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Dependencies:   mbed

main.cpp@1:af991edb6dc1, 2019-07-04 (annotated)

Committer:
christodoulos
Date:
Thu Jul 04 09:09:54 2019 +0000
Revision:
1:af991edb6dc1
Parent:
0:958e045ea7d1 
Handheld with solenoid

Who changed what in which revision?

UserRevisionLine numberNew contents of line
christodoulos 0:958e045ea7d1 1 #include "mbed.h"
christodoulos 0:958e045ea7d1 2 #include "co2.h"
christodoulos 0:958e045ea7d1 3
christodoulos 1:af991edb6dc1 4 AnalogIn flowIn(A3);
christodoulos 0:958e045ea7d1 5 AnalogIn temp(A2);
christodoulos 0:958e045ea7d1 6 Timer t;
christodoulos 0:958e045ea7d1 7 Thread co2Thread;
christodoulos 0:958e045ea7d1 8 Thread flowThread;
christodoulos 0:958e045ea7d1 9 Thread tempThread;
christodoulos 0:958e045ea7d1 10
christodoulos 0:958e045ea7d1 11 float flowVal;
christodoulos 0:958e045ea7d1 12
christodoulos 0:958e045ea7d1 13 void flow(){
christodoulos 0:958e045ea7d1 14 while(1){
christodoulos 0:958e045ea7d1 15 flowVal=3.3*flowIn; //Logic level 3.3
christodoulos 0:958e045ea7d1 16 // printf("Flow: %f", flowVal);
christodoulos 0:958e045ea7d1 17 }
christodoulos 0:958e045ea7d1 18 }
christodoulos 0:958e045ea7d1 19
christodoulos 0:958e045ea7d1 20 float t2Cel;
christodoulos 0:958e045ea7d1 21
christodoulos 0:958e045ea7d1 22 void getTemp(){
christodoulos 0:958e045ea7d1 23 while(1){
christodoulos 0:958e045ea7d1 24 float B = 3478; //Define thermistor constant
christodoulos 0:958e045ea7d1 25 float rRef=10e3; // Define reference resistance
christodoulos 0:958e045ea7d1 26 float r1=10e3; // Define thermistor resistance at 25 C
christodoulos 0:958e045ea7d1 27 float t1=25+273; // Define thermistor initial temperature s 25C in Kelvin
christodoulos 0:958e045ea7d1 28 float x = temp.read(); //Measure input voltage at pin A0 in bits
christodoulos 0:958e045ea7d1 29 float v = 3.3*x; //Convert bits into voltage
christodoulos 0:958e045ea7d1 30 float r2 = (3.3*rRef/v)-rRef; //Convert voltage into thermistor resistance
christodoulos 0:958e045ea7d1 31 float t2 = (B*t1)/(B-t1*log(r1/r2)); //Convert thermistor resistance into temperature in Kelvin (log means natural logarithm ln)
christodoulos 0:958e045ea7d1 32 t2Cel = t2-273; //Convert temperature from Kelvin to Celcius
christodoulos 0:958e045ea7d1 33 // printf("Temp: %f\n", t2Cel);
christodoulos 0:958e045ea7d1 34 }
christodoulos 0:958e045ea7d1 35 }
christodoulos 0:958e045ea7d1 36
christodoulos 0:958e045ea7d1 37
christodoulos 0:958e045ea7d1 38
christodoulos 0:958e045ea7d1 39 int main()
christodoulos 0:958e045ea7d1 40 {
christodoulos 0:958e045ea7d1 41
christodoulos 0:958e045ea7d1 42 int myArray[9];
christodoulos 0:958e045ea7d1 43 long double var=0.0;
christodoulos 0:958e045ea7d1 44 float sigma=0.0;
christodoulos 0:958e045ea7d1 45 unsigned int sum=0;
christodoulos 0:958e045ea7d1 46 int difSum=0;
christodoulos 0:958e045ea7d1 47 int avg=0;
christodoulos 0:958e045ea7d1 48 unsigned long long sqSum=0;
christodoulos 0:958e045ea7d1 49 bool flag=false;
christodoulos 0:958e045ea7d1 50
christodoulos 0:958e045ea7d1 51 flowThread.start(flow);
christodoulos 0:958e045ea7d1 52 tempThread.start(getTemp);
christodoulos 0:958e045ea7d1 53 carbon();
christodoulos 0:958e045ea7d1 54 t.start();
christodoulos 0:958e045ea7d1 55
christodoulos 1:af991edb6dc1 56 // while(1){
