Index: firmware/App/Drivers/PressureSensor.c
===================================================================
diff -u -rf730082d809bc52c15b2d17b8fd0a8d535e5c21a -raf8485c010085b535a81e9c44426c60eea2535e6
--- firmware/App/Drivers/PressureSensor.c	(.../PressureSensor.c)	(revision f730082d809bc52c15b2d17b8fd0a8d535e5c21a)
+++ firmware/App/Drivers/PressureSensor.c	(.../PressureSensor.c)	(revision af8485c010085b535a81e9c44426c60eea2535e6)
@@ -25,12 +25,102 @@
 
 // ********** private definitions **********
 
+#define VENOUS_PRESSURE_OFFSET              ( 1638 )                                        ///< Offset for 14-bit venous pressure sensor reading.
+#define VENOUS_PRESSURE_SCALE               ( 14745 - VENOUS_PRESSURE_OFFSET )              ///< Scale for venous pressure sensor.
+#define VENOUS_PRESSURE_MIN_PSI             ( -30.0F )                                      ///< Minimum of scale for venous pressure sensor reading (in PSI).
+#define VENOUS_PRESSURE_MAX_PSI             ( 30.0F )                                       ///< Maximum of scale for venous pressure sensor reading (in PSI).
+
+#define ARTERIAL_PRESSURE_OFFSET            ( 1638 )                                        ///< Offset for 14-bit arterial pressure sensor reading.
+#define ARTERIAL_PRESSURE_SCALE             ( 14745 - VENOUS_PRESSURE_OFFSET )              ///< Scale for arterial pressure sensor.
+#define ARTERIAL_PRESSURE_MIN_PSI           ( -30.0F )                                      ///< Minimum of scale for arterial pressure sensor reading (in PSI).
+#define ARTERIAL_PRESSURE_MAX_PSI           ( 30.0F )                                       ///< Maximum of scale for arterial pressure sensor reading (in PSI).
 
+#define PSI_TO_MMHG                         ( 51.7149F )                                    ///< Conversion factor for converting PSI to mmHg.
+
 // ********** private data **********
 
+/// Current pressure sensor readings (overrideable).
+static OVERRIDE_F32_T currentPressureReadings[ NUM_OF_PRESSURE_SENSORS ];
 
 // ********** private function prototypes **********
 
+/*********************************************************************//**
+ * @brief
+ * The initPressureSensor function initializes the Pressure Sensor unit.
+ * @details \b Inputs: none
+ * @details \b Outputs: Pressure Sensor unit is initialized.
+ * @return none
+ *************************************************************************/
+void initPressureSensor( void )
+{
+    currentPressureReadings[ PRESSURE_SENSOR_ARTERIAL ].data = 0;
+    currentPressureReadings[ PRESSURE_SENSOR_ARTERIAL ].ovData = 0;
+    currentPressureReadings[ PRESSURE_SENSOR_ARTERIAL ].ovInitData = 0;
+    currentPressureReadings[ PRESSURE_SENSOR_ARTERIAL ].override = OVERRIDE_RESET;
+
+    currentPressureReadings[ PRESSURE_SENSOR_VENOUS ].data = 0;
+    currentPressureReadings[ PRESSURE_SENSOR_VENOUS ].ovData = 0;
+    currentPressureReadings[ PRESSURE_SENSOR_VENOUS ].ovInitData = 0;
+    currentPressureReadings[ PRESSURE_SENSOR_VENOUS ].override = OVERRIDE_RESET;
+}
+
+/*********************************************************************//**
+ * @brief
+ * The readPressureSensors function gets the current pressure reading
+ * for a all pressure sensors from the FPGA.
+ * @note This function should be called periodically to maintain fresh
+ * sensor readings for all pressure sensors.
+ * @details \b Inputs: FPGA
+ * @details \b Outputs: none
+ * @return none
+ *************************************************************************/
+void readPressureSensors( void )
+{
+    F32 pressure;
+
+    // Convert raw pressures to PSI and then to mmHg
+    pressure = ( (F32)( getPBAPressure() - ARTERIAL_PRESSURE_OFFSET ) *
+                 ( ARTERIAL_PRESSURE_MAX_PSI - ARTERIAL_PRESSURE_MIN_PSI ) / (F32)ARTERIAL_PRESSURE_SCALE ) + ARTERIAL_PRESSURE_MIN_PSI;
+    currentPressureReadings[ PRESSURE_SENSOR_ARTERIAL ].data = pressure * PSI_TO_MMHG;
+
+    pressure = ( (F32)( getPBOPressure() - VENOUS_PRESSURE_OFFSET ) *
+                 ( VENOUS_PRESSURE_MAX_PSI - VENOUS_PRESSURE_MIN_PSI ) / (F32)VENOUS_PRESSURE_SCALE ) + VENOUS_PRESSURE_MIN_PSI;
+    currentPressureReadings[ PRESSURE_SENSOR_VENOUS ].data = pressure * PSI_TO_MMHG;
+
+    //
+}
+//U32 getPBATemperature( void );
+//U08 getPBAReadCounter( void );
+//U08 getPBAErrorCounter( void );
+
+/*********************************************************************//**
+ * @brief
+ * The getPressure function gets the current pressure (in mmHg) for a given
+ * pressure sensor.
+ * @details \b Alarm: ALARM_ID_TD_SOFTWARE_FAULT if given sensor is invalid.
+ * @details \b Inputs: currentPressureReadings
+ * @details \b Outputs: none
+ * @param sensor ID of pressure sensor to get reading for.
+ * @return The current pressure (in mmHg) of the given pressure sensor.
+ *************************************************************************/
+F32 getPressure( PRESSURE_SENSORS_T sensor )
+{
+    F32 result = 0.0F;
+
+    if ( sensor < NUM_OF_PRESSURE_SENSORS )
+    {
+        result = currentPressureReadings[ sensor ].data;
+        if ( OVERRIDE_KEY == currentPressureReadings[ sensor ].override )
+        {
+            result = currentPressureReadings[ sensor ].ovData;
+        }
+    }
+    else
+    {
+        SET_ALARM_WITH_2_U32_DATA( ALARM_ID_TD_SOFTWARE_FAULT, SW_FAULT_ID_PRESSURE_SENSOR_INVALID_SENSOR, sensor )
+    }
+
+    return result;
+}
 
-
 /**@}*/