Revision 0:3fa32ef93fdc, committed 2016-03-09

Comitter:

peipei123

Date:

Wed Mar 09 00:00:46 2016 +0000

Child:

1:e3c235c7edaf

Commit message:

Hello world Example

Changed in this revision

--- /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

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Mar 09 00:00:46 2016 +0000
@@ -0,0 +1,11 @@
+#include "mbed.h"
+#include "Grove_temp_sensor.h"
+AnalogIn Grove_temp_sensor(p15);
+
+int main() {
+    double temp;
+    while(1) {
+      temp = Grove_temp_sensor.read();
+      printf("The temperature is: %5.2F C \n\r", temp);
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Wed Mar 09 00:00:46 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/87f2f5183dfb
\ No newline at end of file