Firmware2/Marlin/src/feature/controllerfan.cpp

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/**
* Marlin 3D Printer Firmware
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* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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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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*
* 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/>.
*
*/
#include "../inc/MarlinConfig.h"
#if ENABLED(USE_CONTROLLER_FAN)
#include "controllerfan.h"
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#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
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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
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#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 = MOTOR_IS_ON(Z,Z)
#if HAS_Z2_ENABLE
|| MOTOR_IS_ON(Z2,Z)
#endif
#if HAS_Z3_ENABLE
|| MOTOR_IS_ON(Z3,Z)
#endif
#if HAS_Z4_ENABLE
|| MOTOR_IS_ON(Z4,Z)
#endif
|| (DISABLED(CONTROLLER_FAN_USE_Z_ONLY) && (
MOTOR_IS_ON(X,X) || MOTOR_IS_ON(Y,Y)
#if HAS_X2_ENABLE
|| MOTOR_IS_ON(X2,X)
#endif
#if HAS_Y2_ENABLE
|| MOTOR_IS_ON(Y2,Y)
#endif
#if E_STEPPERS
REPEAT(E_STEPPERS, _OR_ENABLED_E)
#endif
)
)
;
// If any of the drivers or the heated bed are enabled...
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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
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// 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(
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settings.auto_mode && lastMotorOn && PENDING(ms, lastMotorOn + SEC_TO_MS(settings.duration))
? settings.active_speed : settings.idle_speed
);
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// Allow digital or PWM fan output (see M42 handling)
WRITE(CONTROLLER_FAN_PIN, speed);
analogWrite(pin_t(CONTROLLER_FAN_PIN), speed);
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}
}
#endif // USE_CONTROLLER_FAN