Diff: Grove_temp_sensor.h

Revision:

0:3fa32ef93fdc

Child:

2:772a59579086

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Grove_temp_sensor.h	Wed Mar 09 00:00:46 2016 +0000
@@ -0,0 +1,33 @@
+#include "mbed.h"
+
+//Setup a new class for Grove_temp_sensor sensor
+class Grove_temp_sensor
+{
+public:
+    Grove_temp_sensor(PinName pin);
+    Grove_temp_sensor();
+    float read();
+private:
+//class sets up the AnalogIn pin
+    AnalogIn _pin;
+};
+
+Grove_temp_sensor::Grove_temp_sensor(PinName pin) : _pin(pin)
+{
+// _pin(pin) means pass pin to the AnalogIn constructor
+}
+
+float Grove_temp_sensor::read()
+{
+
+        double a;
+        a=_pin.read()*1023;
+        double resistance=(float)(1023-a)*10000/a;
+        double temperature=1/(log(resistance/10000)/3975+1/298.15)-276.05;
+        //conver C to F;
+        temperature = (9.0*temperature)/5.0 + 32.0;
+    return temperature;
+}
+
+
+        
\ No newline at end of file