Diff: main.cpp

Revision:

0:ab91d2a9a3bd

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Mar 07 04:18:43 2014 +0000
@@ -0,0 +1,31 @@
+#include "mbed.h"
+ 
+//Print temperature from LM61 analog temperature sensor
+ 
+//set p15 to analog input to read LM61 sensor's voltage output
+AnalogIn LM61(PTB0);
+ 
+//also setting unused analog input pins to digital outputs reduces A/D noise a bit
+//see http://mbed.org/users/chris/notebook/Getting-best-ADC-performance/
+DigitalOut P16(PTB1);
+DigitalOut P17(PTB2);
+DigitalOut P18(PTB3);
+DigitalOut P19(PTC0);
+//DigitalOut P20(p20);
+ 
+int main()
+{
+    float tempC, tempF;
+    float val;
+ 
+    while(1) {
+        //conversion to degrees C - from sensor output voltage per LM61 data sheet
+        tempC = ((LM61*3.3)-0.500)*100.0;
+        val = 
+        //convert to degrees F
+        tempF = (9.0*tempC)/5.0 + 32.0;
+        //print current temp
+        printf("%5.2F C %5.2F F \n\r", tempC, tempF);
+        wait(.5);
+    }
+}
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