Ollie Matthews / Heater

Heater for threaded program

Dependents:   LEX_Threaded_Programming

Heater.h@16:cd837b230b09, 2019-07-24 (annotated)

Committer:
omatthews
Date:
Wed Jul 24 14:29:44 2019 +0000
Revision:
16:cd837b230b09
Parent:
15:e7838491c104
Child:
17:0bfed0e96927
Works quite well - needed to pass by pointer to change duty cycle!

Who changed what in which revision?

UserRevisionLine numberNew contents of line
omatthews 0:4e33cc8171f4 1 /*------------------------------------------------------------------------------
omatthews 0:4e33cc8171f4 2 Library header file for heater operations
omatthews 0:4e33cc8171f4 3 Date: 16/07/2018
omatthews 0:4e33cc8171f4 4
omatthews 0:4e33cc8171f4 5
omatthews 0:4e33cc8171f4 6 ------------------------------------------------------------------------------*/
omatthews 0:4e33cc8171f4 7
omatthews 0:4e33cc8171f4 8 #ifndef Heater_H
omatthews 0:4e33cc8171f4 9 #define Heater_H
omatthews 0:4e33cc8171f4 10 #include "mbed.h"
omatthews 0:4e33cc8171f4 11 #include "ADS8568_ADC.h"
omatthews 0:4e33cc8171f4 12
omatthews 14:f266bf960b8d 13 #define MEAS_DELAY 80 // measurement delay for ADC
omatthews 12:8a048f111140 14 #define WAIT_DELAY 5 // wait delay for ADC
omatthews 12:8a048f111140 15
omatthews 16:cd837b230b09 16 #define N_ROLL_AVG 1 // rolling average for R values
omatthews 1:4435d407d827 17 #define ALL_CH 15 //value of convst bus to read all chanels simultaneosly
omatthews 14:f266bf960b8d 18 #define Kd 0.5f //proportional gain
omatthews 14:f266bf960b8d 19 #define Ki 1.0f //Integrator gain
omatthews 0:4e33cc8171f4 20
omatthews 0:4e33cc8171f4 21 class Heater
omatthews 0:4e33cc8171f4 22 {
omatthews 7:59ece353eea2 23 //This class provides the interface through which each heater can be controlled
omatthews 0:4e33cc8171f4 24 public:
omatthews 0:4e33cc8171f4 25 /** Constructor
omatthews 7:59ece353eea2 26 * @param i_port, the port for the current in the ADC
omatthews 7:59ece353eea2 27 * @param v_port, the port for the voltage in the ADC
omatthews 7:59ece353eea2 28 * @param drive, the motor drive
omatthews 7:59ece353eea2 29 * @param R_ref, the target value for R
omatthews 0:4e33cc8171f4 30 */
omatthews 16:cd837b230b09 31 Heater(int i_port, int v_port, PwmOut * drive, float corr_grad, float corr_int, float R_ref = 1);
omatthews 0:4e33cc8171f4 32
omatthews 0:4e33cc8171f4 33 //Public member functions
omatthews 0:4e33cc8171f4 34
omatthews 2:7f15386fcc90 35 void read();
omatthews 0:4e33cc8171f4 36 void hold(int hold_time);
omatthews 7:59ece353eea2 37 void ramp_R(int ramp_time, float R_final, float R_start);
omatthews 7:59ece353eea2 38 void ramp_T(int ramp_time, float T_final, float T_start);
omatthews 11:785a0329f802 39 void output();
omatthews 7:59ece353eea2 40
omatthews 7:59ece353eea2 41 //Conversions between temperature and resistance
omatthews 7:59ece353eea2 42 float R_to_T(float R);
omatthews 7:59ece353eea2 43 float T_to_R(float T);
omatthews 1:4435d407d827 44
omatthews 1:4435d407d827 45
omatthews 2:7f15386fcc90 46
omatthews 2:7f15386fcc90 47 //Getters and setters
omatthews 7:59ece353eea2 48 void Set_T_ref(float T);
omatthews 7:59ece353eea2 49 void Set_R_ref(float R);
omatthews 15:e7838491c104 50 void Set_D(float D);
omatthews 2:7f15386fcc90 51 int Get_i();
omatthews 2:7f15386fcc90 52 int Get_v();
omatthews 0:4e33cc8171f4 53 float Get_R();
omatthews 7:59ece353eea2 54 float Get_T();
omatthews 7:59ece353eea2 55
omatthews 0:4e33cc8171f4 56
omatthews 1:4435d407d827 57 void turn_on();
omatthews 1:4435d407d827 58 void turn_off();
omatthews 0:4e33cc8171f4 59
omatthews 0:4e33cc8171f4 60
omatthews 0:4e33cc8171f4 61
omatthews 0:4e33cc8171f4 62 protected:
omatthews 0:4e33cc8171f4 63
omatthews 0:4e33cc8171f4 64
omatthews 2:7f15386fcc90 65 int curr;
omatthews 2:7f15386fcc90 66 int v;
omatthews 0:4e33cc8171f4 67 float R;
omatthews 7:59ece353eea2 68 float R_ref;
omatthews 12:8a048f111140 69 float error;
omatthews 12:8a048f111140 70 float error_integrated;
omatthews 1:4435d407d827 71
omatthews 0:4e33cc8171f4 72 int i_port;
omatthews 0:4e33cc8171f4 73 int v_port;
omatthews 16:cd837b230b09 74 PwmOut * drive;
omatthews 16:cd837b230b09 75
omatthews 7:59ece353eea2 76 //Heater correlations give temperature for a given resistance (assume linear relationship)
omatthews 7:59ece353eea2 77 float corr_grad;
omatthews 7:59ece353eea2 78 float corr_int;
omatthews 0:4e33cc8171f4 79
omatthews 0:4e33cc8171f4 80 };
omatthews 0:4e33cc8171f4 81
omatthews 8:5da71ae16115 82 #endif
omatthews 8:5da71ae16115 83