABLED(ADVANCE)
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// Always count the unified E axis
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counter_E += current_block->steps[E_AXIS];
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if (counter_E > 0) {
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counter_E -= current_block->step_event_count;
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#if DISABLED(MIXING_EXTRUDER)
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// Don't step E here for mixing extruder
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motor_direction(E_AXIS) ? --e_steps[TOOL_E_INDEX] : ++e_steps[TOOL_E_INDEX];
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#endif
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}
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#if ENABLED(MIXING_EXTRUDER)
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// Step mixing steppers proportionally
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const bool dir = motor_direction(E_AXIS);
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MIXING_STEPPERS_LOOP(j) {
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counter_m[j] += current_block->steps[E_AXIS];
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if (counter_m[j] > 0) {
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counter_m[j] -= current_block->mix_event_count[j];
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dir ? --e_steps[j] : ++e_steps[j];
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}
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}
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#endif // MIXING_EXTRUDER
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#endif // ADVANCE or LIN_ADVANCE
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#define _COUNTER(AXIS) counter_## AXIS
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#define _APPLY_STEP(AXIS) AXIS ##_APPLY_STEP
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#define _INVERT_STEP_PIN(AXIS) INVERT_## AXIS ##_STEP_PIN
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// Advance the Bresenham counter; start a pulse if the axis needs a step
|
|
#define PULSE_START(AXIS) \
|
|
_COUNTER(AXIS) += current_block->steps[_AXIS(AXIS)]; \
|
|
if (_COUNTER(AXIS) > 0) { _APPLY_STEP(AXIS)(!_INVERT_STEP_PIN(AXIS),0); }
|
|
|
|
// Stop an active pulse, reset the Bresenham counter, update the position
|
|
#define PULSE_STOP(AXIS) \
|
|
if (_COUNTER(AXIS) > 0) { \
|
|
_COUNTER(AXIS) -= current_block->step_event_count; \
|
|
count_position[_AXIS(AXIS)] += count_direction[_AXIS(AXIS)]; \
|
|
_APPLY_STEP(AXIS)(_INVERT_STEP_PIN(AXIS),0); \
|
|
}
|
|
|
|
#define CYCLES_EATEN_BY_CODE 240
|
|
|
|
// If a minimum pulse time was specified get the CPU clock
|
|
#if STEP_PULSE_CYCLES > CYCLES_EATEN_BY_CODE
|
|
static uint32_t pulse_start;
|
|
pulse_start = TCNT0;
|
|
#endif
|
|
|
|
#if HAS_X_STEP
|
|
PULSE_START(X);
|
|
#endif
|
|
#if HAS_Y_STEP
|
|
PULSE_START(Y);
|
|
#endif
|
|
#if HAS_Z_STEP
|
|
PULSE_START(Z);
|
|
#endif
|
|
|
|
// For non-advance use linear interpolation for E also
|
|
#if DISABLED(ADVANCE) && DISABLED(LIN_ADVANCE)
|
|
#if ENABLED(MIXING_EXTRUDER)
|
|
// Keep updating the single E axis
|
|
counter_E += current_block->steps[E_AXIS];
|
|
// Tick the counters used for this mix
|
|
MIXING_STEPPERS_LOOP(j) {
|
|
// Step mixing steppers (proportionally)
|
|
counter_m[j] += current_block->steps[E_AXIS];
|
|
// Step when the counter goes over zero
|
|
if (counter_m[j] > 0) En_STEP_WRITE(j, !INVERT_E_STEP_PIN);
|
|
}
|
|
#else // !MIXING_EXTRUDER
|
|
PULSE_START(E);
|
|
#endif
|
|
#endif // !ADVANCE && !LIN_ADVANCE
|
|
|
|
// For a minimum pulse time wait before stopping pulses
|
|
#if STEP_PULSE_CYCLES > CYCLES_EATEN_BY_CODE
|
|
while ((uint32_t)(TCNT0 - pulse_start) < STEP_PULSE_CYCLES - CYCLES_EATEN_BY_CODE) { /* nada */ }
|
|
#endif
|
|
|
|
#if HAS_X_STEP
|
|
PULSE_STOP(X);
|
|
#endif
|
|
#if HAS_Y_STEP
|
|
PULSE_STOP(Y);
|
|
#endif
|
|
#if HAS_Z_STEP
|
|
PULSE_STOP(Z);
|
|
#endif
|
|
|
|
#if DISABLED(ADVANCE) && DISABLED(LIN_ADVANCE)
|
|
#if ENABLED(MIXING_EXTRUDER)
|
|
// Always step the single E axis
