Index: firmware/App/Drivers/FlowSensor.c
===================================================================
diff -u -ra0c144ed9f72066d7a7b1d047b01fb76ca56d667 -rbef932558c7e8e50ab60c5f8c0c1967b8d7d4ca4
--- firmware/App/Drivers/FlowSensor.c	(.../FlowSensor.c)	(revision a0c144ed9f72066d7a7b1d047b01fb76ca56d667)
+++ firmware/App/Drivers/FlowSensor.c	(.../FlowSensor.c)	(revision bef932558c7e8e50ab60c5f8c0c1967b8d7d4ca4)
@@ -1,17 +1,17 @@
 /**************************************************************************
 *
-* Copyright (c) 2024-2024 Diality Inc. - All Rights Reserved.
+* Copyright (c) 2025-2026 Diality Inc. - All Rights Reserved.
 *
 * THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
 * WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
 *
 * @file    FlowSensor.c
 *
-* @author  (last)      Sean Nash
-* @date    (last)      21-Nov-2024
+* @author  (last)      “rkallala”
+* @date    (last)      19-Jan-2026
 *
-* @author  (original)  Sean Nash
-* @date    (original)  21-Nov-2024
+* @author  (original)  Michael Garthwaite
+* @date    (original)  08-Sep-2025
 *
 ***************************************************************************/
 
@@ -33,6 +33,7 @@
 
 static OVERRIDE_S32_T currentFlowReadings[ NUM_OF_FLOW_SENSORS ];                                       ///< Current flow sensor pressure readings (overrideable).
 static OVERRIDE_F32_T currentFlowTempReadings[ NUM_OF_FLOW_SENSORS ];                                   ///< Current flow sensor temperature readings (overrideable).
+static F32 currentFlowInternalTempReadings[ NUM_OF_FLOW_SENSORS ];                                      ///< Current flow sensor internal temperature readings.
 
 // ********** private function prototypes **********
 
@@ -59,6 +60,8 @@
         currentFlowTempReadings[ sensor ].ovData = 0.0F;
         currentFlowTempReadings[ sensor ].ovInitData = 0.0F;
         currentFlowTempReadings[ sensor ].override = OVERRIDE_RESET;
+
+        currentFlowInternalTempReadings[ sensor ] = 0.0F;
     }
 }
 
@@ -81,6 +84,10 @@
     // Update and convert raw flow sensor temperatures to deg C
     currentFlowTempReadings[ P16_FLOW ].data = (F32)( (S16)getFPGAFlowP16Temp() ) / FLOW_TEMPERATURE_DIVIDER;
     currentFlowTempReadings[ P7_FLOW ].data   = (F32)( (S16)getFPGAFlowP7Temp() ) / FLOW_TEMPERATURE_DIVIDER;
+
+    // Update and convert raw flow sensor internal temperatures to deg C
+    currentFlowInternalTempReadings[ P16_FLOW ] = (F32)( (S16)getFPGAFlowP16InternalTemp() ) / FLOW_TEMPERATURE_DIVIDER;
+    currentFlowInternalTempReadings[ P7_FLOW ] = (F32)( (S16)getFPGAFlowP7InternalTemp() ) / FLOW_TEMPERATURE_DIVIDER;
 }
 
 /*********************************************************************//**
@@ -143,7 +150,33 @@
     return result;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The getFlowInternalTemperature function gets the current
+ * internal temperature (in deg C) for a given flow sensor.
+ * @details \b Alarm: ALARM_ID_RO_SOFTWARE_FAULT if given flow sensor is invalid.
+ * @details \b Inputs: currentFlowInternalTempReadings
+ * @details \b Outputs: none
+ * @param sensor ID of flow sensor to get internal temperature for.
+ * @return The current flow sensor internal temperature (in deg C) of the given flow sensor.
+ *************************************************************************/
+F32 getFlowInternalTemperature( FLOW_SENSORS_T sensor )
+{
+    F32 result = 0.0F;
 
+    if ( sensor < NUM_OF_FLOW_SENSORS )
+    {
+        result = currentFlowInternalTempReadings[ sensor ];
+    }
+    else
+    {
+        SET_ALARM_WITH_2_U32_DATA( ALARM_ID_FP_SOFTWARE_FAULT, FP_FAULT_ID_FLOW_SENSOR_INVALID_SENSOR2, (U32)sensor )
+    }
+
+    return result;
+}
+
+
 /*************************************************************************
  *                       TEST SUPPORT FUNCTIONS
  *************************************************************************/