cc96a47e7f
Calibrate C/R values via univariate minimization using golden section. This is done in several passes: - Bootstrap C by setting an initial high R value - Calibrate R at the requested working temperature - Cooldown - Refine C to the final value - Estimate R losses for a subset of fan speeds - Interpolate remaining values to speed-up the process This results in robust values which are tailored to the current filtering constants, and avoid having to sample for an extended time to reach the required resolution. The refining pass could avoid cooldown if the recording buffer was at least twice as large, so that we could record both the heating and the steady-state, saving _considerable_ time.
256 lines
6.8 KiB
C
Executable File
256 lines
6.8 KiB
C
Executable File
/*
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temperature.h - temperature controller
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Part of Marlin
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Copyright (c) 2011 Erik van der Zalm
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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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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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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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#ifndef temperature_h
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#define temperature_h
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#include "Marlin.h"
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#include "config.h"
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#ifdef SYSTEM_TIMER_2
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#define ENABLE_SOFT_PWM_INTERRUPT() TIMSK2 |= (1<<OCIE2B)
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#define DISABLE_SOFT_PWM_INTERRUPT() TIMSK2 &= ~(1<<OCIE2B)
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#else //SYSTEM_TIMER_2
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#define ENABLE_SOFT_PWM_INTERRUPT() TIMSK0 |= (1<<OCIE0B)
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#define DISABLE_SOFT_PWM_INTERRUPT() TIMSK0 &= ~(1<<OCIE0B)
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#endif //SYSTEM_TIMER_2
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// public functions
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void soft_pwm_init(); //initialize the soft pwm isr
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void temp_mgr_init(); //initialize the temperature handler
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void manage_heater(); //it is critical that this is called periodically.
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extern bool checkAllHotends(void);
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// low level conversion routines
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// do not use these routines and variables outside of temperature.cpp
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extern int target_temperature[EXTRUDERS];
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extern float current_temperature[EXTRUDERS];
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#ifdef SHOW_TEMP_ADC_VALUES
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extern int current_temperature_raw[EXTRUDERS];
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extern int current_temperature_bed_raw;
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#endif
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extern int target_temperature_bed;
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extern float current_temperature_bed;
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#ifdef PINDA_THERMISTOR
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extern uint16_t current_temperature_raw_pinda;
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extern float current_temperature_pinda;
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bool has_temperature_compensation();
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#endif
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#ifdef AMBIENT_THERMISTOR
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extern int current_temperature_raw_ambient;
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extern float current_temperature_ambient;
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#endif
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#ifdef VOLT_PWR_PIN
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extern int current_voltage_raw_pwr;
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#endif
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#ifdef VOLT_BED_PIN
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extern int current_voltage_raw_bed;
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#endif
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#ifdef IR_SENSOR_ANALOG
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extern uint16_t current_voltage_raw_IR;
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#endif //IR_SENSOR_ANALOG
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extern bool bedPWMDisabled;
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#ifdef PIDTEMP
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extern int pid_cycle, pid_number_of_cycles;
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extern float _Kp,_Ki,_Kd;
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float scalePID_i(float i);
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float scalePID_d(float d);
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float unscalePID_i(float i);
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float unscalePID_d(float d);
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bool pidTuningRunning(); // returns true if PID tuning is still running
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void preparePidTuning(); // non-blocking call to set "pidTuningRunning" to true immediately
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#endif
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#ifdef BABYSTEPPING
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extern volatile int babystepsTodo[3];
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inline void babystepsTodoZadd(int n)
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{
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if (n != 0) {
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CRITICAL_SECTION_START
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babystepsTodo[Z_AXIS] += n;
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CRITICAL_SECTION_END
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}
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}
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#endif
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void resetPID(uint8_t extruder);
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//high level conversion routines, for use outside of temperature.cpp
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//inline so that there is no performance decrease.
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//deg=degreeCelsius
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// Doesn't save FLASH when FORCE_INLINE removed.
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FORCE_INLINE float degHotend(uint8_t extruder) {
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return current_temperature[extruder];
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};
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#ifdef SHOW_TEMP_ADC_VALUES
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FORCE_INLINE float rawHotendTemp(uint8_t extruder) {
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return current_temperature_raw[extruder];
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};
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FORCE_INLINE float rawBedTemp() {
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return current_temperature_bed_raw;
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};
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#endif
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FORCE_INLINE float degBed() {
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return current_temperature_bed;
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};
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// Doesn't save FLASH when FORCE_INLINE removed.
