Index: firmware/App/Modes/ModeGenDialysate.c
===================================================================
diff -u -rb2e7c9194acd84783d2bbad64c5720410493e199 -r5db64c182f58f16d6b4b9a5131a2913b4a156ccc
--- firmware/App/Modes/ModeGenDialysate.c	(.../ModeGenDialysate.c)	(revision b2e7c9194acd84783d2bbad64c5720410493e199)
+++ firmware/App/Modes/ModeGenDialysate.c	(.../ModeGenDialysate.c)	(revision 5db64c182f58f16d6b4b9a5131a2913b4a156ccc)
@@ -1300,4 +1300,71 @@
     return result;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The testValidateDDGenDialysateChangeReq function validate whether request
+ * operation sub mode is legal or not.
+ * @details \b Inputs: none
+ * @details \b Outputs: none
+ * @param newSubMode the enumerated sub state of the mode
+ * @return TRUE if request is legal, FALSE if not
+ *************************************************************************/
+BOOL testValidateDDGenDialysateChangeReq( U32 newSubMode )
+{
+    BOOL result = FALSE;
+
+    if ( newSubMode < NUM_OF_DD_GEND_MODE_STATES )
+    {
+        switch ( newSubMode )
+        {
+            // TODO add validate condition after checking with Vinay
+            case DD_GEND_STATE_START:
+            case DD_GEND_DIALYSATE_BYPASS_STATE:
+            case DD_GEND_DIALYSATE_DELIVERY_STATE:
+            case DD_GEND_ISOLATED_UF_STATE:
+            case DD_GEND_SPENT_CHAMBER_FILL_STATE:
+            case DD_GEND_BICARB_CHAMBER_FILL_STATE:
+            case DD_GEND_DIALYSATE_DELIVERY_PAUSE:
+            default:
+                result = TRUE;
+                break;
+        }
+    }
+
+    return result;
+}
+
+/*********************************************************************//**
+ * @brief
+ * The testSignalNewDDGenDialysateSubMode function request transition
+ * to a new operation sub mode.
+ * @details \b Inputs: none
+ * @details \b Outputs: none
+ * @param newSubMode the enumerated sub state of the mode
+ * @return none
+ *************************************************************************/
+void testSignalNewDDGenDialysateSubMode( U32 newSubMode )
+{
+    if ( newSubMode < NUM_OF_DD_GEND_MODE_STATES )
+    {
+        genDialysateState = (DD_GEND_MODE_STATE_T)newSubMode;
+
+        switch ( newSubMode )
+        {
+            // TODO add logic after checking with Vinay
+            // Any of these state require no special handling
+            case DD_GEND_STATE_START:
+            case DD_GEND_DIALYSATE_BYPASS_STATE:
+            case DD_GEND_DIALYSATE_DELIVERY_STATE:
+            case DD_GEND_ISOLATED_UF_STATE:
+            case DD_GEND_SPENT_CHAMBER_FILL_STATE:
+            case DD_GEND_BICARB_CHAMBER_FILL_STATE:
+            case DD_GEND_DIALYSATE_DELIVERY_PAUSE:
+            default:
+                break;
+        }
+        setModeGenDStateTransition( genDialysateState );
+    }
+}
+
 /**@}*/