Index: firmware/App/Services/Reservoirs.c
===================================================================
diff -u -r5a61bccd959265c00e5276ba23391198ca82b6dd -r5ff39fd6948ae3656b4035c85325bd8fca0a37f3
--- firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision 5a61bccd959265c00e5276ba23391198ca82b6dd)
+++ firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision 5ff39fd6948ae3656b4035c85325bd8fca0a37f3)
@@ -17,6 +17,7 @@
 
 #include <string.h>     // for memcpy()
 
+#include "TaskGeneral.h"
 #include "OperationModes.h"
 #include "SystemCommMessages.h"
 #include "Reservoirs.h"
@@ -37,8 +38,12 @@
 #define MAX_DRAIN_VOLUME_ML                         MAX_RESERVOIR_VOLUME_ML                 ///> Maximum drain volume in mL.
 #define MIN_DRAIN_VOLUME_ML                         20                                      ///> Minimum drain volume in mL.
 
+#define RESERVOIR_DATA_PUB_INTERVAL                 ( MS_PER_SECOND / TASK_GENERAL_INTERVAL )  ///< interval (ms/task time) at which the reservoir data is published on the CAN bus.
+
 // ********** private data **********
 
+static U32 reservoirDataPublicationTimerCounter = 0;                                        ///< used to schedule reservoir data publication to CAN bus.
+
 static OVERRIDE_U32_T activeReservoir = { 0, 0, 0, 0 };                                     ///< The active reservoir that the DG is filling/draining/etc.
 static OVERRIDE_U32_T fillVolumeTargetMl = { 0, 0, 0, 0 };                                  ///< The target reservoir fill volume (in mL).
 static OVERRIDE_U32_T drainVolumeTargetMl = { 0, 0, 0, 0 };                                 ///< The target reservoir drain volume (in mL).
@@ -61,17 +66,35 @@
     drainVolumeTargetMl.data = DEFAULT_DRAIN_VOLUME_ML;
 }
 
+void execReservoirs( void )
+{
+    // TODO - publish active reservoir, fill/drain volume targets at 1 Hz.
+    if ( ++reservoirDataPublicationTimerCounter >= RESERVOIR_DATA_PUB_INTERVAL )
+    {
+        U32 actRes = getActiveReservoir();
+        U32 filVol = getReservoirFillVolumeTargetMl();
+        U32 drnVol = getReservoirDrainVolumeTargetMl();
+        broadcastReservoirData( actRes, filVol, drnVol );
+        reservoirDataPublicationTimerCounter = 0;
+    }
+}
+
 BOOL setActiveReservoir( RESERVOIR_ID_T resID )
 {
+    BOOL result = FALSE;
+
     // switch reservoir command only valid in re-circulate mode
     if ( MODE_CIRC == getCurrentOperationMode() )
     {
         // validate parameters
         if ( resID < NUM_OF_RESERVOIRS )
         {
             activeReservoir.data = (U32)resID;
+            result = TRUE;
         }
     }
+
+    return result;
 }
 
 /*********************************************************************//**