Diff: GasArray.cpp

Revision:

0:bd3708b85a8b

Child:

1:fec4764e82cb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/GasArray.cpp	Thu Jun 16 21:59:31 2016 +0000
@@ -0,0 +1,76 @@
+#include "GasArray.h"
+#include <string>
+#include <cmath>
+
+GasArray::GasArray(int n, float bR[], float mV, float dR[], AnalogIn p[], float is[], string t[], string g[])
+{
+    //load array information
+    number = n;
+    baseR = bR;
+    pwrV = mV;
+    dividerR = dR;
+    pins = p;
+    InverseSensitivity = is;
+    types = t;
+    gases = g;
+    
+    //initialize other members
+    responseV = new float [n];
+    sensorR = new float [n];
+    percentages = new float [n];
+}
+
+void GasArray::read()               // Reads and saves sensor responses
+{
+    //read responses, get percentages
+    for(int i = 0; i < number; i++)
+    {
+        //get divided voltage
+        responseV[i] = pwrV*(pins[i].read());
+        //get sensor responses
+        sensorR[i] = ((responseV[i]*dividerR[i])/(pwrV-responseV[i])-baseR[i])/baseR[i];
+    }
+    //get percentages
+    for(int i=0; i<number; i++)
+    {
+        float sum = 0;
+        for(int j=0; j<number; j++)
+        {
+            sum += InverseSensitivity[i*number+j]*sensorR[j];
+        }
+        percentages[i] = sum;
+    }
+}
+
+void GasArray::display_init(uLCD_4DGL *uLCD) // Displays sensor types
+{
+    uLCD -> cls();
+    //print sensor types
+    for(int i=0; i<number; i++)
+    {
+        uLCD -> locate(1, 2*i+1);
+        uLCD -> printf("%s", types[i]);
+    }
+    //print gas names
+    for(int i=0; i<number; i++)
+    {
+        uLCD -> locate(1, 2*i+1+3*number);
+        uLCD -> printf("%s", gases[i]);
+    }
+}
+
+void GasArray::display_cont(uLCD_4DGL *uLCD)
+{
+    //print sensor responses
+    for(int i=0; i<number; i++)
+    {
+        uLCD -> locate(10,2*i+1);
+        uLCD -> printf("%2.03f", sensorR[i]);
+    }
+    //print gas percentages
+    for(int i=0; i<number; i++)
+    {
+        uLCD -> locate(10,2*i+1+3*number);
+        uLCD -> printf("%2.03f", percentages[i]);
+    }
+}
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