Diff: main.cpp

Revision:

0:b1b7cdf4b288

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Mar 31 04:10:27 2017 +0000
@@ -0,0 +1,144 @@
+#include "mbed.h"
+
+#define THERMISTORNOMINAL 100
+#define TEMPERATURENOMINAL 25
+#define NUMSAMPLES 10
+#define BCOEFFICIENT 3960
+#define SERIESRESISTOR 10000
+
+Serial pc(USBTX, USBRX);
+
+DigitalOut control1(D3);
+DigitalOut control2(D4);
+DigitalOut control3(D5);
+DigitalOut control4(D6); 
+DigitalOut control5(D7);
+AnalogIn thermistor(A0);
+
+
+int samples[NUMSAMPLES];
+
+double sensorReadings[32];
+
+
+void procesamientoDatos(int count){
+uint8_t i;
+float average;
+for (; count < 8; count++){
+    for(i = 0; i < NUMSAMPLES; i++){
+        samples[i] = thermistor.read();
+        wait(0.1);
+        }   
+     // average all the samples out
+    average = 0;
+    for (i=0; i< NUMSAMPLES; i++) {
+       average += samples[i];
+    }
+    average /= NUMSAMPLES;
+   
+    pc.printf("Average analog reading = %f\r\n", average); 
+   
+    // convert the value to resistance
+    average = 1023 / average - 1;
+    average = SERIESRESISTOR / average;
+    pc.printf("Thermistor resistance = %f\r\n", average); 
+   
+    float steinhart;
+    steinhart = average / THERMISTORNOMINAL;     // (R/Ro)
+    steinhart = log(steinhart);                  // ln(R/Ro)
+    steinhart /= BCOEFFICIENT;                   // 1/B * ln(R/Ro)
+    steinhart += 1.0 / (TEMPERATURENOMINAL + 273.15); // + (1/To)
+    steinhart = 1.0 / steinhart;                 // Invert
+    steinhart -= 273.15;                         // convert to C
+   
+    pc.printf("Temperature = %f\r\n", steinhart);
+
+    sensorReadings[count] = steinhart;
+    wait(0.1);
+  }
+
+  for (count=0; count<8; count++) {
+    pc.printf("Sensor #%f\r", count); 
+    pc.printf(": %f\r\n", sensorReadings[count]);
+  }
+  wait(0.1);
+
+}  
+
+
+
+
+int main()
+{
+    for(int iX = 0; iX < 8; iX++){
+        switch(iX){
+            
+            case 0:
+                control1 = 0;
+                control2 = 0;
+                control3 = 0;
+                control4 = 0;
+                control5 = 0;
+                procesamientoDatos(iX);
+            break; 
+            case 1:
+                control1 = 1;
+                control2 = 0;
+                control3 = 0;
+                control4 = 0;
+                control5 = 0;   
+                procesamientoDatos(iX);
+            break;
+            case 2:
+                control1 = 0;
+                control2 = 1;
+                control3 = 0;
+                control4 = 0;
+                control5 = 0;
+                procesamientoDatos(iX);
+            break;
+            case 3:
+                control1 = 1;
+                control2 = 1;
+                control3 = 0;
+                control4 = 0;
+                control5 = 0;
+                procesamientoDatos(iX);
+            break;
+            case 4:
+                control1 = 0;
+                control2 = 0;
+                control3 = 1;
+                control4 = 0;
+                control5 = 0;
+                procesamientoDatos(iX);
+            break;
+            case 5:
+                control1 = 1;
+                control2 = 0;
+                control3 = 1;
+                control4 = 0;
+                control5 = 0;
+                procesamientoDatos(iX);
+            break;
+            case 6:
+                control1 = 0;
+                control2 = 1;
+                control3 = 1;
+                control4 = 0;
+                control5 = 0;
+                procesamientoDatos(iX);
+            break;
+            case 7:
+                control1 = 1;
+                control2 = 1;
+                control3 = 1;
+                control4 = 0;
+                control5 = 0;
+                procesamientoDatos(iX);
+            break;
+            
+            }
+        }
+
+}
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