Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r98f34c2ab63d51a1bf248db454ebc04e184d4748 -r1a5aa1dff6978966ecda860b09c07a84e80399fe
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 98f34c2ab63d51a1bf248db454ebc04e184d4748)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 1a5aa1dff6978966ecda860b09c07a84e80399fe)
@@ -623,10 +623,11 @@
  * appropriate CAN channel.
  * @details Inputs: none
  * @details Outputs: DG start/stop trimmer heater command msg constructed and queued.
- * @param start TRUE indicates start heater, FALSE indicates stop heater
+ * @param start TRUE indicates start heater, FALSE indicates stop heater
+ * @param trimmerHtrTemp target temperature for trimmer heater
  * @return TRUE if msg successfully queued for transmit, FALSE if not
  *************************************************************************/
-BOOL sendDGStartStopTrimmerHeaterCommand( BOOL start )
+BOOL sendDGStartStopTrimmerHeaterCommand( BOOL start, F32 trimmerHtrTemp )
 {
     BOOL result;
     MESSAGE_T msg;
@@ -635,10 +636,12 @@
     // Create a message record
     blankMessage( &msg );
     msg.hdr.msgID = MSG_ID_DG_START_STOP_TRIMMER_HEATER_CMD;
-    msg.hdr.payloadLen = sizeof( BOOL );
+    msg.hdr.payloadLen = sizeof( BOOL ) + sizeof( F32 );
+
+    memcpy( payloadPtr, &start, sizeof( BOOL ) );
+    payloadPtr += sizeof( BOOL );
+    memcpy( payloadPtr, &trimmerHtrTemp, sizeof( F32 ) );
 
-    memcpy( payloadPtr, &start, sizeof( BOOL ) );
-
     // 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_HD_2_DG, ACK_REQUIRED );
 
@@ -3681,7 +3684,7 @@
     sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
 }
 
-/*************************************************************************
+/*********************************************************************//**
  * @brief
  * The handleTestSetTreatmentParameter function handles a request to set
  * a specific treatment parameter value.
@@ -3707,7 +3710,7 @@
     sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
 }
 
-/*************************************************************************
+/*********************************************************************//**
  * @brief
  * The handleHomeHDValve function handles a request to home an HD valve
  * @details Inputs: none
@@ -3859,7 +3862,7 @@
 }
 #endif
 
-/*************************************************************************
+/*********************************************************************//**
  * @brief
  * The handleSetAirTrapBroadcastIntervalOverrideRequest function handles a
  * request to override the air trap data broadcast interval.
@@ -3891,7 +3894,7 @@
     sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
 }
 
-/*************************************************************************
+/*********************************************************************//**
  * @brief
  * The handleSetAirTrapLevelSensorOverrideRequest function handles a request to
  * override an air trap level sensor.