Diff: flow.h

Revision:

3:3d51f8870e91

Parent:

2:ef98576cd67b

Child:

4:54dc2a95c130

--- a/flow.h	Fri Jul 12 15:58:11 2019 +0000
+++ b/flow.h	Thu Jul 25 11:17:46 2019 +0000
@@ -1,9 +1,21 @@
 #include "mbed.h"
 
+// First the inputs and pins are defined
+
 AnalogIn flowIn(PA_0);
-Serial co2(PC_10,PC_11); //USED IN MAIN
+Serial co2(PC_10,PC_11);
 //Serial ttl(A1,A0);
+AnalogIn sensor1(PC_0);
+AnalogIn sensor2(PC_1);
+AnalogIn sensor3(PC_2);
+AnalogIn sensor4(PC_3);
+AnalogIn sensor5(PA_4);
+AnalogIn sensor6(PA_5);
+AnalogIn sensor7(PA_6);
+AnalogIn sensor8(PA_7);
+AnalogIn temp(PA_1);
 
+///////////////////// FLOW LOOP /////////////////////////
 float finalflow;
 float flowVal1;
 float flowVal2;
@@ -13,8 +25,6 @@
 float bpArray[10];
 float fp;float sp;
 float FPressure;
-int value;
-//
 float flow()
 {
     while(1) 
@@ -22,7 +32,8 @@
         wait(0.01);
         flowVal1=3.3*flowIn; //Logic level 3.3
         flowVal2 = 1.5*flowVal1; //5v
-        P1 =(125*flowVal2)-62.5;
+        P1 =(125*flowVal2)-62.5; //Pressure
+        //making the value of pressure positive inside the SQRT function:
         if(flag==0)
         {
             finalflow=0;
@@ -39,13 +50,13 @@
         {
             FPressure=P1-fp;
           finalflow=(0.24*sqrt(FPressure)); //flow in litter per min
-          //ttl.printf("Flow: %f\n",finalflow);
           return finalflow;
         }
     }
 }
 
-
+///////////////////// CO2 LOOP /////////////////////////
+int value;
 float carbon()
 {
     bool allow = false;
@@ -56,6 +67,8 @@
     while(1) 
     {
         c = co2.getc();
+        //based on the user manual PDF for the CO2 sensor, the value starts with "Z"
+        //and we need to extract the right number of CO2 value
         if(c=='Z') {
             allow = true;
         }
@@ -66,9 +79,8 @@
                 count++;
             }
         
-            if(count>=6) { //NOT SURE IF 5 OR 6
+            if(count>=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;
@@ -79,3 +91,90 @@
     }
 }
 
+///////////////////// TEMPERATURE LOOP /////////////////////////
+
+float t2Cel;
+
+float 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
+        return t2Cel;
+//  printf("Temp: %f\n", t2Cel);
+    }
+}
+
+///////////////////// 8-CHANNEL SENSOR LOOP /////////////////////////
+
+float s1()
+{
+    float sen1;
+    while(1){
+            sen1=sensor1*3.3;
+            return sen1;
+            }
+}
+float s2()
+{
+    float sen2;
+    while(1){
+            sen2=sensor2*3.3;
+            return sen2;
+            }
+}
+float s3()
+{
+    float sen3;
+    while(1){
+            sen3=sensor3*3.3;
+            return sen3;
+            }
+}
+float s4()
+{
+    float sen4;
+    while(1){
+            sen4=sensor4*3.3;
+            return sen4;
+            }
+}
+float s5()
+{
+        float sen5;
+        while(1){
+                sen5=sensor5*3.3;
+                return sen5;
+                }
+}
+float s6()
+{
+        float sen6;
+        while(1){
+                sen6=sensor6*3.3;
+                return sen6;
+                }
+}
+float s7()
+{
+        float sen7;
+        while(1){
+                sen7=sensor7*3.3;
+                return sen7;
+                }
+}
+float s8()
+{
+        float sen8;
+        while(1){
+                sen8=sensor8*3.3;
+                return sen8;
+                }
+}
\ No newline at end of file