christodoulos 1:af991edb6dc1 57 // printf("CO2: %d, Flow: %f, Temp: %f\n", carbon(), flowVal, t2Cel); //COOL TERM
christodoulos 1:af991edb6dc1 58 //// printf("$d %f %f;", carbon(), flowVal, t2Cel); //Serial plotter
christodoulos 1:af991edb6dc1 59 // }
christodoulos 1:af991edb6dc1 60
christodoulos 1:af991edb6dc1 61 //SOLENOID PART//
christodoulos 1:af991edb6dc1 62 while(1){
christodoulos 1:af991edb6dc1 63 int array[9]={0,0,0,0,0,0,0,0,0};
christodoulos 1:af991edb6dc1 64 for(int i=0;i<=8;i++){
christodoulos 1:af991edb6dc1 65 array[i]=carbon();
christodoulos 1:af991edb6dc1 66 }
christodoulos 1:af991edb6dc1 67 //printf("%d %d %d %d %d %d %d %d %d\n", array[0], array[1], array[2], array[3], array[4], array[5], array[6], array[7], array[8]);
christodoulos 1:af991edb6dc1 68
christodoulos 1:af991edb6dc1 69 }
christodoulos 1:af991edb6dc1 70
christodoulos 1:af991edb6dc1 71 for(int i=0;i<9;i++){ //Get first 9 carbon values
christodoulos 1:af991edb6dc1 72 myArray[i]=carbon();
christodoulos 1:af991edb6dc1 73 printf("%d ", myArray[i]);
christodoulos 1:af991edb6dc1 74 }
christodoulos 1:af991edb6dc1 75
christodoulos 1:af991edb6dc1 76 printf("\n");
christodoulos 1:af991edb6dc1 77
christodoulos 1:af991edb6dc1 78 while(flag!=true){
christodoulos 1:af991edb6dc1 79 for(int i=0;i<9;i++){
christodoulos 1:af991edb6dc1 80 sum+=myArray[i]; //Find sum
christodoulos 0:958e045ea7d1 81 }
christodoulos 0:958e045ea7d1 82
christodoulos 1:af991edb6dc1 83 avg=sum/9;//find average
christodoulos 0:958e045ea7d1 84
christodoulos 1:af991edb6dc1 85 printf("Avg: %d\n", avg);
christodoulos 1:af991edb6dc1 86
christodoulos 1:af991edb6dc1 87 for(int i=0;i<9;i++){
christodoulos 1:af991edb6dc1 88 difSum+=(myArray[i]-avg)*(myArray[i]-avg); //Find sum of difference between value X and mean
christodoulos 1:af991edb6dc1 89 }
christodoulos 1:af991edb6dc1 90
christodoulos 1:af991edb6dc1 91 var=difSum/9;
christodoulos 1:af991edb6dc1 92 sigma=sqrt(var);
christodoulos 1:af991edb6dc1 93
christodoulos 1:af991edb6dc1 94 printf("Standard dev: %f\n", sigma);
christodoulos 1:af991edb6dc1 95
christodoulos 1:af991edb6dc1 96 if(sigma>=0.5){ //Check against carbon plateau, if sd greater than plateau startPoint
christodoulos 1:af991edb6dc1 97 for(int x=0;x<8;x++){
christodoulos 1:af991edb6dc1 98 myArray[x]=myArray[x+1]; //Shift all carbon to left by 1
christodoulos 1:af991edb6dc1 99 printf("%d ", myArray[x]);
christodoulos 1:af991edb6dc1 100 }
christodoulos 1:af991edb6dc1 101
christodoulos 1:af991edb6dc1 102 myArray[8]=carbon(); // get new carbon value in last array slot
christodoulos 1:af991edb6dc1 103 printf("%d\n", myArray[8]);
christodoulos 1:af991edb6dc1 104
christodoulos 1:af991edb6dc1 105 sum=0; //Reset variables
christodoulos 1:af991edb6dc1 106 sqSum=0;
christodoulos 1:af991edb6dc1 107 var=0;
christodoulos 1:af991edb6dc1 108 sigma=0;
christodoulos 1:af991edb6dc1 109 avg=0;
christodoulos 1:af991edb6dc1 110 difSum=0;
christodoulos 1:af991edb6dc1 111
christodoulos 1:af991edb6dc1 112 }else{
christodoulos 1:af991edb6dc1 113 printf("TURN ON SOLENOID\n"); //Turn on second sensor
christodoulos 1:af991edb6dc1 114 flag=true; //Terminate loop because sd is at plateau startPoint
christodoulos 1:af991edb6dc1 115 }
christodoulos 1:af991edb6dc1 116 }
christodoulos 0:958e045ea7d1 117
christodoulos 0:958e045ea7d1 118 }