optimize readonly
[clinton/Smoothieware.git] / src / modules / tools / temperaturecontrol / TemperatureControl.cpp
index 241cea9..96345a7 100644 (file)
 #include "TemperatureControl.h"
 #include "TemperatureControlPool.h"
 #include "libs/Pin.h"
-#include "libs/Median.h"
 #include "modules/robot/Conveyor.h"
 #include "PublicDataRequest.h"
-#include "TemperatureControlPublicAccess.h"
+
+#include "PublicData.h"
+#include "ToolManagerPublicAccess.h"
 #include "StreamOutputPool.h"
 #include "Config.h"
 #include "checksumm.h"
 #include "Gcode.h"
-#include "Adc.h"
 #include "SlowTicker.h"
 #include "Pauser.h"
 #include "ConfigValue.h"
-#include "TemperatureControl.h"
 #include "PID_Autotuner.h"
 
+// Temp sensor implementations:
+#include "Thermistor.h"
+#include "max31855.h"
+
 #include "MRI_Hooks.h"
 
 #define UNDEFINED -1
 
-#define thermistor_checksum                CHECKSUM("thermistor")
-#define r0_checksum                        CHECKSUM("r0")
+#define sensor_checksum                    CHECKSUM("sensor")
+
 #define readings_per_second_checksum       CHECKSUM("readings_per_second")
 #define max_pwm_checksum                   CHECKSUM("max_pwm")
 #define pwm_frequency_checksum             CHECKSUM("pwm_frequency")
 #define bang_bang_checksum                 CHECKSUM("bang_bang")
 #define hysteresis_checksum                CHECKSUM("hysteresis")
-#define t0_checksum                        CHECKSUM("t0")
-#define beta_checksum                      CHECKSUM("beta")
-#define vadc_checksum                      CHECKSUM("vadc")
-#define vcc_checksum                       CHECKSUM("vcc")
-#define r1_checksum                        CHECKSUM("r1")
-#define r2_checksum                        CHECKSUM("r2")
-#define thermistor_pin_checksum            CHECKSUM("thermistor_pin")
 #define heater_pin_checksum                CHECKSUM("heater_pin")
 
 #define get_m_code_checksum                CHECKSUM("get_m_code")
 #define preset1_checksum                   CHECKSUM("preset1")
 #define preset2_checksum                   CHECKSUM("preset2")
 
+TemperatureControl::TemperatureControl(uint16_t name, int index)
+{
+    name_checksum= name;
+    pool_index= index;
+    waiting= false;
+    min_temp_violated= false;
+    sensor= nullptr;
+    readonly= false;
+}
 
-TemperatureControl::TemperatureControl(uint16_t name) :
-  name_checksum(name), waiting(false), min_temp_violated(false) {}
+TemperatureControl::~TemperatureControl()
+{
+    delete sensor;
+}
 
-void TemperatureControl::on_module_loaded(){
+void TemperatureControl::on_module_loaded()
+{
 
     // We start not desiring any temp
     this->target_temperature = UNDEFINED;
 
     // Settings
-    this->on_config_reload(this);
-
-    this->acceleration_factor = 10;
+    this->load_config();
 
     // Register for events
-    register_for_event(ON_CONFIG_RELOAD);
-    this->register_for_event(ON_GCODE_EXECUTE);
     this->register_for_event(ON_GCODE_RECEIVED);
-    this->register_for_event(ON_MAIN_LOOP);
-    this->register_for_event(ON_SECOND_TICK);
     this->register_for_event(ON_GET_PUBLIC_DATA);
-    this->register_for_event(ON_SET_PUBLIC_DATA);
+
+    if(!this->readonly) {
+        this->register_for_event(ON_GCODE_EXECUTE);
+        this->register_for_event(ON_SECOND_TICK);
+        this->register_for_event(ON_MAIN_LOOP);
+        this->register_for_event(ON_SET_PUBLIC_DATA);
+        this->register_for_event(ON_HALT);
+    }
+}
+
+void TemperatureControl::on_halt(void *arg)
+{
+    // turn off heater
+    this->o = 0;
+    this->heater_pin.set(0);
+    this->target_temperature = UNDEFINED;
 }
 
-void TemperatureControl::on_main_loop(void* argument){
+void TemperatureControl::on_main_loop(void *argument)
+{
     if (this->min_temp_violated) {
-        THEKERNEL->streams->printf("Error: MINTEMP triggered on P%d.%d! check your thermistors!\n", this->thermistor_pin.port_number, this->thermistor_pin.pin);
+        THEKERNEL->streams->printf("Error: MINTEMP triggered. Check your temperature sensors!\n");
         this->min_temp_violated = false;
     }
 }
 
