Index: firmware/App/Modes/ModeUpdate.c
===================================================================
diff -u -rfc99f47309c9d96f73a2d4696b42d6d302f334a7 -rc74c1d99a011dd0fb7f98f183faecda675221fce
--- firmware/App/Modes/ModeUpdate.c	(.../ModeUpdate.c)	(revision fc99f47309c9d96f73a2d4696b42d6d302f334a7)
+++ firmware/App/Modes/ModeUpdate.c	(.../ModeUpdate.c)	(revision c74c1d99a011dd0fb7f98f183faecda675221fce)
@@ -1,9 +1,3 @@
-/*
- * ModeUpdate.c
- *
- *  Created on: Jul 31, 2024
- *      Author: fw
- */
 
 #include "CommBuffers.h"
 #include "Download.h"
@@ -12,17 +6,42 @@
 #include "NVDataMgmt.h"
 #include "OperationModes.h"
 
+/**
+ *  @addtogroup UpdateMode
+ *  @{
+ */
+
+// ********** private definitions **********
+
+// ********** private data **********
+
 static MODE_SW_UPDATE_STATE_T updateCurrentState;
 
+// ********** private function prototypes **********
+
 static MODE_SW_UPDATE_STATE_T handleUpdateModeUpdateState( void );
 static MODE_SW_UPDATE_STATE_T handleUpdateModeVerifyState( void );
 static MODE_SW_UPDATE_STATE_T handleUpdateModeAbortState( void );
 
+/*********************************************************************//**
+ * @brief
+ * The initUpdateMode function initializes the Update Mode Unit.
+ * @details \b Inputs: none
+ * @details \b Outputs: updateCurrentState
+ * @return none
+ *************************************************************************/
 void initUpdateMode( void )
 {
     updateCurrentState = SW_UPDATE_UPDATE_STATE;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The transitionToUpdateMode function prepares for transition to Update Mode.
+ * @details \b Inputs: none
+ * @details \b Outputs: Standby Mode unit re-initialized
+ * @return none
+ *************************************************************************/
 U32 transitionToUpdateMode( void )
 {
     initUpdateMode();
@@ -35,6 +54,13 @@
     return 0;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The execUpdateMode function executes the Update Mode state machine.
+ * @details \b Inputs: updateCurrentState
+ * @details \b Outputs: updateCurrentState
+ * @return current state (sub-mode)
+ *************************************************************************/
 U32 execUpdateMode( void )
 {
     switch( updateCurrentState )
@@ -59,7 +85,14 @@
     return 0;
 }
 
-
+/*********************************************************************//**
+ * @brief
+ * The handleUpdateModeUpdateState function handles the update mode update state.
+ * This state checks for the SW update command to transition to the proper state.
+ * @details \b Inputs: none
+ * @details \b Outputs: none
+ * @return next state of the update mode state machine
+ *************************************************************************/
 static MODE_SW_UPDATE_STATE_T handleUpdateModeUpdateState( void )
 {
     MODE_SW_UPDATE_STATE_T state = SW_UPDATE_UPDATE_STATE;
@@ -82,6 +115,17 @@
     return state;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The handleUpdateModeVerifyState function handles the update mode verify state.
+ * This state checks for the destination of the current update which can be
+ * either firmware or FPGA. If the update destination was FPGA it makes sure
+ * the FPGA update has been completed and then transitions to standby mode.
+ * If the update destination was firmware, it transitions to standby mode.
+ * @details \b Inputs: none
+ * @details \b Outputs: none
+ * @return next state of the update mode state machine
+ *************************************************************************/
 static MODE_SW_UPDATE_STATE_T handleUpdateModeVerifyState( void )
 {
     MODE_SW_UPDATE_STATE_T state = SW_UPDATE_VERIFY_STATE;
@@ -107,6 +151,14 @@
     return state;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The handleUpdateModeAbortState function handles the update mode abort state.
+ * This state transitions to standby mode upon requesting to abort the update.
+ * @details \b Inputs: none
+ * @details \b Outputs: none
+ * @return next state of the update mode state machine
+ *************************************************************************/
 static MODE_SW_UPDATE_STATE_T handleUpdateModeAbortState( void )
 {
     MODE_SW_UPDATE_STATE_T state = SW_UPDATE_ABORT_STATE;
@@ -116,9 +168,4 @@
     return state;
 }
 
-
-
-
-
-
-
+/**@}*/