Index: firmware/App/Common.h
===================================================================
diff -u -ra635fc9674913460c74831add7886c85d8aaf8f1 -r53165945d15dd7a30b3d194573507cbd31e5314f
--- firmware/App/Common.h	(.../Common.h)	(revision a635fc9674913460c74831add7886c85d8aaf8f1)
+++ firmware/App/Common.h	(.../Common.h)	(revision 53165945d15dd7a30b3d194573507cbd31e5314f)
@@ -84,7 +84,13 @@
 #define MASK_OFF_LSW                    0xFFFF0000
 #define SHIFT_8_BITS_FOR_BYTE_SHIFT     8
 #define SHIFT_16_BITS_FOR_WORD_SHIFT    16
+#define MASK_OFF_NIBBLE_LSB             0xF0
+#define MASK_OFF_NIBBLE_MSB             0x0F
+#define MAX_DOUBLE_DIGIT_DECIMAL        99U
+#define MAX_SINGLE_DIGIT_DECIMAL        9U
+#define SHIFT_BITS_BY_4                 4U
 
+
 // **** Common Macros ****
 
 #define CAP(v,u)                        ((v) > (u) ? (u) : (v))