|
|
if (counter_E > 0) {
|
|
counter_E -= current_block->step_event_count;
|
|
count_position[E_AXIS] += count_direction[E_AXIS];
|
|
}
|
|
MIXING_STEPPERS_LOOP(j) {
|
|
if (counter_m[j] > 0) {
|
|
counter_m[j] -= current_block->mix_event_count[j];
|
|
En_STEP_WRITE(j, INVERT_E_STEP_PIN);
|
|
}
|
|
}
|
|
#else // !MIXING_EXTRUDER
|
|
PULSE_STOP(E);
|
|
#endif
|
|
#endif // !ADVANCE && !LIN_ADVANCE
|
|
|
|
if (++step_events_completed >= current_block->step_event_count) {
|
|
all_steps_done = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
#if ENABLED(LIN_ADVANCE)
|
|
if (current_block->use_advance_lead) {
|
|
int delta_adv_steps = (((long)extruder_advance_k * current_estep_rate[TOOL_E_INDEX]) >> 9) - current_adv_steps[TOOL_E_INDEX];
|
|
current_adv_steps[TOOL_E_INDEX] += delta_adv_steps;
|
|
#if ENABLED(MIXING_EXTRUDER)
|
|
// Mixing extruders apply advance lead proportionally
|
|
MIXING_STEPPERS_LOOP(j)
|
|
e_steps[j] += delta_adv_steps * current_block->step_event_count / current_block->mix_event_count[j];
|
|
#else
|
|
// For most extruders, advance the single E stepper
|
|
e_steps[TOOL_E_INDEX] += delta_adv_steps;
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
|
|
// If we have esteps to execute, fire the next advance_isr "now"
|
|
if (e_steps[TOOL_E_INDEX]) OCR0A = TCNT0 + 2;
|
|
#endif
|
|
|
|
// Calculate new timer value
|
|
uint16_t timer, step_rate;
|
|
if (step_events_completed <= (uint32_t)current_block->accelerate_until) {
|
|
|
|
MultiU24X32toH16(acc_step_rate, acceleration_time, current_block->acceleration_rate);
|
|
acc_step_rate += current_block->initial_rate;
|
|
|
|
// upper limit
|
|
NOMORE(acc_step_rate, current_block->nominal_rate);
|
|
|
|
// step_rate to timer interval
|
|
timer = calc_timer(acc_step_rate);
|
|
OCR1A = timer;
|
|
acceleration_time += timer;
|
|
|
|
#if ENABLED(LIN_ADVANCE)
|
|
|
|
if (current_block->use_advance_lead) {
|
|
#if ENABLED(MIXING_EXTRUDER)
|
|
MIXING_STEPPERS_LOOP(j)
|
|
current_estep_rate[j] = ((uint32_t)acc_step_rate * current_block->e_speed_multiplier8 * current_block->step_event_count / current_block->mix_event_count[j]) >> 8;
|
|
#else
|
|
current_estep_rate[TOOL_E_INDEX] = ((uint32_t)acc_step_rate * current_block->e_speed_multiplier8) >> 8;
|
|
#endif
|
|
}
|
|
|
|
#elif ENABLED(ADVANCE)
|
|
|
|
advance += advance_rate * step_loops;
|
|
//NOLESS(advance, current_block->advance);
|
|
|
|
long advance_whole = advance >> 8,
|
|
advance_factor = advance_whole - old_advance;
|
|
|
|
// Do E steps + advance steps
|
|
#if ENABLED(MIXING_EXTRUDER)
|
|
// ...for mixing steppers proportionally
|
|
MIXING_STEPPERS_LOOP(j)
|
|
e_steps[j] += advance_factor * current_block->step_event_count / current_block->mix_event_count[j];
|
|
#else
|
|
// ...for the active extruder
|
|
e_steps[TOOL_E_INDEX] += advance_factor;
|
|
#endif
|
|
|
|
old_advance = advance_whole;
|
|
|
|
#endif // ADVANCE or LIN_ADVANCE
|
|
|
|
#if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
|
|
eISR_Rate = (timer >> 3) * step_loops / abs(e_steps[TOOL_E_INDEX]); //>> 3 is divide by 8. Reason: Timer 1 runs at 16/8=2MHz, Timer 0 at 16/64=0.25MHz. ==> 2/0.25=8.
|
|
#endif
|
|
}
|
|
else if (step_events_completed > (uint32_t)current_block->decelerate_after) {
|
|
MultiU24X32toH16(step_rate, deceleration_time, current_block->acceleration_rate);
|
|
|
|
if (step_rate < acc_step_rate) { // Still decelerating?
|
|
step_rate = acc_step_rate - step_rate;
|
|
NOLESS(step_rate, current_block->final_rate);
|
|
}
|
|
else
|
|
step_rate = current_block->final_rate;
|
|
|
|
// step_rate to timer interval
|
|
timer = calc_timer(step_rate);
|
|
OCR1A = timer;
|
|
deceleration_time += timer;
|
|
|
|
#if ENABLED(LIN_ADVANCE)
|
|
|
|
if (current_block->use_advance_lead) {
|
|
#if ENABLED(MIXING_EXTRUDER)
|
|
MIXING_STEPPERS_LOOP(j)
|
|
current_estep_rate[j] = ((uint32_t)step_rate * current_block->e_speed_multiplier8 * current_block->step_event_count / current_block->mix_event_count[j]) >> 8;
|
|
#else
|
|
current_estep_rate[TOOL_E_INDEX] = ((uint32_t)step_rate * current_block->e_speed_multiplier8) >> 8;
|
|
#endif
|
|
}
|
|
|
|
#elif ENABLED(ADVANCE)
|
|
|
|
advance -= advance_rate * step_loops;