 // Get configuration from the config file
-void TemperatureControl::on_config_reload(void* argument){
+void TemperatureControl::load_config()
+{
 
     // General config
     this->set_m_code          = THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, set_m_code_checksum)->by_default(104)->as_number();
@@ -105,88 +124,88 @@ void TemperatureControl::on_config_reload(void* argument){
 
     this->designator          = THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, designator_checksum)->by_default(string("T"))->as_string();
 
-    // Values are here : http://reprap.org/wiki/Thermistor
-    this->r0   = 100000;
-    this->t0   = 25;
-    this->beta = 4066;
-    this->r1   = 0;
-    this->r2   = 4700;
-
-    // Preset values for various common types of thermistors
-    ConfigValue* thermistor = THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, thermistor_checksum);
-    if(       thermistor->value.compare("EPCOS100K"    ) == 0 ){ // Default
-    }else if( thermistor->value.compare("RRRF100K"     ) == 0 ){ this->beta = 3960;
-    }else if( thermistor->value.compare("RRRF10K"      ) == 0 ){ this->beta = 3964; this->r0 = 10000; this->r1 = 680; this->r2 = 1600;
-    }else if( thermistor->value.compare("Honeywell100K") == 0 ){ this->beta = 3974;
-    }else if( thermistor->value.compare("Semitec"      ) == 0 ){ this->beta = 4267;
-    }else if( thermistor->value.compare("HT100K"       ) == 0 ){ this->beta = 3990; }
-
-    // Preset values are overriden by specified values
-    this->r0 =                  THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, r0_checksum  )->by_default(this->r0  )->as_number();               // Stated resistance eg. 100K
-    this->t0 =                  THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, t0_checksum  )->by_default(this->t0  )->as_number();               // Temperature at stated resistance, eg. 25C
-    this->beta =                THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, beta_checksum)->by_default(this->beta)->as_number();               // Thermistor beta rating. See http://reprap.org/bin/view/Main/MeasuringThermistorBeta
-    this->r1 =                  THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, r1_checksum  )->by_default(this->r1  )->as_number();
-    this->r2 =                  THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, r2_checksum  )->by_default(this->r2  )->as_number();
-
-    this->preset1 =             THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, preset1_checksum)->by_default(0)->as_number();
-    this->preset2 =             THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, preset2_checksum)->by_default(0)->as_number();
-
-
-    // Thermistor math
-    j = (1.0 / beta);
-    k = (1.0 / (t0 + 273.15));
+    // Heater pin
+    this->heater_pin.from_string( THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, heater_pin_checksum)->by_default("nc")->as_string());
+    if(this->heater_pin.connected()){
+        this->readonly= false;
+        this->heater_pin.as_output();
 
-    // sigma-delta output modulation
-    this->o = 0;
+    } else {
+        this->readonly= true;
+    }
 
-    // Thermistor pin for ADC readings
-    this->thermistor_pin.from_string(THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, thermistor_pin_checksum )->required()->as_string());
-    THEKERNEL->adc->enable_pin(&thermistor_pin);
+    // For backward compatibility, default to a thermistor sensor.
+    std::string sensor_type = THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, sensor_checksum)->by_default("thermistor")->as_string();
+
+    // Instantiate correct sensor (TBD: TempSensor factory?)
+    delete sensor;
+    sensor = nullptr; // In case we fail to create a new sensor.
+    if(sensor_type.compare("thermistor") == 0) {
+        sensor = new Thermistor();
+    } else if(sensor_type.compare("max31855") == 0) {
+        sensor = new Max31855();
+    } else {
+        sensor = new TempSensor(); // A dummy implementation
+    }
+    sensor->UpdateConfig(temperature_control_checksum, this->name_checksum);
 
-    // Heater pin
-    this->heater_pin.from_string(    THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, heater_pin_checksum)->required()->as_string())->as_output();
-    this->heater_pin.max_pwm(        THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, max_pwm_checksum)->by_default(255)->as_number() );
+    this->preset1 = THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, preset1_checksum)->by_default(0)->as_number();
+    this->preset2 = THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, preset2_checksum)->by_default(0)->as_number();
 
-    this->heater_pin.set(0);
 
