Index: firmware/App/Controllers/Pressures.c
===================================================================
diff -u -r0dec8744af40d0c87a6d7cd1923920c1c2bd1d2f -rbeb6f17e872c1f31df1095e693b28c2661628cbe
--- firmware/App/Controllers/Pressures.c	(.../Pressures.c)	(revision 0dec8744af40d0c87a6d7cd1923920c1c2bd1d2f)
+++ firmware/App/Controllers/Pressures.c	(.../Pressures.c)	(revision beb6f17e872c1f31df1095e693b28c2661628cbe)
@@ -14,12 +14,12 @@
 * @date (original) 04-Apr-2020
 *
 ***************************************************************************/
-
+#include <math.h>
+
 #include "Pressures.h"
 #include "AlarmMgmt.h"
 #include "FPGA.h"
 #include "InternalADC.h"
-#include "LoadCell.h"  // TODO - test - remove later
 #include "OperationModes.h"
 #include "SystemCommMessages.h"
 #include "TaskPriority.h"
@@ -32,15 +32,18 @@
 
 // ********** private definitions **********
 
-/// Default publication interval for pressure and occlusion data.
 #define PRESSURES_DATA_PUB_INTERVAL         ( MS_PER_SECOND / TASK_PRIORITY_INTERVAL )  ///< interval (ms/task time) at which the pressures data is published on the CAN bus.
 
-#define PUMP_PRESSURE_ZERO                  777          ///< ADC counts equivalent to 0 PSI for pump in/out pressure sensors.
-#define PUMP_PRESSURE_PSIA_PER_COUNT        0.06434      ///< PSIA per ADC count conversion factor for pump in/out pressure sensors.
-#define PUMP_PRESSURE_PSIA_TO_PSI_OFFSET    14.7         ///< Subtract this offset to convert PSIA to PSI.
+#define PUMP_PRESSURE_ZERO                  777                                         ///< ADC counts equivalent to 0 PSI for pump in/out pressure sensors.
+#define PUMP_PRESSURE_PSIA_PER_COUNT        0.06434                                     ///< PSIA per ADC count conversion factor for pump in/out pressure sensors.
+#define PUMP_PRESSURE_PSIA_TO_PSI_OFFSET    14.7                                        ///< Subtract this offset to convert PSIA to PSI.
 
 #define PRESSURE_SAMPLES_TO_AVERAGE         (200 / TASK_PRIORITY_INTERVAL)              ///< Averaging pressure data over the reporting interval.
 #define PRESSURE_AVERAGE_MULTIPLIER         (1.0 / (F32)PRESSURE_SAMPLES_TO_AVERAGE)    ///< Optimization - multiplying is faster than dividing.
+
+#define PRESSURE_SENSORS_ADC_BITS           12U                                         ///< Pressure sensors ADC bits
+#define PRESSURE_SENSORS_ADC_MAX_COUNT      ( pow(2, PRESSURE_SENSORS_ADC_BITS) )       ///< Pressure sensors max ADC count
+
 
 /// Defined states for the pressures monitor state machine.
 typedef enum PresOccl_States
@@ -61,17 +64,17 @@
 
 // ********** private data **********
 
-static PRESSURE_STATE_T pressuresState = PRESSURE_INIT_STATE;                   ///< current state of pressure monitor state machine.
+static PRESSURE_STATE_T pressuresState;                                         ///< current state of pressure monitor state machine.
 static U32 pressuresDataPublicationTimerCounter = 0;                            ///< used to schedule pressure data publication to CAN bus.
-
-static OVERRIDE_U32_T pressuresDataPublishInterval = { PRESSURES_DATA_PUB_INTERVAL, PRESSURES_DATA_PUB_INTERVAL, 0, 0 }; ///< interval (in ms/task interval) at which to publish pressures data to CAN bus.
+
+/// interval (in ms/task interval) at which to publish pressures data to CAN bus.
+static OVERRIDE_U32_T pressuresDataPublishInterval = { PRESSURES_DATA_PUB_INTERVAL, PRESSURES_DATA_PUB_INTERVAL, 0, 0 };
 static OVERRIDE_F32_T pressures[ NUM_OF_PRESSURE_SENSORS ];                     ///< Measured pressure from sensors.
 
 static S32 measuredPressureReadingsSum[ NUM_OF_PRESSURE_SENSORS ];              ///< Raw pressure sensor sums for averaging.
 static U32 pressureFilterCounter = 0;                                           ///< used to schedule pressure sensor filtering.
 
