Index: firmware/App/Services/DDInterface.c
===================================================================
diff -u -r9ad496e4c3a54e96402afd66955be575bdaa3f57 -rf8bdb3ff260a42f46e178d08979758789db7c307
--- firmware/App/Services/DDInterface.c	(.../DDInterface.c)	(revision 9ad496e4c3a54e96402afd66955be575bdaa3f57)
+++ firmware/App/Services/DDInterface.c	(.../DDInterface.c)	(revision f8bdb3ff260a42f46e178d08979758789db7c307)
@@ -27,19 +27,23 @@
 #include "Timers.h"
 
 /**
- *  @addtogroup TDInterface
+ *  @addtogroup DDInterface
  *  @{
  */
 
 // ********** private definitions **********
 
 // ********** private data **********
+
 static DD_OP_MODE_T ddCurrentOpMode;                                                 ///< Current DD operation mode.
 static U32 ddSubMode;                                                                ///< Current state (sub-mode) of current DD operation mode.
 static F32 ddPermeateFlowRate;                                                       ///< DD RO Permeate flow rate.
 
 // ********** private function prototypes **********
 
+static void setDDOpMode( U32 opMode, U32 subMode );
+static void setDDPermeateFlowRate( F32 flowRate );
+
 /*********************************************************************//**
  * @brief
  * The initDDInterface function initializes the DD Interface unit.