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- /**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 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 <https://www.gnu.org/licenses/>.
- *
- */
-
- #include "../inc/MarlinConfig.h"
-
- #if ENABLED(USE_CONTROLLER_FAN)
-
- #include "controllerfan.h"
- #include "../module/stepper/indirection.h"
- #include "../module/temperature.h"
-
- ControllerFan controllerFan;
-
- uint8_t ControllerFan::speed;
-
- #if ENABLED(CONTROLLER_FAN_EDITABLE)
- controllerFan_settings_t ControllerFan::settings; // {0}
- #endif
-
- void ControllerFan::setup() {
- SET_OUTPUT(CONTROLLER_FAN_PIN);
- init();
- }
-
- void ControllerFan::set_fan_speed(const uint8_t s) {
- speed = s < (CONTROLLERFAN_SPEED_MIN) ? 0 : s; // Fan OFF below minimum
- }
-
- void ControllerFan::update() {
- static millis_t lastMotorOn = 0, // Last time a motor was turned on
- nextMotorCheck = 0; // Last time the state was checked
- const millis_t ms = millis();
- if (ELAPSED(ms, nextMotorCheck)) {
- nextMotorCheck = ms + 2500UL; // Not a time critical function, so only check every 2.5s
-
- #define MOTOR_IS_ON(A,B) (A##_ENABLE_READ() == bool(B##_ENABLE_ON))
- #define _OR_ENABLED_E(N) || MOTOR_IS_ON(E##N,E)
-
- const bool motor_on = (
- ( DISABLED(CONTROLLER_FAN_IGNORE_Z) &&
- ( MOTOR_IS_ON(Z,Z)
- || TERN0(HAS_Z2_ENABLE, MOTOR_IS_ON(Z2,Z))
- || TERN0(HAS_Z3_ENABLE, MOTOR_IS_ON(Z3,Z))
- || TERN0(HAS_Z4_ENABLE, MOTOR_IS_ON(Z4,Z))
- )
- ) || (
- DISABLED(CONTROLLER_FAN_USE_Z_ONLY) &&
- ( MOTOR_IS_ON(X,X) || MOTOR_IS_ON(Y,Y)
- || TERN0(HAS_X2_ENABLE, MOTOR_IS_ON(X2,X))
- || TERN0(HAS_Y2_ENABLE, MOTOR_IS_ON(Y2,Y))
- #if E_STEPPERS
- REPEAT(E_STEPPERS, _OR_ENABLED_E)
- #endif
- )
- )
- );
-
- // If any of the drivers or the heated bed are enabled...
- if (motor_on || TERN0(HAS_HEATED_BED, thermalManager.temp_bed.soft_pwm_amount > 0))
- lastMotorOn = ms; //... set time to NOW so the fan will turn on
-
- // Fan Settings. Set fan > 0:
- // - If AutoMode is on and steppers have been enabled for CONTROLLERFAN_IDLE_TIME seconds.
- // - If System is on idle and idle fan speed settings is activated.
- set_fan_speed(
- settings.auto_mode && lastMotorOn && PENDING(ms, lastMotorOn + SEC_TO_MS(settings.duration))
- ? settings.active_speed : settings.idle_speed
- );
-
- // Allow digital or PWM fan output (see M42 handling)
- WRITE(CONTROLLER_FAN_PIN, speed);
- analogWrite(pin_t(CONTROLLER_FAN_PIN), speed);
- }
- }
-
- #endif // USE_CONTROLLER_FAN
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