|
|
NOLESS(advance, final_advance);
|
|
|
|
// Do E steps + advance steps
|
|
long advance_whole = advance >> 8,
|
|
advance_factor = advance_whole - old_advance;
|
|
|
|
#if ENABLED(MIXING_EXTRUDER)
|
|
MIXING_STEPPERS_LOOP(j)
|
|
e_steps[j] += advance_factor * current_block->step_event_count / current_block->mix_event_count[j];
|
|
#else
|
|
e_steps[TOOL_E_INDEX] += advance_factor;
|
|
#endif
|
|
|
|
old_advance = advance_whole;
|
|
|
|
#endif // ADVANCE or LIN_ADVANCE
|
|
|
|
#if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
|
|
eISR_Rate = (timer >> 3) * step_loops / abs(e_steps[TOOL_E_INDEX]);
|
|
#endif
|
|
}
|
|
else {
|
|
|
|
#if ENABLED(LIN_ADVANCE)
|
|
|
|
if (current_block->use_advance_lead)
|
|
current_estep_rate[TOOL_E_INDEX] = final_estep_rate;
|
|
|
|
eISR_Rate = (OCR1A_nominal >> 3) * step_loops_nominal / abs(e_steps[TOOL_E_INDEX]);
|
|
|
|
#endif
|
|
|
|
OCR1A = OCR1A_nominal;
|
|
// ensure we're running at the correct step rate, even if we just came off an acceleration
|
|
step_loops = step_loops_nominal;
|
|
}
|
|
|
|
NOLESS(OCR1A, TCNT1 + 16);
|
|
|
|
// If current block is finished, reset pointer
|
|
if (all_steps_done) {
|
|
current_block = NULL;
|
|
planner.discard_current_block();
|
|
}
|
|
}
|
|
|
|
#if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
|
|
|
|
// Timer interrupt for E. e_steps is set in the main routine;
|
|
// Timer 0 is shared with millies
|
|
ISR(TIMER0_COMPA_vect) { Stepper::advance_isr(); }
|
|
|
|
void Stepper::advance_isr() {
|
|
|
|
old_OCR0A += eISR_Rate;
|
|
OCR0A = old_OCR0A;
|
|
|
|
#define SET_E_STEP_DIR(INDEX) \
|
|
if (e_steps[INDEX]) E## INDEX ##_DIR_WRITE(e_steps[INDEX] < 0 ? INVERT_E## INDEX ##_DIR : !INVERT_E## INDEX ##_DIR)
|
|
|
|
#define START_E_PULSE(INDEX) \
|
|
if (e_steps[INDEX]) E## INDEX ##_STEP_WRITE(!INVERT_E_STEP_PIN)
|
|
|
|
#define STOP_E_PULSE(INDEX) \
|
|
if (e_steps[INDEX]) { \
|
|
e_steps[INDEX] < 0 ? ++e_steps[INDEX] : --e_steps[INDEX]; \
|
|
E## INDEX ##_STEP_WRITE(INVERT_E_STEP_PIN); \
|
|
}
|
|
|
|
SET_E_STEP_DIR(0);
|
|
#if E_STEPPERS > 1
|
|
SET_E_STEP_DIR(1);
|
|
#if E_STEPPERS > 2
|
|
SET_E_STEP_DIR(2);
|
|
#if E_STEPPERS > 3
|
|
SET_E_STEP_DIR(3);
|
|
#endif
|
|
#endif
|
|
#endif
|
|
|
|
#define CYCLES_EATEN_BY_E 60
|
|
|
|
// Step all E steppers that have steps
|
|
for (uint8_t i = 0; i < step_loops; i++) {
|
|
|
|
#if STEP_PULSE_CYCLES > CYCLES_EATEN_BY_E
|
|
static uint32_t pulse_start;
|
|
pulse_start = TCNT0;
|
|
#endif
|
|
|
|
START_E_PULSE(0);
|
|
#if E_STEPPERS > 1
|
|
START_E_PULSE(1);
|
|
#if E_STEPPERS > 2
|
|
START_E_PULSE(2);
|
|
#if E_STEPPERS > 3
|
|
START_E_PULSE(3);
|
|
#endif
|
|
#endif
|
|
#endif
|
|
|
|
// For a minimum pulse time wait before stopping pulses
|
|
#if STEP_PULSE_CYCLES > CYCLES_EATEN_BY_E
|
|
while ((uint32_t)(TCNT0 - pulse_start) < STEP_PULSE_CYCLES - CYCLES_EATEN_BY_E) { /* nada */ }
|
|
#endif
|
|
|
|
STOP_E_PULSE(0);
|
|
#if E_STEPPERS > 1
|
|
STOP_E_PULSE(1);
|
|
#if E_STEPPERS > 2
|
|
STOP_E_PULSE(2);
|
|
#if E_STEPPERS > 3
|
|
STOP_E_PULSE(3);
|
|
#endif
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
}
|
|
|
|
#endif // ADVANCE or LIN_ADVANCE
|
|
|
|
void Stepper::init() {
|
|
|
|
// Init Digipot Motor Current
|
|
#if HAS_DIGIPOTSS || HAS_MOTOR_CURRENT_PWM
|
|
digipot_init();
|
|
#endif
|
|
|
|
// Init Microstepping Pins
|
|
#if HAS_MICROSTEPS
|
|
microstep_init();
|
|
#endif
|
|
|
|
// Init TMC Steppers
|
|
#if ENABLED(HAVE_TMCDRIVER)
|
|
tmc_init();
|
|
#endif
|
|
|
|
// Init L6470 Steppers
|
|
#if ENABLED(HAVE_L6470DRIVER)
|
|
L6470_init();
|
|
#endif
|
|
|
|
// Init Dir Pins
|
|
#if HAS_X_DIR
|
|
X_DIR_INIT;
|
|
#endif
|
|
#if HAS_X2_DIR
|
|
X2_DIR_INIT;
|
|
#endif
|
|
#if HAS_Y_DIR
|
|
Y_DIR_INIT;
|
|
#if ENABLED(Y_DUAL_STEPPER_DRIVERS) && HAS_Y2_DIR
|
|
Y2_DIR_INIT;
|
|
#endif
|
|
#endif
|
|
#if HAS_Z_DIR
|
|
Z_DIR_INIT;
|
|
#if ENABLED(Z_DUAL_STEPPER_DRIVERS) && HAS_Z2_DIR
|
|
Z2_DIR_INIT;
|
|
#endif
|
|
#endif
|
|
#if HAS_E0_DIR
|
|
E0_DIR_INIT;
|
|
#endif
|
|
#if HAS_E1_DIR
|
|
E1_DIR_INIT;
|
|
#endif
|
|
#if HAS_E2_DIR
|
|
E2_DIR_INIT;
|
|
#endif
|
|
#if HAS_E3_DIR
|
|
E3_DIR_INIT;
|
|
#endif
|
|
|
|
// Init Enable Pins - steppers default to disabled.