-    // used to enable bang bang control of heater
-    this->use_bangbang= THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, bang_bang_checksum)->by_default(false)->as_bool();
-    this->hysteresis= THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, hysteresis_checksum)->by_default(2)->as_number();
+    // sigma-delta output modulation
+    this->o = 0;
 
-    set_low_on_debug(heater_pin.port_number, heater_pin.pin);
+    if(!this->readonly) {
+        // used to enable bang bang control of heater
+        this->use_bangbang = THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, bang_bang_checksum)->by_default(false)->as_bool();
+        this->hysteresis = THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, hysteresis_checksum)->by_default(2)->as_number();
+        this->heater_pin.max_pwm( THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, max_pwm_checksum)->by_default(255)->as_number() );
+        this->heater_pin.set(0);
+        set_low_on_debug(heater_pin.port_number, heater_pin.pin);
+        // activate SD-DAC timer
+        THEKERNEL->slow_ticker->attach( THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, pwm_frequency_checksum)->by_default(2000)->as_number(), &heater_pin, &Pwm::on_tick);
+    }
 
-    // activate SD-DAC timer
-    THEKERNEL->slow_ticker->attach( THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, pwm_frequency_checksum)->by_default(2000)->as_number() , &heater_pin, &Pwm::on_tick);
 
     // reading tick
     THEKERNEL->slow_ticker->attach( this->readings_per_second, this, &TemperatureControl::thermistor_read_tick );
-    this->PIDdt= 1.0 / this->readings_per_second;
+    this->PIDdt = 1.0 / this->readings_per_second;
 
     // PID
     setPIDp( THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, p_factor_checksum)->by_default(10 )->as_number() );
     setPIDi( THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, i_factor_checksum)->by_default(0.3f)->as_number() );
     setPIDd( THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, d_factor_checksum)->by_default(200)->as_number() );
-    // set to the same as max_pwm by default
-    this->i_max = THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, i_max_checksum   )->by_default(this->heater_pin.max_pwm())->as_number();
+
+    if(!this->readonly) {
+        // set to the same as max_pwm by default
+        this->i_max = THEKERNEL->config->value(temperature_control_checksum, this->name_checksum, i_max_checksum   )->by_default(this->heater_pin.max_pwm())->as_number();
+    }
+
     this->iTerm = 0.0;
-    this->lastInput= -1.0;
+    this->lastInput = -1.0;
     this->last_reading = 0.0;
 }
 
-void TemperatureControl::on_gcode_received(void* argument){
-    Gcode* gcode = static_cast<Gcode*>(argument);
+void TemperatureControl::on_gcode_received(void *argument)
+{
+    Gcode *gcode = static_cast<Gcode *>(argument);
     if (gcode->has_m) {
-        // Get temperature
-        if( gcode->m == this->get_m_code ){
+
+        if( gcode->m == this->get_m_code ) {
             char buf[32]; // should be big enough for any status
-            int n= snprintf(buf, sizeof(buf), "%s:%3.1f /%3.1f @%d ", this->designator.c_str(), this->get_temperature(), ((target_temperature == UNDEFINED)?0.0:target_temperature), this->o);
+            int n = snprintf(buf, sizeof(buf), "%s:%3.1f /%3.1f @%d ", this->designator.c_str(), this->get_temperature(), ((target_temperature == UNDEFINED) ? 0.0 : target_temperature), this->o);
             gcode->txt_after_ok.append(buf, n);
             gcode->mark_as_taken();
+            return;
+        }
+
+        // readonly sensors don't handle the rest
+        if(this->readonly) return;
 
