Diff: temperature.cpp

Revision:

0:bf61ac6be2d7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/temperature.cpp	Sat Jan 14 19:47:33 2017 +0000
@@ -0,0 +1,45 @@
+#include "mbed.h"
+#include "temperature.h"
+
+static const char CLS[] = "\x1B[2J";    // VT100 erase screen
+static const char HOME[] = "\x1B[H";    // VT100 home
+
+static const int SAMPLES = 100;         // use an average for better precision
+enum { delay = 1 };
+
+int main() 
+{
+    clear_screen();
+    pc.printf("========[ Temperature ]========");
+    
+    while (true) 
+    {
+        pc.printf(HOME);
+        float voltage = measure_voltage(SAMPLES);
+        float temperature = voltage_to_temperature(voltage, SAMPLES);
+        pc.printf("\n\rtemperature: %4.1f C", temperature);
+        wait(delay);
+    }
+}
+
+void clear_screen()
+{
+    pc.printf(CLS);      
+    pc.printf(HOME);               
+}
+
+float measure_voltage(int samples)
+{
+    float voltage = 0;
+    for (int i = 0; i < samples; ++i)
+    {
+        voltage += temperatureIn;
+    }
+    return voltage;
+}
+
+float voltage_to_temperature(int voltage, int samples)
+{
+    float temperature = (voltage / 0.01) / samples;
+    return temperature;
+}