Index: Utilities.c
===================================================================
diff -u -r5fb988facecb08dceb2bba1c462d3097b53617f0 -rdbe0d08fe950a54ae97d311f92acdd5ad8090da4
--- Utilities.c	(.../Utilities.c)	(revision 5fb988facecb08dceb2bba1c462d3097b53617f0)
+++ Utilities.c	(.../Utilities.c)	(revision dbe0d08fe950a54ae97d311f92acdd5ad8090da4)
@@ -30,6 +30,10 @@
 
 #define INITIAL_CRC16_VAL             0xFFFF                 ///< Seed for 16-bit CRC function.
 #define INITIAL_CRC08_VAL             0x00                   ///< Seed for 8-bit CRC function.
+
+#define MASK_OFF_LOWEST_SIG_NIBBLE    0x000F                 ///< Bit mask to mask off the lowest significant nibble of an unsigned short.
+#define MASK_OFF_MOST_SIG_BIT         0x8000                 ///< Bit mask to mask off the most significant bit of an unsigned short.
+
 #define HEX_LETTER_TO_NUMBER_CONV     0x37                   ///< Hex letter (i.e. A) to number conversion.
 #define STR_TO_HEX_CONV_MAX_BYTES     8                      ///< String to hex conversion maximum allowed bytes.
 
@@ -248,7 +252,7 @@
 
         for ( nBit = SHIFT_8_BITS_FOR_BYTE_SHIFT; nBit > 0; nBit-- )
         {
-            if ( nRem & 0x8000 )
+            if ( nRem & MASK_OFF_MOST_SIG_BIT )
             {
                 nRem = ( nRem << 1 ) ^ 0x3000;
             }
@@ -259,7 +263,7 @@
         }
     }
 
-    nRem = ( 0x000F & ( nRem >> 12 ) );
+    nRem = ( MASK_OFF_LOWEST_SIG_NIBBLE & ( nRem >> 12 ) );
 
     return ( nRem ^ 0x00 );
 }