Index: firmware/App/Modes/ModeInitPOST.c
===================================================================
diff -u -r8acad167bcf7ad07043192007e59d253a5216e3a -rafa9d4924d55ac4fc98270a012e92dd1f6ee65d0
--- firmware/App/Modes/ModeInitPOST.c	(.../ModeInitPOST.c)	(revision 8acad167bcf7ad07043192007e59d253a5216e3a)
+++ firmware/App/Modes/ModeInitPOST.c	(.../ModeInitPOST.c)	(revision afa9d4924d55ac4fc98270a012e92dd1f6ee65d0)
@@ -44,6 +44,8 @@
 /// Delay (in task intervals) after POST completes.
 #define POST_COMPLETED_DELAY        ( 2 * MS_PER_SECOND / TASK_GENERAL_INTERVAL )
 
+/// Maximum wait time for UI to send its final POST result.
+#define POST_UI_MAX_WAIT_TIME       ( 2 * MS_PER_SECOND / TASK_GENERAL_INTERVAL )
 
 // ********** private data **********
 
@@ -54,13 +56,17 @@
 
 static BOOL uiPOSTPassed;                                   ///< Final result for UI POST tests (TRUE = passed, FALSE = failed).
 static BOOL dgPOSTPassed;                                   ///< Final result for DG POST tests (TRUE = passed, FALSE = failed).
+static BOOL uiPOSTResultReceived;                           ///< Have we received a final POST result from the UI?
+static BOOL dgPOSTResultReceived;                           ///< Have we received a final POST result from the DG?
+static U32  waitForUIPostTimerCtr;                          ///< Timer counter to limit wait for UI final POST result.
 
 static U32  postCompleteDelayTimerCtr;                      ///< Timer counter for 2 second delay after POST completes and before transitioning to Standbymode.
 
 // ********** private function prototypes **********
 
 static HD_POST_STATE_T handlePOSTStatus( SELF_TEST_STATUS_T testStatus );
 static SELF_TEST_STATUS_T execFWCompatibilityTest( void );
+static SELF_TEST_STATUS_T execUITest( void );
 
 /*********************************************************************//**
  * @brief
@@ -77,6 +83,9 @@
     tempPOSTPassed = TRUE;
     uiPOSTPassed = FALSE;
     dgPOSTPassed = FALSE;
+    uiPOSTResultReceived = FALSE;
+    dgPOSTResultReceived = FALSE;
+    waitForUIPostTimerCtr = 0;
     postCompleteDelayTimerCtr = 0;
 }
 
@@ -113,13 +122,11 @@
         // Ignore stop button in this mode.
     }
 
-    // TODO - send POST status on CAN
-
     // Execute current POST state     *Note - these switch cases must be in same order as enum HD_POST_States
     switch ( postState )
     {
         case POST_STATE_START:
-            postState = POST_STATE_FW_COMPATIBILITY;
+            postState = POST_STATE_FW_INTEGRITY;
 #ifdef SKIP_POST
             postState = POST_STATE_COMPLETED;
 #endif
@@ -129,11 +136,6 @@
 #endif
             break;
 
-        case POST_STATE_FW_COMPATIBILITY:
-            testStatus = execFWCompatibilityTest();
-            postState = handlePOSTStatus( testStatus );
-            break;
-
         case POST_STATE_FW_INTEGRITY:
             testStatus = execIntegrityTest();
             postState = handlePOSTStatus( testStatus );
@@ -213,11 +215,20 @@
             postState = handlePOSTStatus( testStatus );
             break;
 
-            // Should be last POST (and last POST test must be a test that completes in a single call)
+        case POST_STATE_UI_POST:
+            testStatus = execUITest();
+            postState = handlePOSTStatus( testStatus );
+            break;
+
+        case POST_STATE_FW_COMPATIBILITY:
+            testStatus = execFWCompatibilityTest();
+            postState = handlePOSTStatus( testStatus );
+            break;
+
+        // Should be last POST (and last POST test must be a test that completes in a single call)
         case POST_STATE_FPGA:
             testStatus = execFPGATest();
             handlePOSTStatus( testStatus );  // Ignoring return value because last test
-
             if ( TRUE == tempPOSTPassed )
             {
                 postState = POST_STATE_COMPLETED;
@@ -228,8 +239,6 @@
             }
             break;
 
-        // TODO - add POST test requiring all DG and UI POST tests to pass
-
         case POST_STATE_COMPLETED:
             // Set overall HD POST status to "passed"
             postPassed = TRUE;
@@ -280,6 +289,7 @@
 void signalUIPOSTFinalResult( BOOL passed )
 {
     uiPOSTPassed = passed;
+    uiPOSTResultReceived = TRUE;
 }
 
 /*********************************************************************//**
@@ -294,6 +304,7 @@
 void signalDGPOSTFinalResult( BOOL passed )
 {
     dgPOSTPassed = passed;
+    dgPOSTResultReceived = TRUE;
 }
 
 /*********************************************************************//**
@@ -372,9 +383,48 @@
 {
     SELF_TEST_STATUS_T result = SELF_TEST_STATUS_PASSED;
 
-    // TODO - implement
+    // TODO - implement (need UI to include its version/compatibility info in its request for f/w versions so we can check compatibility)
+    //SW_COMPATIBILITY_REV
 
     return result;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The execUITest function executes the UI POST passed test.
+ * @details Inputs: uiPOSTResultReceived, uiPOSTPassed, waitForUIPostTimerCtr
+ * @details Outputs: waitForUIPostTimerCtr
+ * @return in progress, passed, or failed
+ *************************************************************************/
+static SELF_TEST_STATUS_T execUITest( void )
+{
+#ifndef DISABLE_UI_POST_TEST
+    SELF_TEST_STATUS_T result = SELF_TEST_STATUS_IN_PROGRESS;
+
+    // UI should have sent POST results before we start this test
+    if ( TRUE == uiPOSTResultReceived )
+    {
+        if ( TRUE == uiPOSTPassed )
+        {
+            result = SELF_TEST_STATUS_PASSED;
+        }
+        else
+        {
+            SET_ALARM_WITH_1_U32_DATA( ALARM_ID_HD_UI_POST_FAILED, 0 )
+            result = SELF_TEST_STATUS_FAILED;
+        }
+    }
+    // If UI had not already sent POST results before we started, allow finite period for UI to send.
+    else if ( ++waitForUIPostTimerCtr > POST_UI_MAX_WAIT_TIME )
+    {
+        SET_ALARM_WITH_1_U32_DATA( ALARM_ID_HD_UI_POST_FAILED, 1 )
+        result = SELF_TEST_STATUS_FAILED;
+    }
+#else
+    SELF_TEST_STATUS_T result = SELF_TEST_STATUS_PASSED;
+#endif
+
+    return result;
+}
+
 /**@}*/