File content as of revision 2:ef98576cd67b:

#include "mbed.h"

AnalogIn flowIn(PA_0);
Serial co2(PC_10,PC_11); //USED IN MAIN
//Serial ttl(A1,A0);

float finalflow;
float flowVal1;
float flowVal2;
float P1;
int flag=0;
int o=0;
float bpArray[10];
float fp;float sp;
float FPressure;
int value;
//
float flow()
{
    while(1) 
    {
        wait(0.01);
        flowVal1=3.3*flowIn; //Logic level 3.3
        flowVal2 = 1.5*flowVal1; //5v
        P1 =(125*flowVal2)-62.5;
        if(flag==0)
        {
            finalflow=0;
            bpArray[o]=P1;  
            sp+=bpArray[o];
            o=o+1;
                    if (o=9)
                    {
                        fp=sp/10;
                        flag=1;
                    }            
        }
        if (flag==1)
        {
            FPressure=P1-fp;
          finalflow=(0.24*sqrt(FPressure)); //flow in litter per min
          //ttl.printf("Flow: %f\n",finalflow);
          return finalflow;
        }
    }
}


float carbon()
{
    bool allow = false;
    char c;
    char co2_measure[5];
    int count=0;

    while(1) 
    {
        c = co2.getc();
        if(c=='Z') {
            allow = true;
        }

        if(allow) {
            if(c>=48 && c<=57) {
                co2_measure[count]=c;
                count++;
            }
        
            if(count>=6) { //NOT SURE IF 5 OR 6
                value = ((co2_measure[0]-'0')*100000+co2_measure[1]-'0')*10000+(co2_measure[2]-'0')*1000+(co2_measure[3]-'0')*100; 
                //ttl.printf("CO2: %d\n",value);
                float CAR;
                CAR=(float)value/10000;
                count=0;
                allow=false;
                return CAR;
            }
        }
    }
}