Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -ra60ec05d359c0d3f014015e9080b6dbcef0fea28 -rffb9960f7b97e71ba78844c60158d344c909db94
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision a60ec05d359c0d3f014015e9080b6dbcef0fea28)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision ffb9960f7b97e71ba78844c60158d344c909db94)
@@ -30,8 +30,17 @@
 // ********** private definitions **********
 
 /// Default publication interval for pressure and occlusion data.
-#define PRES_OCCL_DATA_PUB_INTERVAL        ( MS_PER_SECOND / TASK_GENERAL_INTERVAL )  ///< interval (ms/task time) at which the pressure/occlusion data is published on the CAN bus.
+#define PRES_OCCL_DATA_PUB_INTERVAL         ( MS_PER_SECOND / TASK_GENERAL_INTERVAL )       ///< interval (ms/task time) at which the pressure/occlusion data is published on the CAN bus.
 
+#define ARTERIAL_PRESSURE_V_BIAS            ( 3.0 )                                         ///< Bias voltage for arterial pressure sensor.
+#define ARTERIAL_PRESSURE_SENSITIVITY       ( 0.000005 )                                    ///< Sensitivity for arterial pressure sensor is 5 uV / mmHg
+#define ARTERIAL_PRESSURE_V_PER_BIT         ( ARTERIAL_PRESSURE_V_BIAS / (F32)0x800000 )    ///< Volts per bit in 24-bit arterial pressure sensor reading.
+
+#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                 ( 30.0 )                                        ///< Minimum of scale for venous pressure sensor reading (in TBD u/m).
+#define VENOUS_PRESSURE_MAX                 ( 90.0 )                                        ///< Maximum of scale for venous pressure sensor reading (in TBD u/m).
+
 /// Defined states for the pressure and occlusion monitor state machine.
 typedef enum PresOccl_States
 {
@@ -220,15 +229,15 @@
 {
     PRESSURE_STATE_T result = PRESSURE_CONTINUOUS_READ_STATE;
 
-    U16 artPres = getFPGAArterialPressure();
+    S32 artPres = getFPGAArterialPressure();
     U16 venPres = getFPGAVenousPressure();
     U16 bldOccl = getFPGABloodPumpOcclusion();
     U16 dliOccl = getFPGADialInPumpOcclusion();
     U16 dloOccl = getFPGADialOutPumpOcclusion();
 
     // TODO - convert ADC counts to mmHg for each sensor
-    arterialPressure.data = (F32)artPres;
-    venousPressure.data = (F32)venPres;
+    arterialPressure.data = ARTERIAL_PRESSURE_V_PER_BIT * ( (F32)(artPres) / ( ARTERIAL_PRESSURE_SENSITIVITY / ARTERIAL_PRESSURE_V_BIAS ) );
+    venousPressure.data = ( (F32)(venPres - VENOUS_PRESSURE_OFFSET) * (VENOUS_PRESSURE_MAX - VENOUS_PRESSURE_MIN) / (F32)VENOUS_PRESSURE_SCALE ) - VENOUS_PRESSURE_MIN;
     bloodPumpOcclusion.data = (F32)bldOccl;
     dialInPumpOcclusion.data = (F32)dliOccl;
     dialOutPumpOcclusion.data = (F32)dloOccl;
Index: firmware/App/HDCommon.h
===================================================================
diff -u -ra60ec05d359c0d3f014015e9080b6dbcef0fea28 -rffb9960f7b97e71ba78844c60158d344c909db94
--- firmware/App/HDCommon.h	(.../HDCommon.h)	(revision a60ec05d359c0d3f014015e9080b6dbcef0fea28)
+++ firmware/App/HDCommon.h	(.../HDCommon.h)	(revision ffb9960f7b97e71ba78844c60158d344c909db94)
@@ -45,7 +45,7 @@
     #define DISABLE_PRESSURE_CHECKS         1
 //    #define SHOW_LOAD_CELL_IN_ROTOR_RPM     1
 //    #define READ_FPGA_ASYNC_DATA            1
-//    #define EMC_TEST_BUILD                  1
+    #define EMC_TEST_BUILD                  1
     #define ALARMS_DEBUG                    1
 