-        } else if (gcode->m == 301) {
+        if (gcode->m == 301) {
             gcode->mark_as_taken();
-            if (gcode->has_letter('S') && (gcode->get_value('S') == this->pool_index))
-            {
+            if (gcode->has_letter('S') && (gcode->get_value('S') == this->pool_index)) {
                 if (gcode->has_letter('P'))
                     setPIDp( gcode->get_value('P') );
                 if (gcode->has_letter('I'))
@@ -197,59 +216,54 @@ void TemperatureControl::on_gcode_received(void* argument){
                     this->i_max    = gcode->get_value('X');
             }
             //gcode->stream->printf("%s(S%d): Pf:%g If:%g Df:%g X(I_max):%g Pv:%g Iv:%g Dv:%g O:%d\n", this->designator.c_str(), this->pool_index, this->p_factor, this->i_factor/this->PIDdt, this->d_factor*this->PIDdt, this->i_max, this->p, this->i, this->d, o);
-            gcode->stream->printf("%s(S%d): Pf:%g If:%g Df:%g X(I_max):%g O:%d\n", this->designator.c_str(), this->pool_index, this->p_factor, this->i_factor/this->PIDdt, this->d_factor*this->PIDdt, this->i_max, o);
-
-        } else if (gcode->m == 303) {
-            if (gcode->has_letter('E') && (gcode->get_value('E') == this->pool_index)) {
-                gcode->mark_as_taken();
-                float target = 150.0;
-                if (gcode->has_letter('S')) {
-                    target = gcode->get_value('S');
-                    gcode->stream->printf("Target: %5.1f\n", target);
-                }
-                int ncycles= 8;
-                if (gcode->has_letter('C')) {
-                    ncycles= gcode->get_value('C');
-                }
-                gcode->stream->printf("Start PID tune, command is %s\n", gcode->command.c_str());
-                this->pool->PIDtuner->begin(this, target, gcode->stream, ncycles);
-            }
+            gcode->stream->printf("%s(S%d): Pf:%g If:%g Df:%g X(I_max):%g O:%d\n", this->designator.c_str(), this->pool_index, this->p_factor, this->i_factor / this->PIDdt, this->d_factor * this->PIDdt, this->i_max, o);
 
-        } else if (gcode->m == 500 || gcode->m == 503){// M500 saves some volatile settings to config override file, M503 just prints the settings
-            gcode->stream->printf(";PID settings:\nM301 S%d P%1.4f I%1.4f D%1.4f\n", this->pool_index, this->p_factor, this->i_factor/this->PIDdt, this->d_factor*this->PIDdt);
+        } else if (gcode->m == 500 || gcode->m == 503) { // M500 saves some volatile settings to config override file, M503 just prints the settings
+            gcode->stream->printf(";PID settings:\nM301 S%d P%1.4f I%1.4f D%1.4f\n", this->pool_index, this->p_factor, this->i_factor / this->PIDdt, this->d_factor * this->PIDdt);
             gcode->mark_as_taken();
 
-        } else if( ( gcode->m == this->set_m_code || gcode->m == this->set_and_wait_m_code ) && gcode->has_letter('S') ) {
-            // Attach gcodes to the last block for on_gcode_execute
-            THEKERNEL->conveyor->append_gcode(gcode);
+        } else if( ( gcode->m == this->set_m_code || gcode->m == this->set_and_wait_m_code ) && gcode->has_letter('S')) {
+            // this only gets handled if it is not controlle dby the tool manager or is active in the toolmanager
+            this->active = true;
+
+            // this is safe as old configs as well as single extruder configs the toolmanager will not be running so will return false
+            // this will also ignore anything that the tool manager is not controlling and return false, otherwise it returns the active tool
+            void *returned_data;
+            bool ok = PublicData::get_value( tool_manager_checksum, is_active_tool_checksum, this->name_checksum, &returned_data );
+            if (ok) {
+                uint16_t active_tool_name =  *static_cast<uint16_t *>(returned_data);
+                this->active = (active_tool_name == this->name_checksum);
+            }
+
+            if(this->active) {
+                // Attach gcodes to the last block for on_gcode_execute
+                THEKERNEL->conveyor->append_gcode(gcode);
 
-            // push an empty block if we have to wait, so the Planner can get things right, and we can prevent subsequent non-move gcodes from executing
-            if (gcode->m == this->set_and_wait_m_code)
-                // ensure that no subsequent gcodes get executed with our M109 or similar
-                THEKERNEL->conveyor->queue_head_block();
+                // push an empty block if we have to wait, so the Planner can get things right, and we can prevent subsequent non-move gcodes from executing
+                if (gcode->m == this->set_and_wait_m_code) {
+                    // ensure that no subsequent gcodes get executed with our M109 or similar
+                    THEKERNEL->conveyor->queue_head_block();
+                }
+            }
         }
     }
 }
 
-void TemperatureControl::on_gcode_execute(void* argument){
-    Gcode* gcode = static_cast<Gcode*>(argument);
-    if( gcode->has_m){
+void TemperatureControl::on_gcode_execute(void *argument)
+{
+    Gcode *gcode = static_cast<Gcode *>(argument);
+    if( gcode->has_m) {
         if (((gcode->m == this->set_m_code) || (gcode->m == this->set_and_wait_m_code))
-            && gcode->has_letter('S'))
-        {
+            && gcode->has_letter('S') && this->active) {
             float v = gcode->get_value('S');
 
