Kazu Zamasu / Mbed 2 deprecated PreHeater-Rev2

PreHeater firmware product version rev0 include QEI pull up mode include LM26 analog input temperature sensor

Dependencies:   PID QEI SB1602E mbed-rtos mbed

PreHeater product. Final PCB version Rev0 firmware.

main.cpp@0:b2cea429ec0b, 2015-07-24 (annotated)

Committer:
kazu_zamasu
Date:
Fri Jul 24 18:08:18 2015 +0000
Revision:
0:b2cea429ec0b
ProductPreHeater-Rev0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kazu_zamasu 0:b2cea429ec0b 1 /*The MIT License (MIT)
kazu_zamasu 0:b2cea429ec0b 2
kazu_zamasu 0:b2cea429ec0b 3 Copyright (c) <2015> <Kazumichi Aoki>
kazu_zamasu 0:b2cea429ec0b 4
kazu_zamasu 0:b2cea429ec0b 5 Permission is hereby granted, free of charge, to any person obtaining a copy
kazu_zamasu 0:b2cea429ec0b 6 of this software and associated documentation files (the "Software"), to deal
kazu_zamasu 0:b2cea429ec0b 7 in the Software without restriction, including without limitation the rights
kazu_zamasu 0:b2cea429ec0b 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
kazu_zamasu 0:b2cea429ec0b 9 copies of the Software, and to permit persons to whom the Software is
kazu_zamasu 0:b2cea429ec0b 10 furnished to do so, subject to the following conditions:
kazu_zamasu 0:b2cea429ec0b 11
kazu_zamasu 0:b2cea429ec0b 12 The above copyright notice and this permission notice shall be included in
kazu_zamasu 0:b2cea429ec0b 13 all copies or substantial portions of the Software.
kazu_zamasu 0:b2cea429ec0b 14
kazu_zamasu 0:b2cea429ec0b 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
kazu_zamasu 0:b2cea429ec0b 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
kazu_zamasu 0:b2cea429ec0b 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
kazu_zamasu 0:b2cea429ec0b 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
kazu_zamasu 0:b2cea429ec0b 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
kazu_zamasu 0:b2cea429ec0b 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
kazu_zamasu 0:b2cea429ec0b 21 THE SOFTWARE.
kazu_zamasu 0:b2cea429ec0b 22 */
kazu_zamasu 0:b2cea429ec0b 23
kazu_zamasu 0:b2cea429ec0b 24
kazu_zamasu 0:b2cea429ec0b 25
kazu_zamasu 0:b2cea429ec0b 26 #include "mbed.h"
kazu_zamasu 0:b2cea429ec0b 27 #include "PID.h"
kazu_zamasu 0:b2cea429ec0b 28 #include "math.h"
kazu_zamasu 0:b2cea429ec0b 29 #include "SB1602E.h"
kazu_zamasu 0:b2cea429ec0b 30 #include "QEI.h"
kazu_zamasu 0:b2cea429ec0b 31 #include "rtos.h"
kazu_zamasu 0:b2cea429ec0b 32 //GPIO initilaize
kazu_zamasu 0:b2cea429ec0b 33 AnalogIn THAI(dp4);
kazu_zamasu 0:b2cea429ec0b 34 PwmOut out(dp18);
kazu_zamasu 0:b2cea429ec0b 35 DigitalOut ledR(dp17),ledG(dp25),ledB(dp27);
kazu_zamasu 0:b2cea429ec0b 36 InterruptIn RunPB(dp10);
kazu_zamasu 0:b2cea429ec0b 37 Serial pc(dp16, dp15); // tx, rx
kazu_zamasu 0:b2cea429ec0b 38
kazu_zamasu 0:b2cea429ec0b 39
kazu_zamasu 0:b2cea429ec0b 40 /* PID constant initialize Kc, Ti, Td, interval */
kazu_zamasu 0:b2cea429ec0b 41 #define P 0.1 //propotional band
kazu_zamasu 0:b2cea429ec0b 42 #define I 1.5 //Integral
kazu_zamasu 0:b2cea429ec0b 43 #define D 1.0 //Devide
