Flotsam / Temp_Library

Temperature library for the full project.

Dependents:   Full-Project

Files at this revision

API Documentation at this revision

Revision 1:fc58ae197a88, committed 2015-12-07

Comitter:
ptcrews
Date:
Mon Dec 07 00:06:03 2015 +0000
Parent:
0:a42f4353261f
Commit message:
Added comments.

Changed in this revision

Temp_Sensor.cpp Show annotated file Show diff for this revision Revisions of this file
Temp_Sensor.h Show annotated file Show diff for this revision Revisions of this file 
diff -r a42f4353261f -r fc58ae197a88 Temp_Sensor.cpp
--- a/Temp_Sensor.cpp	Sat Dec 05 07:31:46 2015 +0000
+++ b/Temp_Sensor.cpp	Mon Dec 07 00:06:03 2015 +0000
@@ -1,11 +1,13 @@
 #include "Temp_Sensor.h"
 
-//function to get both the 
-// Using the AD22100K temperature sensor
+/* Function: read
+ * ---------------
+ * Reads the temperature from the AD22100K sensor.
+ */
 float Temp_Sensor::read() {                                               
     // Convert Analog-input value to temperature
+    float voltage = (int)((temperature.read() * ADC_CONVERSION) * 1023);
     //1023 is to scale it up to the arduino read values.
-    float voltage = (int)((temperature.read() * ADC_CONVERSION) * 1023);
     float temperatureValue = (voltage * 0.217226044) - 61.1111111; // conversion factor simplified.
     printf("AI_Val: %f\n", temperatureValue);
     return temperatureValue;       // 22.5 mV / °C; Ratiometric measurement, conversion valid for 5 V!

diff -r a42f4353261f -r fc58ae197a88 Temp_Sensor.h
--- a/Temp_Sensor.h	Sat Dec 05 07:31:46 2015 +0000
+++ b/Temp_Sensor.h	Mon Dec 07 00:06:03 2015 +0000
@@ -1,10 +1,15 @@
 #include "main.h"
 
-#define ADC_CONVERSION 3.3/5.0
+#define ADC_CONVERSION 3.3/5.0  // ADC conversion ratio to get proper reading
 
 #ifndef _TEMP_SENSOR
 #define _TEMP_SENSOR
 
+/* Class: Temp_Sensor
+ * ------------------
+ * Defines the entire temp sensor interface for the AD22100K
+ * temperature sensor. Note: Only valid when connected to 5V.
+ */
 class Temp_Sensor {
     public:
         Temp_Sensor(): temperature(TMP_ANALOG){}