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100 lines
3.7 KiB
C++
100 lines
3.7 KiB
C++
6 years ago
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/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2019 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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* feature/spindle_laser.cpp
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*/
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#include "../inc/MarlinConfig.h"
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#if HAS_CUTTER
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#include "spindle_laser.h"
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SpindleLaser cutter;
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cutter_power_t SpindleLaser::power; // = 0
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void SpindleLaser::init() {
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OUT_WRITE(SPINDLE_LASER_ENA_PIN, !SPINDLE_LASER_ACTIVE_HIGH); // Init spindle to off
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#if ENABLED(SPINDLE_CHANGE_DIR)
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OUT_WRITE(SPINDLE_DIR_PIN, SPINDLE_INVERT_DIR ? 255 : 0); // Init rotation to clockwise (M3)
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#endif
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#if ENABLED(SPINDLE_LASER_PWM) && PIN_EXISTS(SPINDLE_LASER_PWM)
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SET_PWM(SPINDLE_LASER_PWM_PIN);
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analogWrite(SPINDLE_LASER_PWM_PIN, SPINDLE_LASER_PWM_INVERT ? 255 : 0); // set to lowest speed
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#endif
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}
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#if ENABLED(SPINDLE_LASER_PWM)
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/**
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* ocr_val_mode() is used for debugging and to get the points needed to compute the RPM vs ocr_val line
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*
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* it accepts inputs of 0-255
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*/
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void SpindleLaser::set_ocr(const uint8_t ocr) {
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WRITE(SPINDLE_LASER_ENA_PIN, SPINDLE_LASER_ACTIVE_HIGH); // turn spindle on (active low)
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#if ENABLED(SPINDLE_LASER_PWM)
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analogWrite(SPINDLE_LASER_PWM_PIN, (SPINDLE_LASER_PWM_INVERT) ? 255 - ocr : ocr);
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#endif
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}
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#endif
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void SpindleLaser::update_output() {
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const bool ena = enabled();
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#if ENABLED(SPINDLE_LASER_PWM)
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if (ena) {
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constexpr float inv_slope = RECIPROCAL(SPEED_POWER_SLOPE),
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min_ocr = (SPEED_POWER_MIN - (SPEED_POWER_INTERCEPT)) * inv_slope, // Minimum allowed
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max_ocr = (SPEED_POWER_MAX - (SPEED_POWER_INTERCEPT)) * inv_slope; // Maximum allowed
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int16_t ocr_val;
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if (power <= SPEED_POWER_MIN) ocr_val = min_ocr; // Use minimum if set below
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else if (power >= SPEED_POWER_MAX) ocr_val = max_ocr; // Use maximum if set above
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else ocr_val = (power - (SPEED_POWER_INTERCEPT)) * inv_slope; // Use calculated OCR value
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set_ocr(ocr_val & 0xFF); // ...limited to Atmel PWM max
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}
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else { // Convert RPM to PWM duty cycle
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WRITE(SPINDLE_LASER_ENA_PIN, !SPINDLE_LASER_ACTIVE_HIGH); // Turn spindle off (active low)
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analogWrite(SPINDLE_LASER_PWM_PIN, SPINDLE_LASER_PWM_INVERT ? 255 : 0); // Only write low byte
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}
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#else
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WRITE(SPINDLE_LASER_ENA_PIN, ena ? SPINDLE_LASER_ACTIVE_HIGH : !SPINDLE_LASER_ACTIVE_HIGH);
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#endif
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power_delay(ena);
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}
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#if ENABLED(SPINDLE_CHANGE_DIR)
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void SpindleLaser::set_direction(const bool reverse) {
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const bool dir_state = (reverse == SPINDLE_INVERT_DIR); // Forward (M3) HIGH when not inverted
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#if ENABLED(SPINDLE_STOP_ON_DIR_CHANGE)
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if (enabled() && READ(SPINDLE_DIR_PIN) != dir_state) disable();
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#endif
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WRITE(SPINDLE_DIR_PIN, dir_state);
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}
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#endif
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#endif // HAS_CUTTER
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