Index: Utilities.h
===================================================================
diff -u -r62f81f0f9649926feae18dc09da001690dbcd26e -r4b3e011f99900660c9c9f23d3ea50a07cb61e64b
--- Utilities.h	(.../Utilities.h)	(revision 62f81f0f9649926feae18dc09da001690dbcd26e)
+++ Utilities.h	(.../Utilities.h)	(revision 4b3e011f99900660c9c9f23d3ea50a07cb61e64b)
@@ -1,28 +1,97 @@
-/**************************************************************************
- *
- *  Copyright (c) 2019-2020 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 Utilities.h
- *
- *  @date 23-Oct-2019
- *  @author S. Nash
- *
- *  @brief header file for utilities service module.
- *
- **************************************************************************/
+/**************************************************************************
+*
+* Copyright (c) 2019-2020 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 Utilities.h
+*
+* @author (last) Sean Nash
+* @date (last) 04-Sep-2020
+*
+* @author (original) Sean
+* @date (original) 17-Feb-2020
+*
+***************************************************************************/
 
 #ifndef __UTILITIES_H__
 #define __UTILITIES_H__
 
+/**
+ *  @defgroup Utilities Utilities
+ *  @brief Utilities module contains various utility functions.
+ *
+ *  @addtogroup Utilities
+ *  @{
+ */
+
 // ********** public definitions **********
 
+//                  ******* Time Windowed Count Definitions *********
+#define MAX_TIME_WINDOWED_COUNT         5                   ///< Maximum number of counts that a time windowed count can count to
 
+/// Enumeration of time-windowed counts.
+typedef enum TimeWindowedCounts
+{
+    TIME_WINDOWED_COUNT_BAD_MSG_CRC = 0,                    ///< Bad message CRC
+    TIME_WINDOWED_COUNT_CAN_WARNING,                        ///< CAN warning
+    TIME_WINDOWED_COUNT_CAN_PASSIVE,                        ///< CAN passive mode
+    TIME_WINDOWED_COUNT_CAN_OFF,                            ///< CAN off
+    TIME_WINDOWED_COUNT_CAN_PARITY,                         ///< CAN parity error
+    TIME_WINDOWED_COUNT_FPGA_UART_FRAME_ERROR,              ///< FPGA UART frame error
+    TIME_WINDOWED_COUNT_FPGA_UART_OVERRUN,                  ///< FPGA UART overrun error
+#ifdef _HD_
+#endif
+#ifdef _DG_
+    TIME_WINDOWED_COUNT_FPGA_CONDUCTIVITY_SENSOR_ERROR,     ///< FPGA Conductivity sensor error
+    TIME_WINDOWED_COUNT_FPGA_TEMPERATURE_SENSOR_ERROR,      ///< FPGA Temperature sensor error
+#endif
+    NUM_OF_TIME_WINDOWED_COUNTS                             ///< Number of pressure sensors
+} TIME_WINDOWED_COUNT_T;
+
+//                  ******* Critical Data Definitions *********
+/// Critical data types list.
+typedef enum Critical_Data_Types
+{
+    CRITICAL_DATA_TYPE_U32 = 0,                             ///< Critical data is unsigned 32-bit integer type
+    CRITICAL_DATA_TYPE_S32,                                 ///< Critical data is signed 32-bit integer type
+    CRITICAL_DATA_TYPE_F32,                                 ///< Critical data is 32-bit floating point type
+    NUM_OF_CRITICAL_DATA_TYPES                              ///< Total number of critical data types
+} CRITICAL_DATA_TYPES_T;
+
+/// Record structure for alarm data of any supported type.
+typedef union
+{
+    U32    uInt;                ///< critical data of unsigned integer type
+    S32    sInt;                ///< critical data of signed integer type
+    F32    sFlt;                ///< critical data of floating point type
+} CRITICAL_DATAS_T;
+
+/// critical integer data structure.
+typedef struct
+{
+    CRITICAL_DATA_TYPES_T typ;  ///< Type of data
+    CRITICAL_DATAS_T minimum;   ///< Minimum value for valid data
+    CRITICAL_DATAS_T maximum;   ///< Maximum value for valid data
+    CRITICAL_DATAS_T defValue;  ///< Default value
+    CRITICAL_DATAS_T data;      ///< Data value
+    U32 comp;                   ///< One's compliment of value
+    BOOL set;                   ///< Flag indicates data has been set
+} CRITICAL_DATA_T;
+
 // ********** public function prototypes **********
 
 U16 crc16( const U08 *address, U32 len );
 U08 crc8( const U08 *address, U32 len );
+void initTimeWindowedCount( TIME_WINDOWED_COUNT_T cnt, U32 maxCnt, U32 winMs );
+BOOL incTimeWindowedCount( TIME_WINDOWED_COUNT_T cnt );
+CRITICAL_DATAS_T getCriticalData( CRITICAL_DATA_T *data );
+BOOL setCriticalData( CRITICAL_DATA_T *data, CRITICAL_DATAS_T value );
+BOOL isCriticalDataInRange( CRITICAL_DATA_T *data );
+void resetCriticalData( CRITICAL_DATA_T *data );
+U32 hexStrToDec( U08 const * const valuePtr, U08 size );
 
+/**@}*/
+
 #endif