     #include <stdio.h>
Index: firmware/App/Services/AlarmMgmt.c
===================================================================
diff -u -ra60ec05d359c0d3f014015e9080b6dbcef0fea28 -rffb9960f7b97e71ba78844c60158d344c909db94
--- firmware/App/Services/AlarmMgmt.c	(.../AlarmMgmt.c)	(revision a60ec05d359c0d3f014015e9080b6dbcef0fea28)
+++ firmware/App/Services/AlarmMgmt.c	(.../AlarmMgmt.c)	(revision ffb9960f7b97e71ba78844c60158d344c909db94)
@@ -16,6 +16,8 @@
  *
  **************************************************************************/
 
+#include "mibspi.h"
+
 #include "AlarmLamp.h"
 #include "OperationModes.h"
 #include "SystemCommMessages.h"
@@ -123,6 +125,12 @@
 /// A blank alarm data record for alarms that do not include alarm data when triggered.
 const ALARM_DATA_T blankAlarmData = { ALARM_DATA_TYPE_NONE, 0 };
 
+// pin assignment for backup alarm audio enable
+#define BACKUP_AUDIO_ENABLE_SPI3_PORT_MASK    0x00000001  // (SPI3-CS0 - re-purposed as output GPIO)
+// backup alarm audio enable/disable macros
+#define SET_BACKUP_AUDIO_ENABLE()             {mibspiREG3->PC3 |= BACKUP_AUDIO_ENABLE_SPI3_PORT_MASK;}
+#define CLR_BACKUP_AUDIO_ENABLE()             {mibspiREG3->PC3 &= ~BACKUP_AUDIO_ENABLE_SPI3_PORT_MASK;}
+
 // ********** private data **********
 
 /// interval (in ms) at which to publish alarm status to CAN bus
@@ -167,6 +175,9 @@
     ALARM_PRIORITY_T p;
     ALARM_ID_T a;
 
+    // disable backup audio
+    CLR_BACKUP_AUDIO_ENABLE();
+
     // initialize alarm states and start time stamps
     for ( a = ALARM_ID_NO_ALARM; a < NUM_OF_ALARM_IDS; a++ )
     {
Index: firmware/App/Services/FPGA.c
===================================================================
diff -u -rcc511a2e779106c4fda8305c25bd1f9d9fbf06ce -rffb9960f7b97e71ba78844c60158d344c909db94
--- firmware/App/Services/FPGA.c	(.../FPGA.c)	(revision cc511a2e779106c4fda8305c25bd1f9d9fbf06ce)
+++ firmware/App/Services/FPGA.c	(.../FPGA.c)	(revision ffb9960f7b97e71ba78844c60158d344c909db94)
@@ -1212,9 +1212,9 @@
  * Outputs : none
  * @return last arterial pressure reading
  *************************************************************************/
-U16 getFPGAArterialPressure( void )
+S32 getFPGAArterialPressure( void )
 {
-    return 0;   // TODO - return reading when available
+    return (S32)( fpgaSensorReadings.adc1Channel0 & MASK_OFF_U32_MSB ) - 0x800000;
 }
 
 /*********************************************************************//**
@@ -1227,7 +1227,8 @@
  *************************************************************************/
 U16 getFPGAVenousPressure( void )
 {
-    return 0;  // TODO - return reading when available
+    // 14-bits
+    return fpgaSensorReadings.venousPressure & 0x3FFF;
 }
 
 /*********************************************************************//**
Index: firmware/App/Services/FPGA.h
===================================================================
diff -u -r4b22b45e775c0525bc1d76e83e265af91a59785e -rffb9960f7b97e71ba78844c60158d344c909db94
--- firmware/App/Services/FPGA.h	(.../FPGA.h)	(revision 4b22b45e775c0525bc1d76e83e265af91a59785e)
+++ firmware/App/Services/FPGA.h	(.../FPGA.h)	(revision ffb9960f7b97e71ba78844c60158d344c909db94)
@@ -60,7 +60,7 @@
 U16 getFPGADialOutPumpHallSensorCount( void );
 U08 getFPGADialOutPumpHallSensorStatus( void );
 
-U16 getFPGAArterialPressure( void );
+S32 getFPGAArterialPressure( void );
 U16 getFPGAVenousPressure( void );
 U16 getFPGABloodPumpOcclusion( void );
 U16 getFPGADialInPumpOcclusion( void );