Index: firmware/App/Modes/ModeStandby.c
===================================================================
diff -u -r499e5de29e706d09f79ba22511068990c4044e84 -rf267c42c91fd6e22db80e19039b8993582de51e9
--- firmware/App/Modes/ModeStandby.c	(.../ModeStandby.c)	(revision 499e5de29e706d09f79ba22511068990c4044e84)
+++ firmware/App/Modes/ModeStandby.c	(.../ModeStandby.c)	(revision f267c42c91fd6e22db80e19039b8993582de51e9)
@@ -18,10 +18,23 @@
 #include "ModeStandby.h"
 #include "CPLD.h"
 
+// ********** private definitions **********
+
+typedef enum Standby_Mode_States
+{
+    STANDBY_MODE_STATE_START = 0,
+    STANDBY_MODE_STATE_IDLE,
+    NUM_OF_STANDBY_MODE_STATES
+} STANDBY_MODE_STATE_T;
+
 // ********** private data **********
 
+static STANDBY_MODE_STATE_T standbyState = STANDBY_MODE_STATE_START;
+
 // ********** private function prototypes **********
 
+STANDBY_MODE_STATE_T handleStandbyIdleState( void );
+
 /*************************************************************************
  * @brief initStandbyMode
  * The initStandbyMode function initializes the Standby Mode module.
@@ -46,6 +59,8 @@
  *************************************************************************/
 void transitionToStandbyMode( void )
 {
+    // reset to start state each time we transition to standby mode
+    standbyState = STANDBY_MODE_STATE_START;
 }
 
 /*************************************************************************
@@ -59,6 +74,43 @@
  *************************************************************************/
 void execStandbyMode( void )
 {
+    // execute current Standby state
+    switch ( standbyState )
+    {
+        case STANDBY_MODE_STATE_START:
+            standbyState = STANDBY_MODE_STATE_IDLE;
+            break;
 
+        case STANDBY_MODE_STATE_IDLE:
+            standbyState = handleStandbyIdleState();
+            break;
+
+        default:
+            SET_ALARM_WITH_2_U32_DATA( ALARM_ID_SOFTWARE_FAULT, 0, standbyState )
+            standbyState = STANDBY_MODE_STATE_START;
+            break;
+    }
 }
 
+/*************************************************************************
+ * @brief
+ * The handleStandbyIdleState function executes the Idle state of the \n
+ * Standby Mode state machine.
+ * @details
+ * Inputs : none
+ * Outputs :
+ * @param none
+ * @return the next state
+ *************************************************************************/
+STANDBY_MODE_STATE_T handleStandbyIdleState( void )
+{
+    STANDBY_MODE_STATE_T result = STANDBY_MODE_STATE_IDLE;
+
+    // go to standby or standby solo mode depending on whether HD is connected
+//    if ( FALSE == isHDCommunicating() )
+//    {
+//        requestNewOperationMode( MODE_SOLO );
+//    }
+
+    return result;
+}