File content as of revision 0:958e045ea7d1:

#include "mbed.h"
#include "co2.h"

AnalogIn flowIn(A0);
AnalogIn temp(A2);
Timer t;
Thread co2Thread;
Thread flowThread;
Thread tempThread;

float flowVal;

void flow(){
    while(1){
          flowVal=3.3*flowIn; //Logic level 3.3
//        printf("Flow: %f", flowVal);
    }
}

 float t2Cel;
 
void getTemp(){
  while(1){
  float B = 3478; //Define thermistor constant
  float rRef=10e3; // Define reference resistance
  float r1=10e3; // Define thermistor resistance at 25 C
  float t1=25+273; // Define thermistor initial temperature s 25C in Kelvin
  float x = temp.read(); //Measure input voltage at pin A0 in bits
  float v = 3.3*x; //Convert bits into voltage
  float r2 = (3.3*rRef/v)-rRef; //Convert voltage into thermistor resistance
  float t2 = (B*t1)/(B-t1*log(r1/r2)); //Convert thermistor resistance into temperature in Kelvin (log means natural logarithm ln)
  t2Cel = t2-273; //Convert temperature from Kelvin to Celcius
//  printf("Temp: %f\n", t2Cel);
}
}



int main()
{      

    int myArray[9];
    long double var=0.0;
    float sigma=0.0;
    unsigned int sum=0;
    int difSum=0;
    int avg=0;
    unsigned long long sqSum=0;
    bool flag=false;
    
    flowThread.start(flow);
    tempThread.start(getTemp);
    carbon();
    t.start();
    
    while(1){
    printf("CO2: %d, Flow: %f, Temp: %f\n", carbon(), flowVal, t2Cel);  //COOL TERM
//    printf("$d %f %f;", carbon(), flowVal, t2Cel); //Serial plotter
    }
    
    
//    while(1){
//        int array[9]={0,0,0,0,0,0,0,0,0};
//        for(int i=0;i<=8;i++){
//            array[i]=carbon();
//        }
//        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]);
//
//    }
//
//  for(int i=0;i<9;i++){  //Get first 9 carbon values
//      myArray[i]=carbon();
//      printf("%d ", myArray[i]);
//  }
//  
//   printf("\n");
//   
//  while(flag!=true){
//    for(int i=0;i<9;i++){ 
//      sum+=myArray[i]; //Find sum
//    }
//    
//    avg=sum/9;//find average
//    
//    printf("Avg: %d\n", avg);
//    
//    for(int i=0;i<9;i++){ 
//      difSum+=(myArray[i]-avg)*(myArray[i]-avg); //Find sum of difference between value X and mean
//    }
//        
//    var=difSum/9;
//    sigma=sqrt(var);
//    
//    printf("Standard dev: %f\n", sigma);
//    
//    if(sigma>=0.5){ //Check against carbon plateau, if sd greater than plateau startPoint
//        for(int x=0;x<8;x++){
//          myArray[x]=myArray[x+1];  //Shift all carbon to left by 1
//          printf("%d ", myArray[x]);
//        }
//        
//        myArray[8]=carbon(); // get new carbon value in last array slot
//        printf("%d\n", myArray[8]);
//
//        sum=0;  //Reset variables
//        sqSum=0;
//        var=0;
//        sigma=0;
//        avg=0;
//        difSum=0;
//        
//    }else{
//      printf("TURN ON SOLENOID\n"); //Turn on second sensor
//      flag=true; //Terminate loop because sd is at plateau startPoint
//    }
//  } 
  
}