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FORCE_INLINE float degTargetHotend(uint8_t extruder) {
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return target_temperature[extruder];
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};
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FORCE_INLINE float degTargetBed() {
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return target_temperature_bed;
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};
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// Doesn't save FLASH when FORCE_INLINE removed.
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FORCE_INLINE void setTargetHotend(const float &celsius, uint8_t extruder) {
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target_temperature[extruder] = celsius;
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resetPID(extruder);
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};
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// Doesn't save FLASH when not inlined.
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static inline void setTargetHotendSafe(const float &celsius, uint8_t extruder)
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{
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if (extruder<EXTRUDERS) {
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setTargetHotend(celsius, extruder);
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}
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}
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// Doesn't save FLASH when not inlined.
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static inline void setAllTargetHotends(const float &celsius)
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{
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for(uint8_t i = 0; i < EXTRUDERS; i++) setTargetHotend(celsius, i);
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}
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FORCE_INLINE void setTargetBed(const float &celsius) {
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target_temperature_bed = celsius;
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};
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FORCE_INLINE bool isHeatingHotend(uint8_t extruder){
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return target_temperature[extruder] > current_temperature[extruder];
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};
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FORCE_INLINE bool isHeatingBed() {
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return target_temperature_bed > current_temperature_bed;
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};
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FORCE_INLINE bool isCoolingHotend(uint8_t extruder) {
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return target_temperature[extruder] < current_temperature[extruder];
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};
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FORCE_INLINE bool isCoolingBed() {
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return target_temperature_bed < current_temperature_bed;
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};
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#define degHotend0() degHotend(0)
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#define degTargetHotend0() degTargetHotend(0)
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#define setTargetHotend0(_celsius) setTargetHotend((_celsius), 0)
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#define isHeatingHotend0() isHeatingHotend(0)
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#define isCoolingHotend0() isCoolingHotend(0)
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#if EXTRUDERS > 1
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#define degHotend1() degHotend(1)
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#define degTargetHotend1() degTargetHotend(1)
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#define setTargetHotend1(_celsius) setTargetHotend((_celsius), 1)
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#define isHeatingHotend1() isHeatingHotend(1)
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#define isCoolingHotend1() isCoolingHotend(1)
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#else
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#define setTargetHotend1(_celsius) do{}while(0)
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#endif
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#if EXTRUDERS > 2
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#define degHotend2() degHotend(2)
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#define degTargetHotend2() degTargetHotend(2)
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#define setTargetHotend2(_celsius) setTargetHotend((_celsius), 2)
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#define isHeatingHotend2() isHeatingHotend(2)
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#define isCoolingHotend2() isCoolingHotend(2)
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#else
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#define setTargetHotend2(_celsius) do{}while(0)
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#endif
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#if EXTRUDERS > 3
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#error Invalid number of extruders
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#endif
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// return "false", if all heaters are 'off' (ie. "true", if any heater is 'on')
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#define CHECK_ALL_HEATERS (checkAllHotends()||(target_temperature_bed!=0))
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int getHeaterPower(int heater);
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void disable_heater(); // Disable all heaters *instantaneously*
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void updatePID();
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FORCE_INLINE void autotempShutdown(){
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#ifdef AUTOTEMP
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if(autotemp_enabled)
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{
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autotemp_enabled=false;
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if(degTargetHotend(active_extruder)>autotemp_min)
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setTargetHotend(0,active_extruder);
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}
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#endif
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}
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void PID_autotune(float temp, int extruder, int ncycles);
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#ifdef TEMP_MODEL
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void temp_model_set_enabled(bool enabled);
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void temp_model_set_warn_beep(bool enabled);
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void temp_model_set_params(float C = NAN, float P = NAN, float Ta_corr = NAN, float warn = NAN, float err = NAN);
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void temp_model_set_resistance(uint8_t index, float R);
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void temp_model_report_settings();
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void temp_model_reset_settings();
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void temp_model_load_settings();
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void temp_model_save_settings();
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void temp_model_autotune(int16_t temp = 0);
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#ifdef TEMP_MODEL_DEBUG
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void temp_model_log_enable(bool enable);
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#endif
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#endif
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#ifdef FAN_SOFT_PWM
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extern unsigned char fanSpeedSoftPwm;
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#endif
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extern uint8_t fanSpeedBckp;
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#endif
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