|
|
#if HAS_X_ENABLE
|
|
X_ENABLE_INIT;
|
|
if (!X_ENABLE_ON) X_ENABLE_WRITE(HIGH);
|
|
#if ENABLED(DUAL_X_CARRIAGE) && HAS_X2_ENABLE
|
|
X2_ENABLE_INIT;
|
|
if (!X_ENABLE_ON) X2_ENABLE_WRITE(HIGH);
|
|
#endif
|
|
#endif
|
|
#if HAS_Y_ENABLE
|
|
Y_ENABLE_INIT;
|
|
if (!Y_ENABLE_ON) Y_ENABLE_WRITE(HIGH);
|
|
#if ENABLED(Y_DUAL_STEPPER_DRIVERS) && HAS_Y2_ENABLE
|
|
Y2_ENABLE_INIT;
|
|
if (!Y_ENABLE_ON) Y2_ENABLE_WRITE(HIGH);
|
|
#endif
|
|
#endif
|
|
#if HAS_Z_ENABLE
|
|
Z_ENABLE_INIT;
|
|
if (!Z_ENABLE_ON) Z_ENABLE_WRITE(HIGH);
|
|
#if ENABLED(Z_DUAL_STEPPER_DRIVERS) && HAS_Z2_ENABLE
|
|
Z2_ENABLE_INIT;
|
|
if (!Z_ENABLE_ON) Z2_ENABLE_WRITE(HIGH);
|
|
#endif
|
|
#endif
|
|
#if HAS_E0_ENABLE
|
|
E0_ENABLE_INIT;
|
|
if (!E_ENABLE_ON) E0_ENABLE_WRITE(HIGH);
|
|
#endif
|
|
#if HAS_E1_ENABLE
|
|
E1_ENABLE_INIT;
|
|
if (!E_ENABLE_ON) E1_ENABLE_WRITE(HIGH);
|
|
#endif
|
|
#if HAS_E2_ENABLE
|
|
E2_ENABLE_INIT;
|
|
if (!E_ENABLE_ON) E2_ENABLE_WRITE(HIGH);
|
|
#endif
|
|
#if HAS_E3_ENABLE
|
|
E3_ENABLE_INIT;
|
|
if (!E_ENABLE_ON) E3_ENABLE_WRITE(HIGH);
|
|
#endif
|
|
|
|
// Init endstops and pullups
|
|
endstops.init();
|
|
|
|
#define _STEP_INIT(AXIS) AXIS ##_STEP_INIT
|
|
#define _WRITE_STEP(AXIS, HIGHLOW) AXIS ##_STEP_WRITE(HIGHLOW)
|
|
#define _DISABLE(axis) disable_## axis()
|
|
|
|
#define AXIS_INIT(axis, AXIS, PIN) \
|
|
_STEP_INIT(AXIS); \
|
|
_WRITE_STEP(AXIS, _INVERT_STEP_PIN(PIN)); \
|
|
_DISABLE(axis)
|
|
|
|
#define E_AXIS_INIT(NUM) AXIS_INIT(e## NUM, E## NUM, E)
|
|
|
|
// Init Step Pins
|
|
#if HAS_X_STEP
|
|
#if ENABLED(X_DUAL_STEPPER_DRIVERS) || ENABLED(DUAL_X_CARRIAGE)
|
|
X2_STEP_INIT;
|
|
X2_STEP_WRITE(INVERT_X_STEP_PIN);
|
|
#endif
|
|
AXIS_INIT(x, X, X);
|
|
#endif
|
|
|
|
#if HAS_Y_STEP
|
|
#if ENABLED(Y_DUAL_STEPPER_DRIVERS)
|
|
Y2_STEP_INIT;
|
|
Y2_STEP_WRITE(INVERT_Y_STEP_PIN);
|
|
#endif
|
|
AXIS_INIT(y, Y, Y);
|
|
#endif
|
|
|
|
#if HAS_Z_STEP
|
|
#if ENABLED(Z_DUAL_STEPPER_DRIVERS)
|
|
Z2_STEP_INIT;
|
|
Z2_STEP_WRITE(INVERT_Z_STEP_PIN);
|
|
#endif
|
|
AXIS_INIT(z, Z, Z);
|
|
#endif
|
|
|
|
#if HAS_E0_STEP
|
|
E_AXIS_INIT(0);
|
|
#endif
|
|
#if HAS_E1_STEP
|
|
E_AXIS_INIT(1);
|
|
#endif
|
|
#if HAS_E2_STEP
|
|
E_AXIS_INIT(2);
|
|
#endif
|
|
#if HAS_E3_STEP
|
|
E_AXIS_INIT(3);
|
|
#endif
|
|
|
|
// waveform generation = 0100 = CTC
|
|
CBI(TCCR1B, WGM13);
|
|
SBI(TCCR1B, WGM12);
|
|
CBI(TCCR1A, WGM11);
|
|
CBI(TCCR1A, WGM10);
|
|
|
|
// output mode = 00 (disconnected)
|
|
TCCR1A &= ~(3 << COM1A0);
|
|
TCCR1A &= ~(3 << COM1B0);
|
|
|
|
// Set the timer pre-scaler
|
|
// Generally we use a divider of 8, resulting in a 2MHz timer
|
|
// frequency on a 16MHz MCU. If you are going to change this, be
|
|
// sure to regenerate speed_lookuptable.h with
|
|
// create_speed_lookuptable.py
|
|
TCCR1B = (TCCR1B & ~(0x07 << CS10)) | (2 << CS10);
|
|
|
|
// Init Stepper ISR to 122 Hz for quick starting
|
|
OCR1A = 0x4000;
|
|
TCNT1 = 0;
|
|
