ELEC3850ProjectSynchronousMachine01 / Mbed 2 deprecated ProjectCode01

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Dependencies:   TextLCD mbed PID

main.cpp@3:a1b11dfd26f3, 2018-10-07 (annotated)

Committer:
nicovv44
Date:
Sun Oct 07 01:19:29 2018 +0000
Revision:
3:a1b11dfd26f3
Parent:
2:e612706e18eb
Child:
4:886ce7eefa6e
Display VRMS and Freq on LCD as requested by Brinn.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nicovv44 0:1f66eaf1013d 1 // Hello World! for the TextLCD
nicovv44 0:1f66eaf1013d 2
nicovv44 0:1f66eaf1013d 3 #include "mbed.h"
nicovv44 0:1f66eaf1013d 4 #include "TextLCD.h"
nicovv44 0:1f66eaf1013d 5
nicovv44 0:1f66eaf1013d 6 TextLCD lcd(D2, D3, D4, D5, D6, D7); // rs, e, d4-d7
nicovv44 0:1f66eaf1013d 7 Serial pc(USBTX, USBRX); // tx, rx
nicovv44 1:f31a46c62d10 8 //PwmOut pwm1(D9);
nicovv44 1:f31a46c62d10 9 DigitalOut relaySync(D8);
nicovv44 0:1f66eaf1013d 10
nicovv44 3:a1b11dfd26f3 11 AnalogIn syncPin(A0);
nicovv44 3:a1b11dfd26f3 12 AnalogIn gridPin(A1);
nicovv44 3:a1b11dfd26f3 13 AnalogIn differentialPin(A2);
nicovv44 0:1f66eaf1013d 14
nicovv44 0:1f66eaf1013d 15 const float sqrt2 = 1.414213562;
nicovv44 0:1f66eaf1013d 16
nicovv44 0:1f66eaf1013d 17 Timeout timeout;
nicovv44 0:1f66eaf1013d 18 volatile bool looping = false;
nicovv44 0:1f66eaf1013d 19
nicovv44 0:1f66eaf1013d 20
nicovv44 0:1f66eaf1013d 21
nicovv44 0:1f66eaf1013d 22
nicovv44 0:1f66eaf1013d 23
nicovv44 0:1f66eaf1013d 24
nicovv44 0:1f66eaf1013d 25 // ##############################################
nicovv44 0:1f66eaf1013d 26 // ########## PROTOTYPES ########################
nicovv44 0:1f66eaf1013d 27 // #############################################################################
nicovv44 0:1f66eaf1013d 28 void stopLooping(void);
nicovv44 0:1f66eaf1013d 29 float getVolageRMS(AnalogIn ana_pin);
nicovv44 0:1f66eaf1013d 30 float getVolageReadedMax(AnalogIn ana_pin);
nicovv44 0:1f66eaf1013d 31 float getFrequency(AnalogIn ana_pin);
nicovv44 0:1f66eaf1013d 32
nicovv44 0:1f66eaf1013d 33
nicovv44 0:1f66eaf1013d 34
nicovv44 0:1f66eaf1013d 35
nicovv44 0:1f66eaf1013d 36
nicovv44 0:1f66eaf1013d 37
nicovv44 0:1f66eaf1013d 38
nicovv44 0:1f66eaf1013d 39
nicovv44 0:1f66eaf1013d 40
nicovv44 0:1f66eaf1013d 41
nicovv44 0:1f66eaf1013d 42
nicovv44 0:1f66eaf1013d 43
nicovv44 0:1f66eaf1013d 44
nicovv44 0:1f66eaf1013d 45 // ##############################################
nicovv44 0:1f66eaf1013d 46 // ########## MAIN ##############################
nicovv44 0:1f66eaf1013d 47 // #############################################################################
nicovv44 0:1f66eaf1013d 48 int main() {
nicovv44 3:a1b11dfd26f3 49 float syncRMS, gridRMS, syncFreq, gridFreq;
nicovv44 0:1f66eaf1013d 50
nicovv44 1:f31a46c62d10 51 relaySync = 1;//Relay off=1, on=0
nicovv44 1:f31a46c62d10 52 while(1){
nicovv44 3:a1b11dfd26f3 53 /*if(getVolageReadedMax(analog_pin1) < 0.020){
nicovv44 1:f31a46c62d10 54 relaySync = 0;//Relay off=1, on=0
