Index: firmware/App/Controllers/ROPump.h
===================================================================
diff -u -re30951f62cdc9c52f20e9218df947d3860b3c7a7 -raa36ab1ed13d099286cedcbd066f7dce11146d13
--- firmware/App/Controllers/ROPump.h	(.../ROPump.h)	(revision e30951f62cdc9c52f20e9218df947d3860b3c7a7)
+++ firmware/App/Controllers/ROPump.h	(.../ROPump.h)	(revision aa36ab1ed13d099286cedcbd066f7dce11146d13)
@@ -30,7 +30,19 @@
 
 // ********** public definitions **********
 #define MAX_RO_FLOWRATE_LPM             1.2            ///< Maximum target RO flow rate (in LPM)
-#define MIN_RO_FLOWRATE_LPM             0.2            ///< Minimum target RO flow rate (in LPM)
+#define MIN_RO_FLOWRATE_LPM             0.2            ///< Minimum target RO flow rate (in LPM)
+
+#pragma pack(push, 1)
+/// RO pump data struct.
+typedef struct
+{
+    U32 setROPumpPressure;                  ///< RO pump pressure set target
+    F32 measROFlowRate;                     ///< RO flow rate measurement
+    F32 roPumpPWM;                          ///< RO pump pwm
+    U32 roPumpState;                        ///< RO pump current state
+    F32 roPumpTgtPressure;                  ///< RO pump target pressure
+} RO_PUMP_DATA_T;
+#pragma pack(pop)
 
 // ********** public function prototypes **********