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/******************************************************************
* Thermocouple.h - type description for temperature measurement.
*
* this should be generalized into a temperature sensor.
*
*/
#ifndef THERMOCOUPLE_H
#define THERMOCOUPLE_H
#include <SPI.h>
#include "Adafruit_MAX31855.h"
#include "Configuration.h"
#include "TaskScheduler.h"
#include "Monitor.h"
#include "Machine.h"
static double CtoF(double C) {
return (9.0*C)/5.0 + 32.0;
}
// output temperature values when they have changed
static void readPlate1Temp();
static void readPlate2Temp();
static void readAmbientTemp();
static void TS1 (uint8_t kwIndex, uint8_t verb,char *args);
static void TS2 (uint8_t kwIndex, uint8_t verb,char *args);
static void AMT (uint8_t kwIndex, uint8_t verb,char *args);
class Thermocouples {
private:
Adafruit_MAX31855 _therm1;
double _temp1;
bool _temp1changed;
Adafruit_MAX31855 _therm2;
double _temp2;
bool _temp2changed;
// ambient temp is made up of the avg ambient temp from each thermocouple
double _ambientTemp;
bool _ambChanged;
Task _temp1Read;
Task _temp2Read;
Task _ambientTempRead;
public:
Thermocouples() : _therm1(TS1_CS_PIN), _therm2(TS2_CS_PIN) {}
Adafruit_MAX31855* therm1() {return &_therm1;}
Adafruit_MAX31855* therm2() {return &_therm2;}
// temperature 1 changes
bool updateTemp1() {
double tol = 1;
double temp = therm1()->readFarenheit();
_temp1changed = fabs(_temp1 - temp) >= tol;
if (_temp1changed)
_temp1 = temp;
return _temp1changed;
}
void setTemp1Changed(bool v) {
_temp1changed = v;
}
// temperature 2 changes
bool updateTemp2() {
double tol = 1;
double temp = therm2()->readFarenheit();
_temp2changed = fabs(_temp2 - temp) >= tol;
if (_temp2changed)
_temp2 = temp;
return _temp2changed;
}
void setTemp2Changed(bool v) {
_temp2changed = v;
}
// Check for Ambient temperature changes
bool updateAmbientTemp() {
double tol = 1;
// Farenheit temperature
double avgTemp = CtoF((therm1()->readInternal() + therm2()->readInternal())/2.0);
_ambChanged = fabs(_ambientTemp - avgTemp) >= tol;
if (_ambChanged) {
_ambientTemp = avgTemp;
}
return _ambChanged;
}
void setAmbChanged(bool v) {
_ambChanged = v;
}
double getTemp1() { return _temp1; }
double getTemp2() { return _temp2; }
double getAmb() { return _ambientTemp; }
bool updateTemp2(double temp);
void init() {
monitor.registerAction(_TS1_, &TS1);
monitor.registerAction(_TS2_, &TS2);
monitor.registerAction(_AMT_, &AMT);
// set tasks for sceduled reads
_temp1Read.set(100L, TASK_FOREVER, &readPlate1Temp);
machine.todolist.addTask(_temp1Read);
_temp1Read.enable();
_temp2Read.set(100L, TASK_FOREVER, &readPlate2Temp);
machine.todolist.addTask(_temp2Read);
_temp2Read.enable();
_ambientTempRead.set(100L, TASK_FOREVER, &readAmbientTemp);
machine.todolist.addTask(_ambientTempRead);
_ambientTempRead.enable();
}
};
extern Thermocouples thermocouple;
/*----------------------------------------------------------------------
* Schedule Callbacks
*--------------------------------------------------------------------*/
// return the temp only if the plate temp has changed
static void readPlate1Temp() {
if (thermocouple.updateTemp1()) {
double _f = thermocouple.getTemp1();
monitor.update("TS1", "%d.%.02d", int(_f),int(abs(_f - int(_f))*100));
thermocouple.setTemp1Changed(false);
}
}
static void readPlate2Temp() {
if (thermocouple.updateTemp2()) {
double _f = thermocouple.getTemp2();
monitor.update("TS2", "%d.%.02d", int(_f),int(abs(_f - int(_f))*100));
thermocouple.setTemp2Changed(false);
}
}
static void readAmbientTemp() {
if (thermocouple.updateAmbientTemp()) {
double _f = thermocouple.getAmb();
monitor.update("AMT", "%d.%.02d", int(_f),int(abs(_f - int(_f))*100));
thermocouple.setAmbChanged(false);
}
}
/*----------------------------------------------------------------------
* Monitor Callbacks
*--------------------------------------------------------------------*/
// unconditionally return temp
static void TS1 (uint8_t kwIndex, uint8_t verb,char *args) {
double _f = thermocouple.getTemp1();
monitor.update("TS1", "%d.%.02d", int(_f),int(abs(_f - int(_f))*100));
}
static void TS2 (uint8_t kwIndex, uint8_t verb,char *args) {
double _f = thermocouple.getTemp2();
monitor.update("TS2", "%d.%.02d", int(_f),int(abs(_f - int(_f))*100));
}
static void AMT (uint8_t kwIndex, uint8_t verb,char *args) {
double _f = thermocouple.getAmb();
monitor.update("AMT", "%d.%.02d", int(_f),int(abs(_f - int(_f))*100));
}
#endif // THERMOCOUPLE_H
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