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- /**
- * Marlin 3D Printer Firmware
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * Based on Sprinter and grbl.
- * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
- *
- * This program 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.
- *
- * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
- /**
- * feature/spindle_laser.cpp
- */
-
- #include "../inc/MarlinConfig.h"
-
- #if HAS_CUTTER
-
- #include "spindle_laser.h"
-
- SpindleLaser cutter;
-
- cutter_power_t SpindleLaser::power; // = 0
-
- void SpindleLaser::init() {
- OUT_WRITE(SPINDLE_LASER_ENA_PIN, !SPINDLE_LASER_ACTIVE_HIGH); // Init spindle to off
- #if ENABLED(SPINDLE_CHANGE_DIR)
- OUT_WRITE(SPINDLE_DIR_PIN, SPINDLE_INVERT_DIR ? 255 : 0); // Init rotation to clockwise (M3)
- #endif
- #if ENABLED(SPINDLE_LASER_PWM) && PIN_EXISTS(SPINDLE_LASER_PWM)
- SET_PWM(SPINDLE_LASER_PWM_PIN);
- analogWrite(SPINDLE_LASER_PWM_PIN, SPINDLE_LASER_PWM_INVERT ? 255 : 0); // set to lowest speed
- #endif
- }
-
- #if ENABLED(SPINDLE_LASER_PWM)
-
- /**
- * ocr_val_mode() is used for debugging and to get the points needed to compute the RPM vs ocr_val line
- *
- * it accepts inputs of 0-255
- */
- void SpindleLaser::set_ocr(const uint8_t ocr) {
- WRITE(SPINDLE_LASER_ENA_PIN, SPINDLE_LASER_ACTIVE_HIGH); // turn spindle on (active low)
- #if ENABLED(SPINDLE_LASER_PWM)
- analogWrite(SPINDLE_LASER_PWM_PIN, (SPINDLE_LASER_PWM_INVERT) ? 255 - ocr : ocr);
- #endif
- }
-
- #endif
-
- void SpindleLaser::update_output() {
- const bool ena = enabled();
- #if ENABLED(SPINDLE_LASER_PWM)
- if (ena) {
- constexpr float inv_slope = RECIPROCAL(SPEED_POWER_SLOPE),
- min_ocr = (SPEED_POWER_MIN - (SPEED_POWER_INTERCEPT)) * inv_slope, // Minimum allowed
- max_ocr = (SPEED_POWER_MAX - (SPEED_POWER_INTERCEPT)) * inv_slope; // Maximum allowed
- int16_t ocr_val;
- if (power <= SPEED_POWER_MIN) ocr_val = min_ocr; // Use minimum if set below
- else if (power >= SPEED_POWER_MAX) ocr_val = max_ocr; // Use maximum if set above
- else ocr_val = (power - (SPEED_POWER_INTERCEPT)) * inv_slope; // Use calculated OCR value
- set_ocr(ocr_val & 0xFF); // ...limited to Atmel PWM max
- }
- else { // Convert RPM to PWM duty cycle
- WRITE(SPINDLE_LASER_ENA_PIN, !SPINDLE_LASER_ACTIVE_HIGH); // Turn spindle off (active low)
- analogWrite(SPINDLE_LASER_PWM_PIN, SPINDLE_LASER_PWM_INVERT ? 255 : 0); // Only write low byte
- }
- #else
- WRITE(SPINDLE_LASER_ENA_PIN, ena ? SPINDLE_LASER_ACTIVE_HIGH : !SPINDLE_LASER_ACTIVE_HIGH);
- #endif
- power_delay(ena);
- }
-
- #if ENABLED(SPINDLE_CHANGE_DIR)
-
- void SpindleLaser::set_direction(const bool reverse) {
- const bool dir_state = (reverse == SPINDLE_INVERT_DIR); // Forward (M3) HIGH when not inverted
- #if ENABLED(SPINDLE_STOP_ON_DIR_CHANGE)
- if (enabled() && READ(SPINDLE_DIR_PIN) != dir_state) disable();
- #endif
- WRITE(SPINDLE_DIR_PIN, dir_state);
- }
-
- #endif
-
- #endif // HAS_CUTTER
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