init

temperature.h

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+/*
+  temperature.h - temperature controller
+  Part of Marlin
+
+  Copyright (c) 2011 Erik van der Zalm
+
+  Grbl 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.
+
+  Grbl 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 Grbl.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef temperature_h
+#define temperature_h 
+
+#include "Marlin.h"
+#include "planner.h"
+#ifdef PID_ADD_EXTRUSION_RATE
+  #include "stepper.h"
+#endif
+
+// public functions
+void tp_init();  //initialize the heating
+void manage_heater(); //it is critical that this is called periodically.
+
+#ifdef FILAMENT_SENSOR
+// For converting raw Filament Width to milimeters 
+ float analog2widthFil(); 
+ 
+// For converting raw Filament Width to an extrusion ratio 
+ int widthFil_to_size_ratio();
+#endif
+
+// low level conversion routines
+// do not use these routines and variables outside of temperature.cpp
+extern int target_temperature[EXTRUDERS];  
+extern float current_temperature[EXTRUDERS];
+#ifdef SHOW_TEMP_ADC_VALUES
+  extern int current_temperature_raw[EXTRUDERS];
+  extern int current_temperature_bed_raw;
+#endif
+extern int target_temperature_bed;
+extern float current_temperature_bed;
+#ifdef TEMP_SENSOR_1_AS_REDUNDANT
+  extern float redundant_temperature;
+#endif
+
+#if defined(CONTROLLERFAN_PIN) && CONTROLLERFAN_PIN > -1
+  extern unsigned char soft_pwm_bed;
+#endif
+
+#ifdef PIDTEMP
+
+  #ifdef PID_PARAMS_PER_EXTRUDER
+    extern float Kp[EXTRUDERS], Ki[EXTRUDERS], Kd[EXTRUDERS], Kc[EXTRUDERS]; // one param per extruder
+    #define PID_PARAM(param,e) param[e] // use macro to point to array value
+  #else
+    extern float Kp, Ki, Kd, Kc; // one param per extruder - saves 20 or 36 bytes of ram (inc array pointer)
+    #define PID_PARAM(param, e) param // use macro to point directly to value
+  #endif // PID_PARAMS_PER_EXTRUDER	
+  float scalePID_i(float i);
+  float scalePID_d(float d);
+  float unscalePID_i(float i);
+  float unscalePID_d(float d);
+
+#endif
+#ifdef PIDTEMPBED
+  extern float bedKp,bedKi,bedKd;
+#endif
+  
+  
+#ifdef BABYSTEPPING
+  extern volatile int babystepsTodo[3];
+#endif
+  
+//high level conversion routines, for use outside of temperature.cpp
+//inline so that there is no performance decrease.
+//deg=degreeCelsius
+
+FORCE_INLINE float degHotend(uint8_t extruder) {  
+  return current_temperature[extruder];
+};
+
+#ifdef SHOW_TEMP_ADC_VALUES
+  FORCE_INLINE float rawHotendTemp(uint8_t extruder) {  
+    return current_temperature_raw[extruder];
+  };
+
+  FORCE_INLINE float rawBedTemp() {  
+    return current_temperature_bed_raw;
+  };
+#endif
+
+FORCE_INLINE float degBed() {
+  return current_temperature_bed;
+};
+
+FORCE_INLINE float degTargetHotend(uint8_t extruder) {  
+  return target_temperature[extruder];
+};
+
+FORCE_INLINE float degTargetBed() {   
+  return target_temperature_bed;
+};
+
+FORCE_INLINE void setTargetHotend(const float &celsius, uint8_t extruder) {  
+  target_temperature[extruder] = celsius;
+};
+
+FORCE_INLINE void setTargetBed(const float &celsius) {  
+  target_temperature_bed = celsius;
+};
+
+FORCE_INLINE bool isHeatingHotend(uint8_t extruder){  
+  return target_temperature[extruder] > current_temperature[extruder];
+};
+
+FORCE_INLINE bool isHeatingBed() {
+  return target_temperature_bed > current_temperature_bed;
+};
+
+FORCE_INLINE bool isCoolingHotend(uint8_t extruder) {  
+  return target_temperature[extruder] < current_temperature[extruder];
+};
+
+FORCE_INLINE bool isCoolingBed() {
+  return target_temperature_bed < current_temperature_bed;
+};
+
+#define degHotend0() degHotend(0)
+#define degTargetHotend0() degTargetHotend(0)
+#define setTargetHotend0(_celsius) setTargetHotend((_celsius), 0)
+#define isHeatingHotend0() isHeatingHotend(0)
+#define isCoolingHotend0() isCoolingHotend(0)
+#if EXTRUDERS > 1
+#define degHotend1() degHotend(1)
+#define degTargetHotend1() degTargetHotend(1)
+#define setTargetHotend1(_celsius) setTargetHotend((_celsius), 1)
+#define isHeatingHotend1() isHeatingHotend(1)
+#define isCoolingHotend1() isCoolingHotend(1)
+#else
+#define setTargetHotend1(_celsius) do{}while(0)
+#endif
+#if EXTRUDERS > 2
+#define degHotend2() degHotend(2)
+#define degTargetHotend2() degTargetHotend(2)
+#define setTargetHotend2(_celsius) setTargetHotend((_celsius), 2)
+#define isHeatingHotend2() isHeatingHotend(2)
+#define isCoolingHotend2() isCoolingHotend(2)
+#else
+#define setTargetHotend2(_celsius) do{}while(0)
+#endif
+#if EXTRUDERS > 3
+#error Invalid number of extruders
+#endif
+
+
+
+int getHeaterPower(int heater);
+void disable_heater();
+void setWatch();
+void updatePID();
+
+#if defined (THERMAL_RUNAWAY_PROTECTION_PERIOD) && THERMAL_RUNAWAY_PROTECTION_PERIOD > 0
+void thermal_runaway_protection(int *state, unsigned long *timer, float temperature, float target_temperature, int heater_id, int period_seconds, int hysteresis_degc);
+static int thermal_runaway_state_machine[3]; // = {0,0,0};
+static unsigned long thermal_runaway_timer[3]; // = {0,0,0};
+static bool thermal_runaway = false;
+  #if TEMP_SENSOR_BED != 0
+    static int thermal_runaway_bed_state_machine;
+    static unsigned long thermal_runaway_bed_timer;
+  #endif
+#endif
+
+FORCE_INLINE void autotempShutdown(){
+ #ifdef AUTOTEMP
+ if(autotemp_enabled)
+ {
+  autotemp_enabled=false;
+  if(degTargetHotend(active_extruder)>autotemp_min)
+    setTargetHotend(0,active_extruder);
+ }
+ #endif
+}
+
+void PID_autotune(float temp, int extruder, int ncycles);
+
+void setExtruderAutoFanState(int pin, bool state);
+void checkExtruderAutoFans();
+
+#endif
+