Diff: main.cpp

Revision:

0:958e045ea7d1

Child:

1:af991edb6dc1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Mar 22 10:31:21 2019 +0000
@@ -0,0 +1,118 @@
+#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
+//    }
+//  } 
+  
+}