ENABLE_STEPPER_DRIVER_INTERRUPT();
|
|
|
|
#if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
|
|
|
|
for (int i = 0; i < E_STEPPERS; i++) {
|
|
e_steps[i] = 0;
|
|
#if ENABLED(LIN_ADVANCE)
|
|
current_adv_steps[i] = 0;
|
|
#endif
|
|
}
|
|
|
|
#if defined(TCCR0A) && defined(WGM01)
|
|
CBI(TCCR0A, WGM01);
|
|
CBI(TCCR0A, WGM00);
|
|
#endif
|
|
SBI(TIMSK0, OCIE0A);
|
|
|
|
#endif // ADVANCE or LIN_ADVANCE
|
|
|
|
endstops.enable(true); // Start with endstops active. After homing they can be disabled
|
|
sei();
|
|
|
|
set_directions(); // Init directions to last_direction_bits = 0
|
|
}
|
|
|
|
|
|
/**
|
|
* Block until all buffered steps are executed
|
|
*/
|
|
void Stepper::synchronize() { while (planner.blocks_queued()) idle(); }
|
|
|
|
/**
|
|
* Set the stepper positions directly in steps
|
|
*
|
|
* The input is based on the typical per-axis XYZ steps.
|
|
* For CORE machines XYZ needs to be translated to ABC.
|
|
*
|
|
* This allows get_axis_position_mm to correctly
|
|
* derive the current XYZ position later on.
|
|
*/
|
|
void Stepper::set_position(const long &a, const long &b, const long &c, const long &e) {
|
|
|
|
synchronize(); // Bad to set stepper counts in the middle of a move
|
|
|
|
CRITICAL_SECTION_START;
|
|
|
|
#if ENABLED(COREXY)
|
|
// corexy positioning
|
|
// these equations follow the form of the dA and dB equations on http://www.corexy.com/theory.html
|
|
count_position[A_AXIS] = a + b;
|
|
count_position[B_AXIS] = a - b;
|
|
count_position[Z_AXIS] = c;
|
|
#elif ENABLED(COREXZ)
|
|
// corexz planning
|
|
count_position[A_AXIS] = a + c;
|
|
count_position[Y_AXIS] = b;
|
|
count_position[C_AXIS] = a - c;
|
|
#elif ENABLED(COREYZ)
|
|
// coreyz planning
|
|
count_position[X_AXIS] = a;
|
|
count_position[B_AXIS] = y + c;
|
|
count_position[C_AXIS] = y - c;
|
|
#else
|
|
// default non-h-bot planning
|
|
count_position[X_AXIS] = a;
|
|
count_position[Y_AXIS] = b;
|
|
count_position[Z_AXIS] = c;
|
|
#endif
|
|
|
|
count_position[E_AXIS] = e;
|
|
CRITICAL_SECTION_END;
|
|
}
|
|
|
|
void Stepper::set_position(const AxisEnum &axis, const long &v) {
|
|
CRITICAL_SECTION_START;
|
|
count_position[axis] = v;
|
|
CRITICAL_SECTION_END;
|
|
}
|
|
|
|
void Stepper::set_e_position(const long &e) {
|
|
CRITICAL_SECTION_START;
|
|
count_position[E_AXIS] = e;
|
|
CRITICAL_SECTION_END;
|
|
}
|
|
|
|
/**
|
|
* Get a stepper's position in steps.
|
|
*/
|
|
long Stepper::position(AxisEnum axis) {
|
|
CRITICAL_SECTION_START;
|
|
long count_pos = count_position[axis];
|
|
CRITICAL_SECTION_END;
|
|
return count_pos;
|
|
}
|
|
|
|
/**
|
|
* Get an axis position according to stepper position(s)
|
|
* For CORE machines apply translation from ABC to XYZ.
|
|
*/
|
|
float Stepper::get_axis_position_mm(AxisEnum axis) {
|
|
float axis_steps;
|
|
#if ENABLED(COREXY) || ENABLED(COREXZ) || ENABLED(COREYZ)
|
|
// Requesting one of the "core" axes?