-            if (v == 0.0)
-            {
+            if (v == 0.0) {
                 this->target_temperature = UNDEFINED;
-                this->heater_pin.set((this->o=0));
-            }
-            else
-            {
+                this->heater_pin.set((this->o = 0));
+            } else {
                 this->set_desired_temperature(v);
 
-                if( gcode->m == this->set_and_wait_m_code)
-                {
+                if( gcode->m == this->set_and_wait_m_code && !this->waiting) {
                     THEKERNEL->pauser->take();
                     this->waiting = true;
                 }
@@ -258,35 +272,46 @@ void TemperatureControl::on_gcode_execute(void* argument){
     }
 }
 
-void TemperatureControl::on_get_public_data(void* argument){
-    PublicDataRequest* pdr = static_cast<PublicDataRequest*>(argument);
+void TemperatureControl::on_get_public_data(void *argument)
+{
+    PublicDataRequest *pdr = static_cast<PublicDataRequest *>(argument);
 
     if(!pdr->starts_with(temperature_control_checksum)) return;
 
-    if(!pdr->second_element_is(this->name_checksum)) return; // will be bed or hotend
+    if(pdr->second_element_is(pool_index_checksum)) {
+        // asking for our instance pointer if we have this pool_index
+        if(pdr->third_element_is(this->pool_index)) {
+            static void *return_data;
+            return_data = this;
+            pdr->set_data_ptr(&return_data);
+            pdr->set_taken();
+        }
+        return;
+
+    }else if(!pdr->second_element_is(this->name_checksum)) return;
 
     // ok this is targeted at us, so send back the requested data
     if(pdr->third_element_is(current_temperature_checksum)) {
-        // this must be static as it will be accessed long after we have returned
-        static struct pad_temperature temp_return;
-        temp_return.current_temperature= this->get_temperature();
-        temp_return.target_temperature= (target_temperature == UNDEFINED) ? 0 : this->target_temperature;
-        temp_return.pwm= this->o;
-
-        pdr->set_data_ptr(&temp_return);
+        this->public_data_return.current_temperature = this->get_temperature();
+        this->public_data_return.target_temperature = (target_temperature == UNDEFINED) ? 0 : this->target_temperature;
+        this->public_data_return.pwm = this->o;
+        this->public_data_return.designator= this->designator;
+        pdr->set_data_ptr(&this->public_data_return);
         pdr->set_taken();
     }
+
 }
 
-void TemperatureControl::on_set_public_data(void* argument){
-    PublicDataRequest* pdr = static_cast<PublicDataRequest*>(argument);
+void TemperatureControl::on_set_public_data(void *argument)
+{
+    PublicDataRequest *pdr = static_cast<PublicDataRequest *>(argument);
 
     if(!pdr->starts_with(temperature_control_checksum)) return;
 
-    if(!pdr->second_element_is(this->name_checksum)) return; // will be bed or hotend
+    if(!pdr->second_element_is(this->name_checksum)) return;
 
     // ok this is targeted at us, so set the temp
-    float t= *static_cast<float*>(pdr->get_data_ptr());
+    float t = *static_cast<float *>(pdr->get_data_ptr());
     this->set_desired_temperature(t);
     pdr->set_taken();
 }
@@ -303,45 +328,32 @@ void TemperatureControl::set_desired_temperature(float desired_temperature)
         heater_pin.set((this->o = 0));
 }
 
-float TemperatureControl::get_temperature(){
+float TemperatureControl::get_temperature()
+{
     return last_reading;
 }
 
-float TemperatureControl::adc_value_to_temperature(int adc_value)
+uint32_t TemperatureControl::thermistor_read_tick(uint32_t dummy)
 {
-    if ((adc_value == 4095) || (adc_value == 0))
-        return INFINITY;
-    float r = r2 / ((4095.0 / adc_value) - 1.0);
-    if (r1 > 0)
-        r = (r1 * r) / (r1 - r);
-    return (1.0 / (k + (j * log(r / r0)))) - 273.15;
-}
-
-uint32_t TemperatureControl::thermistor_read_tick(uint32_t dummy){
-    int r = new_thermistor_reading();
-
-    float temperature = adc_value_to_temperature(r);
+    float temperature = sensor->get_temperature();
+    if(this->readonly) {
+        last_reading = temperature;
+        return 0;
+    }
 
