Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r3d8b84b8ce7ee9526fbabccb9e51d691a3df6305 -r853d846a60d61d1c6f8987d9cdcfc2bc32913840
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 3d8b84b8ce7ee9526fbabccb9e51d691a3df6305)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 853d846a60d61d1c6f8987d9cdcfc2bc32913840)
@@ -227,7 +227,7 @@
  * @param almData2 2nd data associated with alarm
  * @return TRUE if msg successfully queued for transmit, FALSE if not
  *************************************************************************/
-BOOL broadcastAlarmTriggered( U16 alarm, ALARM_DATA_T almData1, ALARM_DATA_T almData2 )
+BOOL broadcastAlarmTriggered( U32 alarm, ALARM_DATA_T almData1, ALARM_DATA_T almData2 )
 {
     BOOL result;
     MESSAGE_T msg;
@@ -236,10 +236,10 @@
     // create a message record
     blankMessage( &msg );
     msg.hdr.msgID = MSG_ID_ALARM_TRIGGERED;
-    msg.hdr.payloadLen = sizeof( U16 ) + sizeof( ALARM_DATA_T ) + sizeof( ALARM_DATA_T );
+    msg.hdr.payloadLen = sizeof( U32 ) + sizeof( ALARM_DATA_T ) + sizeof( ALARM_DATA_T );
 
-    memcpy( payloadPtr, &alarm, sizeof( U16 ) );
-    payloadPtr += sizeof( U16 );
+    memcpy( payloadPtr, &alarm, sizeof( U32 ) );
+    payloadPtr += sizeof( U32 );
     memcpy( payloadPtr, &almData1, sizeof( ALARM_DATA_T ) );
     payloadPtr += sizeof( ALARM_DATA_T );
     memcpy( payloadPtr, &almData2, sizeof( ALARM_DATA_T ) );
@@ -259,7 +259,7 @@
  * @param alarm ID of alarm cleared
  * @return TRUE if msg successfully queued for transmit, FALSE if not
  *************************************************************************/
-BOOL broadcastAlarmCleared( U16 alarm )
+BOOL broadcastAlarmCleared( U32 alarm )
 {
     BOOL result;
     MESSAGE_T msg;
@@ -268,9 +268,9 @@
     // create a message record
     blankMessage( &msg );
     msg.hdr.msgID = MSG_ID_ALARM_CLEARED;
-    msg.hdr.payloadLen = sizeof( U16 );
+    msg.hdr.payloadLen = sizeof( U32 );
 
-    memcpy( payloadPtr, &alarm, sizeof( U16 ) );
+    memcpy( payloadPtr, &alarm, sizeof( U32 ) );
 
     // serialize the message (w/ sync, CRC, and appropriate CAN padding) and add serialized message data to appropriate comm buffer
     result = serializeMessage( msg, COMM_BUFFER_OUT_CAN_DG_ALARM, ACK_REQUIRED );
@@ -280,6 +280,35 @@
 
 /*********************************************************************//**
  * @brief
+ * The broadcastAlarmConditionCleared function constructs an alarm condition
+ * cleared msg to be broadcast and queues the msg for transmit on the
+ * appropriate CAN channel.
+ * @details Inputs: none
+ * @details Outputs: alarm condition cleared msg constructed and queued.
+ * @param alarm ID of alarm which alarm condition is cleared
+ * @return TRUE if msg successfully queued for transmit, FALSE if not
+ *************************************************************************/
+BOOL broadcastAlarmConditionCleared( U32 alarm )
+{
+    BOOL result;
+    MESSAGE_T msg;
+    U08 *payloadPtr = msg.payload;
+
+    // create a message record
+    blankMessage( &msg );
+    msg.hdr.msgID = MSG_ID_ALARM_CONDITION_CLEARED;
+    msg.hdr.payloadLen = sizeof( U32 );
+
+    memcpy( payloadPtr, &alarm, sizeof( U32 ) );
+
+    // serialize the message (w/ sync, CRC, and appropriate CAN padding) and add serialized message data to appropriate comm buffer
+    result = serializeMessage( msg, COMM_BUFFER_OUT_CAN_DG_ALARM, ACK_REQUIRED );
+
+    return result;
+}
+
+/*********************************************************************//**
+ * @brief
  * The broadcastAccelData function constructs an accelerometer data msg to
  * be broadcast and queues the msg for transmit on the appropriate CAN channel.
  * @details Inputs: none
@@ -853,6 +882,30 @@
     return result;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The sendCommandResponseMsg function constructs a command response to HD
+ * and queues the msg for transmit on the appropriate CAN channel.
+ * @details Inputs: none
+ * @details Outputs: Command response msg constructed and queued.
+ * @param cmdResponsePtr pointer to command response data record
+ * @return none
+ *************************************************************************/
+void sendCommandResponseMsg( DG_CMD_RESPONSE_T *cmdResponsePtr )
+{
+    MESSAGE_T msg;
+
+    // Create a message record
+    blankMessage( &msg );
+    msg.hdr.msgID = MSG_ID_DG_COMMAND_RESPONSE;
+    msg.hdr.payloadLen = sizeof( DG_CMD_RESPONSE_T );
+
+    memcpy( msg.payload, cmdResponsePtr, sizeof( DG_CMD_RESPONSE_T ) );
+
+    // Serialize the message (w/ sync, CRC, and appropriate CAN padding) and add serialized message data to appropriate comm buffer
+    serializeMessage( msg, COMM_BUFFER_OUT_CAN_DG_2_HD, ACK_REQUIRED );
+}
+
 // ***********************************************************************
 // **************** Message Handling Helper Functions ********************
 // ***********************************************************************
@@ -978,20 +1031,13 @@
 {
     BOOL result = FALSE;
 
-    if ( message->hdr.payloadLen == sizeof( U32 ) )
+    if ( message->hdr.payloadLen == sizeof( TRIMMER_HEATER_CMD_T ) )
     {
-        BOOL startingHeater;
+        TRIMMER_HEATER_CMD_T heaterCmd;
 
-        memcpy( &startingHeater, message->payload, sizeof( U32 ) );
-
-        if ( TRUE == startingHeater )
-        {
-            result = startTrimmerHeaterCmd();
-        }
-        else
-        {
-            result = stopTrimmerHeaterCmd();
-        }
+        result = TRUE;
+        memcpy( &heaterCmd, message->payload, sizeof( TRIMMER_HEATER_CMD_T ) );
+        handleTrimmerHeaterCmd( &heaterCmd );
     }
 
     sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, COMM_BUFFER_OUT_CAN_DG_2_HD, result );