Ollie Matthews / Heater

Heater for threaded program

Dependents:   LEX_Threaded_Programming

Heater.h@12:8a048f111140, 2019-07-23 (annotated)

Committer:
omatthews
Date:
Tue Jul 23 09:41:53 2019 +0000
Revision:
12:8a048f111140
Parent:
11:785a0329f802
Child:
14:f266bf960b8d
PWM oscillating heavily

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 12:8a048f111140 13 #define MEAS_DELAY 50 // measurement delay for ADC
omatthews 12:8a048f111140 14 #define WAIT_DELAY 5 // wait delay for ADC
omatthews 12:8a048f111140 15
omatthews 12:8a048f111140 16 #define N_ROLL_AVG 3 // rolling average for R values
omatthews 1:4435d407d827 17 #define ALL_CH 15 //value of convst bus to read all chanels simultaneosly
omatthews 12:8a048f111140 18 #define Kd 20 //proportional gain
omatthews 12:8a048f111140 19 #define Ki 30
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 12:8a048f111140 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 2:7f15386fcc90 50 int Get_i();
omatthews 2:7f15386fcc90 51 int Get_v();
omatthews 0:4e33cc8171f4 52 float Get_R();
omatthews 7:59ece353eea2 53 float Get_T();
omatthews 7:59ece353eea2 54
omatthews 0:4e33cc8171f4 55
omatthews 1:4435d407d827 56 void turn_on();
omatthews 1:4435d407d827 57 void turn_off();
omatthews 0:4e33cc8171f4 58
omatthews 0:4e33cc8171f4 59
omatthews 0:4e33cc8171f4 60
omatthews 0:4e33cc8171f4 61 protected:
omatthews 0:4e33cc8171f4 62
omatthews 0:4e33cc8171f4 63
omatthews 2:7f15386fcc90 64 int curr;
omatthews 2:7f15386fcc90 65 int v;
omatthews 0:4e33cc8171f4 66 float R;
omatthews 7:59ece353eea2 67 float R_ref;
omatthews 12:8a048f111140 68 float error;
omatthews 12:8a048f111140 69 float error_integrated;
omatthews 1:4435d407d827 70
omatthews 0:4e33cc8171f4 71 int i_port;
omatthews 0:4e33cc8171f4 72 int v_port;
omatthews 12:8a048f111140 73 PwmOut drive;
omatthews 7:59ece353eea2 74
omatthews 7:59ece353eea2 75 //Heater correlations give temperature for a given resistance (assume linear relationship)
omatthews 7:59ece353eea2 76 float corr_grad;
omatthews 7:59ece353eea2 77 float corr_int;
omatthews 0:4e33cc8171f4 78
omatthews 0:4e33cc8171f4 79 };
omatthews 0:4e33cc8171f4 80
omatthews 8:5da71ae16115 81 #endif
omatthews 8:5da71ae16115 82