Added interfaces iEC,iEmg,iClock,iHeartRate,iLineFinder

Signed-off-by: Stefan Andritoiu <stefan.andritoiu@gmail.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

src/dfrec/dfrec.hpp

@@ -31,6 +31,7 @@
 #include <string.h>
 
 #include "dfrec.h"
+#include <interfaces/iEC.hpp>
 
 namespace upm {
   /**
@@ -65,7 +66,7 @@ namespace upm {
    * @snippet dfrec.cxx Interesting
    */
 
-  class DFREC {
+  class DFREC : virtual public iEC {
   public:
 
     /**
@@ -120,6 +121,13 @@ namespace upm {
      */
     float getEC();
 
+    /**
+     * Get computed EC (ms/cm) value from the sensor. update() is called
+     * in this function.
+     * @return EC value in ms/cm.
+     */
+    virtual float getECValue();
+
     /**
      * Get the measured volts from the sensor. update() must have been
      * called prior to calling this function.