|
|
if (axis == CORE_AXIS_1 || axis == CORE_AXIS_2) {
|
|
CRITICAL_SECTION_START;
|
|
long pos1 = count_position[CORE_AXIS_1],
|
|
pos2 = count_position[CORE_AXIS_2];
|
|
CRITICAL_SECTION_END;
|
|
// ((a1+a2)+(a1-a2))/2 -> (a1+a2+a1-a2)/2 -> (a1+a1)/2 -> a1
|
|
// ((a1+a2)-(a1-a2))/2 -> (a1+a2-a1+a2)/2 -> (a2+a2)/2 -> a2
|
|
axis_steps = (pos1 + ((axis == CORE_AXIS_1) ? pos2 : -pos2)) * 0.5f;
|
|
}
|
|
else
|
|
axis_steps = position(axis);
|
|
#else
|
|
axis_steps = position(axis);
|
|
#endif
|
|
return axis_steps * planner.steps_to_mm[axis];
|
|
}
|
|
|
|
void Stepper::finish_and_disable() {
|
|
synchronize();
|
|
disable_all_steppers();
|
|
}
|
|
|
|
void Stepper::quick_stop() {
|
|
cleaning_buffer_counter = 5000;
|
|
DISABLE_STEPPER_DRIVER_INTERRUPT();
|
|
while (planner.blocks_queued()) planner.discard_current_block();
|
|
current_block = NULL;
|
|
ENABLE_STEPPER_DRIVER_INTERRUPT();
|
|
}
|
|
|
|
void Stepper::endstop_triggered(AxisEnum axis) {
|
|
|
|
#if ENABLED(COREXY) || ENABLED(COREXZ) || ENABLED(COREYZ)
|
|
|
|
float axis_pos = count_position[axis];
|
|
if (axis == CORE_AXIS_1)
|
|
axis_pos = (axis_pos + count_position[CORE_AXIS_2]) * 0.5;
|
|
else if (axis == CORE_AXIS_2)
|
|
axis_pos = (count_position[CORE_AXIS_1] - axis_pos) * 0.5;
|
|
endstops_trigsteps[axis] = axis_pos;
|
|
|
|
#else // !COREXY && !COREXZ && !COREYZ
|
|
|
|
endstops_trigsteps[axis] = count_position[axis];
|
|
|
|
#endif // !COREXY && !COREXZ && !COREYZ
|
|
|
|
kill_current_block();
|
|
}
|
|
|
|
void Stepper::report_positions() {
|
|
CRITICAL_SECTION_START;
|
|
long xpos = count_position[X_AXIS],
|
|
ypos = count_position[Y_AXIS],
|
|
zpos = count_position[Z_AXIS];
|
|
CRITICAL_SECTION_END;
|
|
|
|
#if ENABLED(COREXY) || ENABLED(COREXZ) || IS_SCARA
|
|
SERIAL_PROTOCOLPGM(MSG_COUNT_A);
|
|
#else
|
|
SERIAL_PROTOCOLPGM(MSG_COUNT_X);
|
|
#endif
|
|
SERIAL_PROTOCOL(xpos);
|
|
|
|
#if ENABLED(COREXY) || ENABLED(COREYZ) || IS_SCARA
|
|
SERIAL_PROTOCOLPGM(" B:");
|
|
#else
|
|
SERIAL_PROTOCOLPGM(" Y:");
|
|
#endif
|
|
SERIAL_PROTOCOL(ypos);
|
|
|
|
#if ENABLED(COREXZ) || ENABLED(COREYZ)
|
|
SERIAL_PROTOCOLPGM(" C:");
|
|
#else
|
|
SERIAL_PROTOCOLPGM(" Z:");
|
|
#endif
|
|
SERIAL_PROTOCOL(zpos);
|
|
|
|
SERIAL_EOL;
|
|
}
|
|
|
|
#if ENABLED(BABYSTEPPING)
|
|
|
|
// MUST ONLY BE CALLED BY AN ISR,
|
|
// No other ISR should ever interrupt this!
|
|
void Stepper::babystep(const uint8_t axis, const bool direction) {
|
|
|
|
#define _ENABLE(axis) enable_## axis()
|
|
#define _READ_DIR(AXIS) AXIS ##_DIR_READ
|
|
#define _INVERT_DIR(AXIS) INVERT_## AXIS ##_DIR
|
|
#define _APPLY_DIR(AXIS, INVERT) AXIS ##_APPLY_DIR(INVERT, true)
|
|
|
|
#define BABYSTEP_AXIS(axis, AXIS, INVERT) { \
|
|
_ENABLE(axis); \
|
|
uint8_t old_pin = _READ_DIR(AXIS); \
|
|
_APPLY_DIR(AXIS, _INVERT_DIR(AXIS)^direction^INVERT); \
|
|
_APPLY_STEP(AXIS)(!_INVERT_STEP_PIN(AXIS), true); \
|
|
delayMicroseconds(2); \
|
|
_APPLY_STEP(AXIS)(_INVERT_STEP_PIN(AXIS), true); \
|
|
_APPLY_DIR(AXIS, old_pin); \
|
|
}
|
|
|
|
switch (axis) {
|
|
|
|
case X_AXIS:
|
|
BABYSTEP_AXIS(x, X, false);
|
|
break;
|
|
|
|
case Y_AXIS:
|
|
BABYSTEP_AXIS(y, Y, false);
|
|
break;
|
|
|
|
case Z_AXIS: {
|
|
|
|
#if DISABLED(DELTA)
|
|
|
|
BABYSTEP_AXIS(z, Z, BABYSTEP_INVERT_Z);
|
|
|
|
#else // DELTA
|
|
|
|
bool z_direction = direction ^ BABYSTEP_INVERT_Z;
|
|
|
|
enable_x();
|
|
enable_y();
|
|
enable_z();
|
|
uint8_t old_x_dir_pin = X_DIR_READ,
|
|
old_y_dir_pin = Y_DIR_READ,
|
|
old_z_dir_pin = Z_DIR_READ;
|
|
//setup new step
|
|
X_DIR_WRITE(INVERT_X_DIR ^ z_direction);
|
|
Y_DIR_WRITE(INVERT_Y_DIR ^ z_direction);
|
|
Z_DIR_WRITE(INVERT_Z_DIR ^ z_direction);
|
|
//perform step
|
|
X_STEP_WRITE(!INVERT_X_STEP_PIN);
|
|
Y_STEP_WRITE(!INVERT_Y_STEP_PIN);
|
|
Z_STEP_WRITE(!INVERT_Z_STEP_PIN);
|
|
delayMicroseconds(2);
|
|
X_STEP_WRITE(INVERT_X_STEP_PIN);
|
|
Y_STEP_WRITE(INVERT_Y_STEP_PIN);
|
|
Z_STEP_WRITE(INVERT_Z_STEP_PIN);
|
|
//get old pin state back.
