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/*
* thermocycler.h - OpenPCR control software.
* Copyright (C) 2010-2011 Josh Perfetto. All Rights Reserved.
*
* OpenPCR control software 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.
*
* OpenPCR control software 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
* the OpenPCR control software. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _THERMOCYCLER_H_
#define _THERMOCYCLER_H_
#include "PID_v1.h"
#include "program.h"
class Display;
class SerialControl;
class Thermocycler {
public:
enum ProgramState {
EOff = 0,
EStartup,
EStopped,
ELidWait,
ERunning,
EComplete,
EError,
EClear //for Display clearing only
};
enum ThermalState {
EHolding = 0,
EHeating,
ECooling,
EIdle
};
enum ThermalDirection {
OFF,
HEAT,
COOL
};
Thermocycler(boolean restarted);
~Thermocycler();
// accessors
ProgramState GetProgramState() { return iProgramState; }
ThermalState GetThermalState();
Step* GetCurrentStep() { return ipCurrentStep; }
Cycle* GetDisplayCycle() { return ipDisplayCycle; }
int GetNumCycles();
int GetCurrentCycleNum();
const char* GetProgName() { return iszProgName; }
Display* GetDisplay() { return ipDisplay; }
ProgramComponentPool<Cycle, 4>& GetCyclePool() { return iCyclePool; }
ProgramComponentPool<Step, 20>& GetStepPool() { return iStepPool; }
boolean Ramping() { return iRamping; }
int GetPeltierPwm() { return iPeltierPwm; }
float GetPlateTemp() { return iPlateTemp; }
float GetLidTemp() { return iLidTemp; }
unsigned long GetTimeRemainingS() { return iEstimatedTimeRemainingS; }
unsigned long GetElapsedTimeS() { return (millis() - iProgramStartTimeMs) / 1000; }
// control
void SetProgram(Cycle* pProgram, Cycle* pDisplayCycle, const char* szProgName, int lidTemp); //takes ownership of cycles
void Stop();
PcrStatus Start();
void ProcessCommand(SCommand& command);
// internal
void Loop();
private:
void CheckPower();
void ReadLidTemp();
void ReadPlateTemp();
void ControlPeltier();
void ControlLid();
void UpdateEta();
//util functions
void SetPlateTarget(double target);
void SetLidTarget(double target);
void SetPeltier(ThermalDirection dir, int pwm);
uint8_t mcp342xWrite(uint8_t config);
uint8_t mcp342xRead(int32_t &data);
float TableLookup(const unsigned long lookupTable[], unsigned int tableSize, int startValue, unsigned long searchValue);
float TableLookup(const unsigned int lookupTable[], unsigned int tableSize, int startValue, unsigned long searchValue);
private:
// constants
static const int PLATE_TEMP_SENSOR_PIN = 0;
// components
Display* ipDisplay;
SerialControl* ipSerialControl;
ProgramComponentPool<Cycle, 4> iCyclePool;
ProgramComponentPool<Step, 20> iStepPool;
// state
ProgramState iProgramState;
double iPlateTemp;
double iTargetPlateTemp;
double iLidTemp;
double iTargetLidTemp;
Cycle* ipProgram;
Cycle* ipDisplayCycle;
char iszProgName[21];
Step* ipCurrentStep;
unsigned long iCycleStartTime;
boolean iRamping;
boolean iDecreasing;
enum ControlMode {
EBangBang,
EPID
};
boolean iRestarted;
ControlMode iPlateControlMode;
ControlMode iLidControlMode;
// peltier control
PID iPlatePid;
PID iLidPid;
ThermalDirection iThermalDirection; //holds actual real-time state
double iPeltierPwm;
double iLidPwm;
// program eta calculation
unsigned long iProgramStartTimeMs;
unsigned long iProgramHoldDurationS;
double iProgramRampDegrees;
double iElapsedRampDegrees;
unsigned long iElapsedRampDurationMs;
double iRampStartTemp;
unsigned long iRampStartTime;
unsigned long iEstimatedTimeRemainingS;
boolean iHasCooled;
};
#endif
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