reflow/firmware/oven_control.h

#ifndef _H_OVEN_CTL
#define _H_OVEN_CTL

/*
// operational states
#define OP_CONFIG 0
#define OP_STAND_ALONE 1
#define OP_REMOTE 2*/

enum OVEN_MODE {
  OM_CONFIG,
  OM_CALIBRATION,
  OM_STAND_ALONE,
  OM_REMOTE
};

enum COMMAND {
  SEND_CONFIG,
  RECV_CONFIG,
  SEND_STATE,
  RECV_STEPS
};

#define E_DT_MIN 1 // temperature dt too small
#define E_DT_MAX 2 // temperature dt too big
#define E_TIME_MAX 4 // reflow process does take too long
#define E_TS_TOO_SHORT 8 // Ts duration too short
#define E_TS_TOO_LONG 16 // Ts duration too long
#define E_TL_TOO_SHORT 32 // Tl duration too short
#define E_TL_TOO_LONG 64 // Tl duration too long
#define E_TP_TOO_SHORT 128 // Tp duration too short
#define E_TP_TOO_LONG 256 // Tp duration too long
#define E_CONFIG 512 // error happened in config state


// profile states
enum PROFILE_STATE {
  START_STATE,
  PREHEAT_STATE,
  RAMP_UP_STATE,
  TAL_FIRST_STATE,
  PEAK_STATE,
  TAL_SECOND_STATE,
  RAMP_DOWN_STATE,
  END_STATE,
  ERROR_STATE
};


#include <Arduino.h>

class LiquidCrystal;
class DFR_Key;
class Profile;

extern Profile profile;

class OvenCtl {
public:

  OvenCtl();
  void loop();
//   void set_config_state();

private:

  // system time, timestamps and temperatures from sensors
  int time; // profile seconds
  int temperature; // actual oven temp
  int last_temperature; // last oven temp
  float actual_dt; // actual difference from last to actual temperatur


  // thermostat
  float set_min;
  float set_max;
  int set_dt_min;
  int set_dt_max;

  float ramp_up_hysteresis; // duration in seconds
  float ramp_down_hysteresis; // duration in seconds
  float actual_hysteresis;  // duration in seconds 

  // ui stuff
  boolean disable_checks;

  // state machine
  unsigned int error_condition;
  OVEN_MODE oven_mode;
  PROFILE_STATE profile_state;
  boolean is_oven_heating;

  void print_status();
  void control_oven();
  void set_temp(int, int, int, int);
  void get_temp();
  void check_dt();
  void check_max_duration();

//   void set_start_state();
//   void set_preheat_state();
//   void set_tal_first_state();
//   void set_ramp_up_state();
//   void set_peak_state();
//   void set_tal_second_state();
//   void set_ramp_down_state();
//   void set_end_state();
//   void set_error_state();

//   void handle_profile_states();
  void handle_stand_alone_state();
  void handle_remote_state();

//   void handle_config_state();
//   void handle_start_state();
//   void handle_ramp_up_state();
//   void handle_preheat_state();
//   void handle_tal_first_state();
//   void handle_peak_state();
//   void handle_tal_second_state();
//   void handle_ramp_down_state();
//   void handle_end_state();
//   void handle_error_state();

//   void check_Ts_duration_min();
//   void check_Ts_duration_max();
//   void check_Tl_duration_min();
//   void check_Tl_duration_max();
//   void check_Tp_duration_min();
//   void check_Tp_duration_max();

  // commands
  void send_state();
  void send_config();
  void recv_config();
  void dispatch_remote_cmd(COMMAND cmd);
};

#endif