kazu_zamasu 0:b2cea429ec0b 44 #define RATE 0.1 //update time sec
kazu_zamasu 0:b2cea429ec0b 45 #define InitialSP 30.0 // Boot Setpoint initial temeprature
kazu_zamasu 0:b2cea429ec0b 46 PID TIC(P, I, D, RATE);
kazu_zamasu 0:b2cea429ec0b 47
kazu_zamasu 0:b2cea429ec0b 48 /*LCD I2C pin initialize */
kazu_zamasu 0:b2cea429ec0b 49 char *init_massage = "Hello!";
kazu_zamasu 0:b2cea429ec0b 50 SB1602E lcd(dp5, dp27, init_massage); // SDA, SCL
kazu_zamasu 0:b2cea429ec0b 51 /*QEI initialize */
kazu_zamasu 0:b2cea429ec0b 52 #define ROTATE_PER_REVOLUTIONS 24
kazu_zamasu 0:b2cea429ec0b 53 QEI wheel(dp13, dp11, NC, ROTATE_PER_REVOLUTIONS, QEI::X2_ENCODING);
kazu_zamasu 0:b2cea429ec0b 54
kazu_zamasu 0:b2cea429ec0b 55 //Initial
kazu_zamasu 0:b2cea429ec0b 56 float temp_sv_input = InitialSP, waittime,OV_LL,ticout,qei,Bias;
kazu_zamasu 0:b2cea429ec0b 57 bool Run(false);
kazu_zamasu 0:b2cea429ec0b 58 double temp_pv,temp_cal;
kazu_zamasu 0:b2cea429ec0b 59 int rtostime;
kazu_zamasu 0:b2cea429ec0b 60
kazu_zamasu 0:b2cea429ec0b 61 /*PB control*/
kazu_zamasu 0:b2cea429ec0b 62 void runmode()
kazu_zamasu 0:b2cea429ec0b 63 {
kazu_zamasu 0:b2cea429ec0b 64 Run = !Run;
kazu_zamasu 0:b2cea429ec0b 65 }
kazu_zamasu 0:b2cea429ec0b 66
kazu_zamasu 0:b2cea429ec0b 67 void cal_temp(void const *argument)
kazu_zamasu 0:b2cea429ec0b 68 {
kazu_zamasu 0:b2cea429ec0b 69 while(1) {
kazu_zamasu 0:b2cea429ec0b 70 /*input for change to 0 to 100% range by 30C to 120C */
kazu_zamasu 0:b2cea429ec0b 71 /*Temperature setpoint low high range */
kazu_zamasu 0:b2cea429ec0b 72 #define RangeSPL 30.0 //Celcius low side temperature
kazu_zamasu 0:b2cea429ec0b 73 temp_sv_input = wheel.getPulses() / 20.0 + RangeSPL;
kazu_zamasu 0:b2cea429ec0b 74 if (temp_sv_input <= RangeSPL) {
kazu_zamasu 0:b2cea429ec0b 75 temp_sv_input = RangeSPL;
kazu_zamasu 0:b2cea429ec0b 76 #define RangeSPH 100.0 //Celcius high side temperature
kazu_zamasu 0:b2cea429ec0b 77 } else if (temp_sv_input >= RangeSPH) {
kazu_zamasu 0:b2cea429ec0b 78 temp_sv_input = RangeSPH;
kazu_zamasu 0:b2cea429ec0b 79 }
kazu_zamasu 0:b2cea429ec0b 80
kazu_zamasu 0:b2cea429ec0b 81 /*six order polynomial calculation value
kazu_zamasu 0:b2cea429ec0b 82 Thermister pull up resiter 560R
kazu_zamasu 0:b2cea429ec0b 83 Thermister B value 3380K
kazu_zamasu 0:b2cea429ec0b 84 Thermister Resistance 10K ohm at 25C
kazu_zamasu 0:b2cea429ec0b 85 This NTC is NCP18XH103F03RB muRata
kazu_zamasu 0:b2cea429ec0b 86 */
kazu_zamasu 0:b2cea429ec0b 87 temp_cal = THAI.read() * 3.3;
kazu_zamasu 0:b2cea429ec0b 88 temp_pv =-0.7964*pow(temp_cal,6.0) - 2.5431*pow(temp_cal,5.0) +63.605*pow(temp_cal,4.0) - 274.1*pow(temp_cal,3.0) + 522.57*pow(temp_cal,2.0) - 539.26*temp_cal + 405.76;
kazu_zamasu 0:b2cea429ec0b 89
kazu_zamasu 0:b2cea429ec0b 90 /*LCD Display section */
kazu_zamasu 0:b2cea429ec0b 91 /*LCD Display section */
kazu_zamasu 0:b2cea429ec0b 92 lcd.printf(0, "SP %.1f", temp_sv_input);
kazu_zamasu 0:b2cea429ec0b 93 lcd.printf(0, "PV %.1f\n", temp_pv);
kazu_zamasu 0:b2cea429ec0b 94 lcd.printf(1, "OUT %.2f", out.read() * 100);
kazu_zamasu 0:b2cea429ec0b 95 lcd.printf(1, "PB %s\n", Run);