-    if (target_temperature > 0)
-    {
-        if ((r <= 1) || (r >= 4094))
-        {
+    if (target_temperature > 0) {
+        if (isinf(temperature)) {
             this->min_temp_violated = true;
             target_temperature = UNDEFINED;
-            heater_pin.set((this->o=0));
-        }
-        else
-        {
+            heater_pin.set((this->o = 0));
+        } else {
             pid_process(temperature);
-            if ((temperature > target_temperature) && waiting)
-            {
+            if ((temperature > target_temperature) && waiting) {
                 THEKERNEL->pauser->release();
                 waiting = false;
             }
         }
-    }
-    else
-    {
+    } else {
         heater_pin.set((this->o = 0));
     }
     last_reading = temperature;
@@ -356,19 +368,19 @@ void TemperatureControl::pid_process(float temperature)
     if(use_bangbang) {
         // bang bang is very simple, if temp is < target - hysteresis turn on full else if  temp is > target + hysteresis turn heater off
         // good for relays
-        if(temperature > (target_temperature+hysteresis) && this->o > 0) {
+        if(temperature > (target_temperature + hysteresis) && this->o > 0) {
             heater_pin.set(false);
-            this->o= 0; // for display purposes only
+            this->o = 0; // for display purposes only
 
-        }else if(temperature < (target_temperature-hysteresis) && this->o <= 0) {
+        } else if(temperature < (target_temperature - hysteresis) && this->o <= 0) {
             if(heater_pin.max_pwm() >= 255) {
                 // turn on full
                 this->heater_pin.set(true);
-                this->o= 255; // for display purposes only
-            }else{
+                this->o = 255; // for display purposes only
+            } else {
                 // only to whatever max pwm is configured
                 this->heater_pin.pwm(heater_pin.max_pwm());
-                this->o= heater_pin.max_pwm(); // for display purposes only
+                this->o = heater_pin.max_pwm(); // for display purposes only
             }
         }
         return;
@@ -380,12 +392,12 @@ void TemperatureControl::pid_process(float temperature)
     if (this->iTerm > this->i_max) this->iTerm = this->i_max;
     else if (this->iTerm < 0.0) this->iTerm = 0.0;
 
-    if(this->lastInput < 0.0) this->lastInput= temperature; // set first time
-    float d= (temperature - this->lastInput);
+    if(this->lastInput < 0.0) this->lastInput = temperature; // set first time
+    float d = (temperature - this->lastInput);
 
     // calculate the PID output
     // TODO does this need to be scaled by max_pwm/256? I think not as p_factor already does that
-    this->o = (this->p_factor*error) + this->iTerm - (this->d_factor*d);
+    this->o = (this->p_factor * error) + this->iTerm - (this->d_factor * d);
 
     if (this->o >= heater_pin.max_pwm())
         this->o = heater_pin.max_pwm();
@@ -393,38 +405,26 @@ void TemperatureControl::pid_process(float temperature)
         this->o = 0;
 
     this->heater_pin.pwm(this->o);
-    this->lastInput= temperature;
-}
-
-int TemperatureControl::new_thermistor_reading()
-{
-    int last_raw = THEKERNEL->adc->read(&thermistor_pin);
-    if (queue.size() >= queue.capacity()) {
-        uint16_t l;
-        queue.pop_front(l);
-    }
-    uint16_t r = last_raw;
-    queue.push_back(r);
-    for (int i=0; i<queue.size(); i++)
-      median_buffer[i] = *queue.get_ref(i);
-    uint16_t m = median_buffer[quick_median(median_buffer, queue.size())];
-    return m;
+    this->lastInput = temperature;
 }
 
-void TemperatureControl::on_second_tick(voidargument)
+void TemperatureControl::on_second_tick(void *argument)
 {
     if (waiting)
-        THEKERNEL->streams->printf("%s:%3.1f /%3.1f @%d\n", designator.c_str(), get_temperature(), ((target_temperature == UNDEFINED)?0.0:target_temperature), o);
+        THEKERNEL->streams->printf("%s:%3.1f /%3.1f @%d\n", designator.c_str(), get_temperature(), ((target_temperature == UNDEFINED) ? 0.0 : target_temperature), o);
 }
 
-void TemperatureControl::setPIDp(float p) {
-    this->p_factor= p;
+void TemperatureControl::setPIDp(float p)
+{
+    this->p_factor = p;
 }
 
-void TemperatureControl::setPIDi(float i) {
-    this->i_factor= i*this->PIDdt;
+void TemperatureControl::setPIDi(float i)
+{
+    this->i_factor = i * this->PIDdt;
 }
 
-void TemperatureControl::setPIDd(float d) {
-    this->d_factor= d/this->PIDdt;
+void TemperatureControl::setPIDd(float d)
+{
+    this->d_factor = d / this->PIDdt;
 }