nicovv44 1:f31a46c62d10 55 lcd.locate(0,0);
nicovv44 1:f31a46c62d10 56 lcd.printf("SYNC");
nicovv44 3:a1b11dfd26f3 57 }*/
nicovv44 3:a1b11dfd26f3 58 syncRMS = getVolageRMS(syncPin);
nicovv44 3:a1b11dfd26f3 59 gridRMS = getVolageRMS(gridPin);
nicovv44 3:a1b11dfd26f3 60 syncFreq = getFrequency(syncPin);
nicovv44 3:a1b11dfd26f3 61 gridFreq = getFrequency(gridPin);
nicovv44 3:a1b11dfd26f3 62
nicovv44 3:a1b11dfd26f3 63 lcd.locate(0,0);//(col,row)
nicovv44 3:a1b11dfd26f3 64 lcd.printf(" ");
nicovv44 3:a1b11dfd26f3 65 lcd.locate(0,1);//(col,row)
nicovv44 3:a1b11dfd26f3 66 lcd.printf(" ");
nicovv44 3:a1b11dfd26f3 67 lcd.locate(0,0);//(col,row)
nicovv44 3:a1b11dfd26f3 68 lcd.printf("G:%3.1f@%3.1f", gridRMS, gridFreq);
nicovv44 3:a1b11dfd26f3 69 lcd.locate(0,1);//(col,row)
nicovv44 3:a1b11dfd26f3 70 lcd.printf("S:%3.1f@%3.1f", syncRMS, syncFreq);
nicovv44 1:f31a46c62d10 71 }
nicovv44 1:f31a46c62d10 72
nicovv44 1:f31a46c62d10 73
nicovv44 1:f31a46c62d10 74 // specify period first
nicovv44 1:f31a46c62d10 75 //pwm1.period(0.1f); // 4 second period
nicovv44 1:f31a46c62d10 76 //pwm1.write(0.50f); // 50% duty cycle, relative to period
nicovv44 3:a1b11dfd26f3 77
nicovv44 0:1f66eaf1013d 78 }
nicovv44 0:1f66eaf1013d 79
nicovv44 0:1f66eaf1013d 80
nicovv44 0:1f66eaf1013d 81
nicovv44 0:1f66eaf1013d 82
nicovv44 0:1f66eaf1013d 83
nicovv44 0:1f66eaf1013d 84
nicovv44 0:1f66eaf1013d 85
nicovv44 0:1f66eaf1013d 86 // ##############################################
nicovv44 0:1f66eaf1013d 87 // ########## FUNCTIONS #########################
nicovv44 0:1f66eaf1013d 88 // #############################################################################
nicovv44 0:1f66eaf1013d 89 // ISR to stop loping
nicovv44 0:1f66eaf1013d 90 void stopLooping(void) {
nicovv44 0:1f66eaf1013d 91 looping = false;//looping is volatile bool
nicovv44 0:1f66eaf1013d 92 }
nicovv44 0:1f66eaf1013d 93
nicovv44 0:1f66eaf1013d 94 // #############################################################################
nicovv44 0:1f66eaf1013d 95 float getVolageRMS(AnalogIn ana_pin){
nicovv44 0:1f66eaf1013d 96 float v1;//readed voltage
nicovv44 0:1f66eaf1013d 97 float v1Max = 0;//max readed voltage
nicovv44 0:1f66eaf1013d 98 float VRMS; //RMS voltage
nicovv44 0:1f66eaf1013d 99 looping = true;
nicovv44 1:f31a46c62d10 100 timeout.attach(callback(&stopLooping), 0.020);//T=20ms because f=50Hz
nicovv44 0:1f66eaf1013d 101 while(looping){
nicovv44 0:1f66eaf1013d 102 v1 = ana_pin.read()*3.3;
nicovv44 0:1f66eaf1013d 103 if(v1 > v1Max){
nicovv44 0:1f66eaf1013d 104 v1Max = v1;
nicovv44 0:1f66eaf1013d 105 }
nicovv44 0:1f66eaf1013d 106 }
nicovv44 3:a1b11dfd26f3 107 VRMS = (v1Max+0.685)*9.32/sqrt2;
nicovv44 1:f31a46c62d10 108 pc.printf("VRMS: %f\r\n",VRMS);
nicovv44 0:1f66eaf1013d 109 return VRMS;
nicovv44 0:1f66eaf1013d 110 }
nicovv44 0:1f66eaf1013d 111
nicovv44 0:1f66eaf1013d 112