kazu_zamasu 0:b2cea429ec0b 96 /*Tenperature indicater */
kazu_zamasu 0:b2cea429ec0b 97 /* 1.5C high temperature */
kazu_zamasu 0:b2cea429ec0b 98 if (Run == true) {
kazu_zamasu 0:b2cea429ec0b 99 if ((temp_pv - temp_sv_input) >= 1.5) {
kazu_zamasu 0:b2cea429ec0b 100 ledR = 0;
kazu_zamasu 0:b2cea429ec0b 101 ledG = 1;
kazu_zamasu 0:b2cea429ec0b 102 ledB = 1;
kazu_zamasu 0:b2cea429ec0b 103 /* 1.5C low temperature */
kazu_zamasu 0:b2cea429ec0b 104 } else if ((temp_sv_input - temp_pv ) >= 1.5 ) {
kazu_zamasu 0:b2cea429ec0b 105 ledR = 1;
kazu_zamasu 0:b2cea429ec0b 106 ledG = 1;
kazu_zamasu 0:b2cea429ec0b 107 ledB = 0;
kazu_zamasu 0:b2cea429ec0b 108 } else {
kazu_zamasu 0:b2cea429ec0b 109 /* control green */
kazu_zamasu 0:b2cea429ec0b 110 ledR = 1;
kazu_zamasu 0:b2cea429ec0b 111 ledG = 0;
kazu_zamasu 0:b2cea429ec0b 112 ledB = 1;
kazu_zamasu 0:b2cea429ec0b 113 }
kazu_zamasu 0:b2cea429ec0b 114 } else {
kazu_zamasu 0:b2cea429ec0b 115 ledR = 1;
kazu_zamasu 0:b2cea429ec0b 116 ledG = 1;
kazu_zamasu 0:b2cea429ec0b 117 ledB = 1;
kazu_zamasu 0:b2cea429ec0b 118 }
kazu_zamasu 0:b2cea429ec0b 119 Thread::wait(rtostime * 2);
kazu_zamasu 0:b2cea429ec0b 120 }
kazu_zamasu 0:b2cea429ec0b 121 }
kazu_zamasu 0:b2cea429ec0b 122
kazu_zamasu 0:b2cea429ec0b 123
kazu_zamasu 0:b2cea429ec0b 124 int main()
kazu_zamasu 0:b2cea429ec0b 125 {
kazu_zamasu 0:b2cea429ec0b 126 RunPB.mode(PullDown);
kazu_zamasu 0:b2cea429ec0b 127 #define LCDCont 0x32 //LCD contrast set from 00 to 3f 64resolution defult set is 32step
kazu_zamasu 0:b2cea429ec0b 128 lcd.contrast(LCDCont);
kazu_zamasu 0:b2cea429ec0b 129 out.period(0.02);
kazu_zamasu 0:b2cea429ec0b 130 RunPB.rise(&runmode);
kazu_zamasu 0:b2cea429ec0b 131 Thread thread(cal_temp);
kazu_zamasu 0:b2cea429ec0b 132 rtostime = RATE * 1000;
kazu_zamasu 0:b2cea429ec0b 133 while (1) {
kazu_zamasu 0:b2cea429ec0b 134 /*PID control*/
kazu_zamasu 0:b2cea429ec0b 135 #define SV_LL 0.0 //PID setpoint % value for lo limit
kazu_zamasu 0:b2cea429ec0b 136 #define SV_HL 100.0 //PID setpoint % value for high limit
kazu_zamasu 0:b2cea429ec0b 137 TIC.setInputLimits(SV_LL, SV_HL);
kazu_zamasu 0:b2cea429ec0b 138 #define OV_LL 0.0 //PID calcurate output value 0.0 = 0%
kazu_zamasu 0:b2cea429ec0b 139 #define OV_HL 100.0 //PID calcurate output value 1.0 = 100%
kazu_zamasu 0:b2cea429ec0b 140 if (Run == true) {
kazu_zamasu 0:b2cea429ec0b 141 TIC.setOutputLimits(OV_LL, OV_HL);
kazu_zamasu 0:b2cea429ec0b 142 TIC.setSetPoint(temp_sv_input);
kazu_zamasu 0:b2cea429ec0b 143 TIC.setProcessValue(temp_pv);
kazu_zamasu 0:b2cea429ec0b 144 TIC.setBias(Bias); //control output bias
kazu_zamasu 0:b2cea429ec0b 145 TIC.setMode(1);
kazu_zamasu 0:b2cea429ec0b 146 out = TIC.compute() /100;
kazu_zamasu 0:b2cea429ec0b 147 TIC.setInterval(RATE);
kazu_zamasu 0:b2cea429ec0b 148 } else if (Run == false) {
kazu_zamasu 0:b2cea429ec0b 149 TIC.setMode(0);
kazu_zamasu 0:b2cea429ec0b 150 TIC.reset();
kazu_zamasu 0:b2cea429ec0b 151 out = 0.0;
kazu_zamasu 0:b2cea429ec0b 152 }
kazu_zamasu 0:b2cea429ec0b 153 Thread::wait(rtostime);
kazu_zamasu 0:b2cea429ec0b 154
kazu_zamasu 0:b2cea429ec0b 155 }
kazu_zamasu 0:b2cea429ec0b 156 }