|
|
X_DIR_WRITE(old_x_dir_pin);
|
|
Y_DIR_WRITE(old_y_dir_pin);
|
|
Z_DIR_WRITE(old_z_dir_pin);
|
|
|
|
#endif
|
|
|
|
} break;
|
|
|
|
default: break;
|
|
}
|
|
}
|
|
|
|
#endif //BABYSTEPPING
|
|
|
|
/**
|
|
* Software-controlled Stepper Motor Current
|
|
*/
|
|
|
|
#if HAS_DIGIPOTSS
|
|
|
|
// From Arduino DigitalPotControl example
|
|
void Stepper::digitalPotWrite(int address, int value) {
|
|
WRITE(DIGIPOTSS_PIN, LOW); // take the SS pin low to select the chip
|
|
SPI.transfer(address); // send in the address and value via SPI:
|
|
SPI.transfer(value);
|
|
WRITE(DIGIPOTSS_PIN, HIGH); // take the SS pin high to de-select the chip:
|
|
//delay(10);
|
|
}
|
|
|
|
#endif //HAS_DIGIPOTSS
|
|
|
|
#if HAS_DIGIPOTSS || HAS_MOTOR_CURRENT_PWM
|
|
|
|
void Stepper::digipot_init() {
|
|
#if HAS_DIGIPOTSS
|
|
static const uint8_t digipot_motor_current[] = DIGIPOT_MOTOR_CURRENT;
|
|
SPI.begin();
|
|
SET_OUTPUT(DIGIPOTSS_PIN);
|
|
for (uint8_t i = 0; i < COUNT(digipot_motor_current); i++) {
|
|
//digitalPotWrite(digipot_ch[i], digipot_motor_current[i]);
|
|
digipot_current(i, digipot_motor_current[i]);
|
|
}
|
|
#elif HAS_MOTOR_CURRENT_PWM
|
|
#if PIN_EXISTS(MOTOR_CURRENT_PWM_XY)
|
|
SET_OUTPUT(MOTOR_CURRENT_PWM_XY_PIN);
|
|
digipot_current(0, motor_current_setting[0]);
|
|
#endif
|
|
#if PIN_EXISTS(MOTOR_CURRENT_PWM_Z)
|
|
SET_OUTPUT(MOTOR_CURRENT_PWM_Z_PIN);
|
|
digipot_current(1, motor_current_setting[1]);
|
|
#endif
|
|
#if PIN_EXISTS(MOTOR_CURRENT_PWM_E)
|
|
SET_OUTPUT(MOTOR_CURRENT_PWM_E_PIN);
|
|
digipot_current(2, motor_current_setting[2]);
|
|
#endif
|
|
//Set timer5 to 31khz so the PWM of the motor power is as constant as possible. (removes a buzzing noise)
|
|
TCCR5B = (TCCR5B & ~(_BV(CS50) | _BV(CS51) | _BV(CS52))) | _BV(CS50);
|
|
#endif
|
|
}
|
|
|
|
void Stepper::digipot_current(uint8_t driver, int current) {
|
|
#if HAS_DIGIPOTSS
|
|
const uint8_t digipot_ch[] = DIGIPOT_CHANNELS;
|
|
digitalPotWrite(digipot_ch[driver], current);
|
|
#elif HAS_MOTOR_CURRENT_PWM
|
|
#define _WRITE_CURRENT_PWM(P) analogWrite(P, 255L * current / (MOTOR_CURRENT_PWM_RANGE))
|
|
switch (driver) {
|
|
#if PIN_EXISTS(MOTOR_CURRENT_PWM_XY)
|
|
case 0: _WRITE_CURRENT_PWM(MOTOR_CURRENT_PWM_XY_PIN); break;
|
|
#endif
|
|
#if PIN_EXISTS(MOTOR_CURRENT_PWM_Z)
|
|
case 1: _WRITE_CURRENT_PWM(MOTOR_CURRENT_PWM_Z_PIN); break;
|
|
#endif
|
|
#if PIN_EXISTS(MOTOR_CURRENT_PWM_E)
|
|
case 2: _WRITE_CURRENT_PWM(MOTOR_CURRENT_PWM_E_PIN); break;
|
|
#endif
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#endif
|
|
|
|
#if HAS_MICROSTEPS
|
|
|
|
/**
|
|
* Software-controlled Microstepping
|
|
*/
|
|
|
|
void Stepper::microstep_init() {
|
|
SET_OUTPUT(X_MS1_PIN);
|
|
SET_OUTPUT(X_MS2_PIN);
|
|
#if HAS_MICROSTEPS_Y
|
|
SET_OUTPUT(Y_MS1_PIN);
|
|
SET_OUTPUT(Y_MS2_PIN);
|
|
#endif
|
|
#if HAS_MICROSTEPS_Z
|
|
SET_OUTPUT(Z_MS1_PIN);