-static PRESSURE_SELF_TEST_STATE_T pressuresSelfTestState = PRESSURE_SELF_TEST_STATE_START;  ///< current pressure self test state.
-static U32 pressuresSelfTestTimerCount = 0;                                     ///< timer counter for pressure self test.
+static PRESSURE_SELF_TEST_STATE_T pressuresSelfTestState;                       ///< current pressure self test state.
 
 // ********** private function prototypes **********
 
@@ -80,6 +83,8 @@
 static void checkPressures( void );
 static void publishPressuresData( void );
 static DATA_GET_PROTOTYPE( U32, getPublishPressuresDataInterval );
+
+static SELF_TEST_STATUS_T handleSelfTestADCCheck( void );
 
 /*********************************************************************//**
  * @brief
@@ -106,8 +111,7 @@
     pressuresState = PRESSURE_INIT_STATE;
     pressuresSelfTestState = PRESSURE_SELF_TEST_STATE_START;
     pressuresDataPublicationTimerCounter = 0;
-    pressuresSelfTestTimerCount = 0;
-}
+}
 
 /*********************************************************************//**
  * @brief
@@ -317,22 +321,65 @@
 
 /*********************************************************************//**
  * @brief
- * The execPressuresTest function executes the state machine for the \n
+ * The execPressureSelfTest function executes the state machine for the \n
  * Pressures self test.
  * @details
- * Inputs : none
- * Outputs : none
- * @return the current state of the Pressures self test.
+ * Inputs : pressuresSelfTestState
+ * Outputs : pressuresSelfTestState
+ * @return PressuresSelfTestResult (SELF_TEST_STATUS_T)
  *************************************************************************/
-SELF_TEST_STATUS_T execPressuresTest( void )
-{
-    SELF_TEST_STATUS_T result = SELF_TEST_STATUS_FAILED;
+SELF_TEST_STATUS_T execPressureSelfTest( void )
+{
+    switch ( pressuresSelfTestState )
+    {
+        case PRESSURE_SELF_TEST_STATE_START:
+            pressuresSelfTestState = PRESSURE_TEST_STATE_IN_PROGRESS;
+            pressuresSelfTestResult = SELF_TEST_STATUS_IN_PROGRESS;
+            break;
+
+        case PRESSURE_TEST_STATE_IN_PROGRESS:
+            pressuresSelfTestResult = handleSelfTestADCCheck();
+            pressuresSelfTestState = PRESSURE_TEST_STATE_COMPLETE;
+            break;
+
+        case PRESSURE_TEST_STATE_COMPLETE:
+            // Done with self test
+            break;
+
+        default:
+            SET_ALARM_WITH_2_U32_DATA ( ALARM_ID_DG_SOFTWARE_FAULT, SW_FAULT_ID_TEMPERATURE_SENSORS_INVALID_SELF_TEST_STATE,
+                                        pressuresSelfTestState );
+            break;
+    }
+
+    return pressuresSelfTestResult;
+}
+
+/*************************************************************************
+ * @brief
+ * The handleSelfTestADCCheck function checks whether the ADC reads and
+ * report status back. If the reads are above the maximum 12bit ADC count
+ * or below 0, it will throw an alarm.
+ * @details
+ * Inputs : none
+ * Outputs : none
+ * @param none
+ * @return result (SELF_TEST_STATUS_T)
+ *************************************************************************/
+static SELF_TEST_STATUS_T handleSelfTestADCCheck( void )
+{
+    SELF_TEST_STATUS_T result = SELF_TEST_STATUS_PASSED;
+    U16 const inletPressureADCReading = getIntADCReading( INT_ADC_RO_PUMP_INLET_PRESSURE );
+
+    if ( ( inletPressureADCReading <= 0 ) || ( inletPressureADCReading >= PRESSURE_SENSORS_ADC_MAX_COUNT ) )
+    {
+        result = SELF_TEST_STATUS_FAILED;
+        SET_ALARM_WITH_1_U32_DATA ( ALARM_ID_PRESSURE_SENSOR_FAULT, inletPressureADCReading );
+    }
+
+    return result;
+}
 
-    // TODO - implement self test(s)
-
-    return result;
-}
-
 /**@}*/