nicovv44 0:1f66eaf1013d 113 // #############################################################################
nicovv44 0:1f66eaf1013d 114 float getVolageReadedMax(AnalogIn ana_pin){
nicovv44 0:1f66eaf1013d 115 float v1;//readed voltage
nicovv44 0:1f66eaf1013d 116 float v1Max = 0;//max readed voltage
nicovv44 0:1f66eaf1013d 117 looping = true;
nicovv44 1:f31a46c62d10 118 timeout.attach(callback(&stopLooping), 0.025);//T=25>20ms because f=50Hz
nicovv44 0:1f66eaf1013d 119 while(looping){
nicovv44 0:1f66eaf1013d 120 v1 = ana_pin.read()*3.3;
nicovv44 0:1f66eaf1013d 121 if(v1 > v1Max){
nicovv44 0:1f66eaf1013d 122 v1Max = v1;
nicovv44 0:1f66eaf1013d 123 }
nicovv44 0:1f66eaf1013d 124 }
nicovv44 0:1f66eaf1013d 125 return v1Max;
nicovv44 0:1f66eaf1013d 126 }
nicovv44 0:1f66eaf1013d 127
nicovv44 1:f31a46c62d10 128
nicovv44 0:1f66eaf1013d 129 // #############################################################################
nicovv44 0:1f66eaf1013d 130 float getFrequency(AnalogIn ana_pin){
nicovv44 0:1f66eaf1013d 131 float freq; //frequency
nicovv44 0:1f66eaf1013d 132 float maxReadedVoltage;//maximum voltage readed by the ADC
nicovv44 0:1f66eaf1013d 133 float readedVoltage;//readed voltage
nicovv44 0:1f66eaf1013d 134 int nbrRisingEdge=0;// number of rising edge detected
nicovv44 0:1f66eaf1013d 135 float T;//Periode
nicovv44 0:1f66eaf1013d 136 Timer timer;
nicovv44 0:1f66eaf1013d 137 maxReadedVoltage = getVolageReadedMax(ana_pin);
nicovv44 1:f31a46c62d10 138 pc.printf("maxReadedVoltage: %f\r\n",maxReadedVoltage);
nicovv44 0:1f66eaf1013d 139 bool aboveLine = true;
nicovv44 1:f31a46c62d10 140 looping = true;
nicovv44 1:f31a46c62d10 141 timeout.attach(callback(&stopLooping), 1);//try to find rising edges during 1sec max
nicovv44 1:f31a46c62d10 142 while(nbrRisingEdge<2 and looping){
nicovv44 0:1f66eaf1013d 143 readedVoltage = ana_pin.read()*3.3;
nicovv44 0:1f66eaf1013d 144 if(readedVoltage<(maxReadedVoltage/2)){//rising edge detection ready
nicovv44 0:1f66eaf1013d 145 aboveLine = false;
nicovv44 0:1f66eaf1013d 146 }
nicovv44 0:1f66eaf1013d 147 if((maxReadedVoltage/2)<readedVoltage && aboveLine==false){//rising edge detected
nicovv44 0:1f66eaf1013d 148 aboveLine = true;
nicovv44 0:1f66eaf1013d 149 if(nbrRisingEdge==0)
nicovv44 0:1f66eaf1013d 150 timer.start();
nicovv44 0:1f66eaf1013d 151 if(nbrRisingEdge==1)
nicovv44 0:1f66eaf1013d 152 timer.stop();
nicovv44 0:1f66eaf1013d 153 nbrRisingEdge++;
nicovv44 0:1f66eaf1013d 154 }
nicovv44 0:1f66eaf1013d 155 }
nicovv44 1:f31a46c62d10 156 if(nbrRisingEdge!=2){
nicovv44 1:f31a46c62d10 157 lcd.locate(13,1);
nicovv44 1:f31a46c62d10 158 lcd.printf("f!%d",nbrRisingEdge);
nicovv44 1:f31a46c62d10 159 }
nicovv44 0:1f66eaf1013d 160 T = timer.read();
nicovv44 0:1f66eaf1013d 161 freq = 1/T;
nicovv44 1:f31a46c62d10 162 pc.printf("T: %f\r\n",T);
nicovv44 1:f31a46c62d10 163 pc.printf("freq: %f\r\n\n",freq);
nicovv44 0:1f66eaf1013d 164 return freq;
nicovv44 1:f31a46c62d10 165 }