|
|
SET_OUTPUT(Z_MS2_PIN);
|
|
#endif
|
|
#if HAS_MICROSTEPS_E0
|
|
SET_OUTPUT(E0_MS1_PIN);
|
|
SET_OUTPUT(E0_MS2_PIN);
|
|
#endif
|
|
#if HAS_MICROSTEPS_E1
|
|
SET_OUTPUT(E1_MS1_PIN);
|
|
SET_OUTPUT(E1_MS2_PIN);
|
|
#endif
|
|
static const uint8_t microstep_modes[] = MICROSTEP_MODES;
|
|
for (uint16_t i = 0; i < COUNT(microstep_modes); i++)
|
|
microstep_mode(i, microstep_modes[i]);
|
|
}
|
|
|
|
void Stepper::microstep_ms(uint8_t driver, int8_t ms1, int8_t ms2) {
|
|
if (ms1 >= 0) switch (driver) {
|
|
case 0: digitalWrite(X_MS1_PIN, ms1); break;
|
|
#if HAS_MICROSTEPS_Y
|
|
case 1: digitalWrite(Y_MS1_PIN, ms1); break;
|
|
#endif
|
|
#if HAS_MICROSTEPS_Z
|
|
case 2: digitalWrite(Z_MS1_PIN, ms1); break;
|
|
#endif
|
|
#if HAS_MICROSTEPS_E0
|
|
case 3: digitalWrite(E0_MS1_PIN, ms1); break;
|
|
#endif
|
|
#if HAS_MICROSTEPS_E1
|
|
case 4: digitalWrite(E1_MS1_PIN, ms1); break;
|
|
#endif
|
|
}
|
|
if (ms2 >= 0) switch (driver) {
|
|
case 0: digitalWrite(X_MS2_PIN, ms2); break;
|
|
#if HAS_MICROSTEPS_Y
|
|
case 1: digitalWrite(Y_MS2_PIN, ms2); break;
|
|
#endif
|
|
#if HAS_MICROSTEPS_Z
|
|
case 2: digitalWrite(Z_MS2_PIN, ms2); break;
|
|
#endif
|
|
#if HAS_MICROSTEPS_E0
|
|
case 3: digitalWrite(E0_MS2_PIN, ms2); break;
|
|
#endif
|
|
#if HAS_MICROSTEPS_E1
|
|
case 4: digitalWrite(E1_MS2_PIN, ms2); break;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void Stepper::microstep_mode(uint8_t driver, uint8_t stepping_mode) {
|
|
switch (stepping_mode) {
|
|
case 1: microstep_ms(driver, MICROSTEP1); break;
|
|
case 2: microstep_ms(driver, MICROSTEP2); break;
|
|
case 4: microstep_ms(driver, MICROSTEP4); break;
|
|
case 8: microstep_ms(driver, MICROSTEP8); break;
|
|
case 16: microstep_ms(driver, MICROSTEP16); break;
|
|
}
|
|
}
|
|
|
|
void Stepper::microstep_readings() {
|
|
SERIAL_PROTOCOLLNPGM("MS1,MS2 Pins");
|
|
SERIAL_PROTOCOLPGM("X: ");
|
|
SERIAL_PROTOCOL(READ(X_MS1_PIN));
|
|
SERIAL_PROTOCOLLN(READ(X_MS2_PIN));
|
|
#if HAS_MICROSTEPS_Y
|
|
SERIAL_PROTOCOLPGM("Y: ");
|
|
SERIAL_PROTOCOL(READ(Y_MS1_PIN));
|
|
SERIAL_PROTOCOLLN(READ(Y_MS2_PIN));
|
|
#endif
|
|
#if HAS_MICROSTEPS_Z
|
|
SERIAL_PROTOCOLPGM("Z: ");
|
|
SERIAL_PROTOCOL(READ(Z_MS1_PIN));
|
|
SERIAL_PROTOCOLLN(READ(Z_MS2_PIN));
|
|
#endif
|
|
#if HAS_MICROSTEPS_E0
|
|
SERIAL_PROTOCOLPGM("E0: ");
|
|
SERIAL_PROTOCOL(READ(E0_MS1_PIN));
|
|
SERIAL_PROTOCOLLN(READ(E0_MS2_PIN));
|
|
#endif
|
|
#if HAS_MICROSTEPS_E1
|
|
SERIAL_PROTOCOLPGM("E1: ");
|
|
SERIAL_PROTOCOL(READ(E1_MS1_PIN));
|
|
SERIAL_PROTOCOLLN(READ(E1_MS2_PIN));
|
|
#endif
|
|
}
|
|
|
|
#endif // HAS_MICROSTEPS
|
|
|
|
#if ENABLED(LIN_ADVANCE)
|
|
|
|
void Stepper::advance_M905(const float &k) {
|
|
if (k >= 0) extruder_advance_k = k;
|
|
SERIAL_ECHO_START;
|
|
SERIAL_ECHOPAIR("Advance factor: ", extruder_advance_k);
|
|
SERIAL_EOL;
|
|
}
|
|
|
|
#endif // LIN_ADVANCE
|